[{"file_date_updated":"2026-01-05T13:21:20Z","_id":"20456","date_created":"2025-10-12T22:01:26Z","page":"24-47","publication_identifier":{"issn":["0179-5376"],"eissn":["1432-0444"]},"publisher":"Springer Nature","file":[{"success":1,"checksum":"0addb5c1b78142f9fb453bfa04695400","file_id":"20952","access_level":"open_access","creator":"dernst","relation":"main_file","content_type":"application/pdf","date_created":"2026-01-05T13:21:20Z","date_updated":"2026-01-05T13:21:20Z","file_name":"2026_DiscreteCompGeom_Biswas.pdf","file_size":570922}],"scopus_import":"1","title":"On the size of chromatic Delaunay mosaics","quality_controlled":"1","article_type":"original","author":[{"orcid":"0000-0002-5372-7890","first_name":"Ranita","full_name":"Biswas, Ranita","id":"3C2B033E-F248-11E8-B48F-1D18A9856A87","last_name":"Biswas"},{"last_name":"Cultrera di Montesano","full_name":"Cultrera di Montesano, Sebastiano","id":"34D2A09C-F248-11E8-B48F-1D18A9856A87","first_name":"Sebastiano","orcid":"0000-0001-6249-0832"},{"orcid":"0000-0003-0464-3823","first_name":"Ondrej","id":"2B23F01E-F248-11E8-B48F-1D18A9856A87","full_name":"Draganov, Ondrej","last_name":"Draganov"},{"first_name":"Herbert","orcid":"0000-0002-9823-6833","last_name":"Edelsbrunner","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","full_name":"Edelsbrunner, Herbert"},{"last_name":"Saghafian","id":"f86f7148-b140-11ec-9577-95435b8df824","full_name":"Saghafian, Morteza","first_name":"Morteza"}],"volume":75,"publication":"Discrete and Computational Geometry","PlanS_conform":"1","acknowledgement":"The fourth author thanks Boris Aronov for insightful discussions on the size of the overlay of Voronoi tessellations. Open access funding provided by Institute of Science and Technology (IST Austria). This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme, grant no. 788183, from the Wittgenstein Prize, Austrian Science Fund (FWF), grant no. Z 342-N31, and from the DFG Collaborative Research Center TRR 109, ‘Discretization in Geometry and Dynamics’, Austrian Science Fund (FWF), grant no. I 02979-N35.","day":"01","arxiv":1,"year":"2026","OA_place":"publisher","corr_author":"1","language":[{"iso":"eng"}],"oa":1,"intvolume":" 75","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","image":"/images/cc_by.png"},"date_published":"2026-01-01T00:00:00Z","citation":{"mla":"Biswas, Ranita, et al. “On the Size of Chromatic Delaunay Mosaics.” Discrete and Computational Geometry, vol. 75, Springer Nature, 2026, pp. 24–47, doi:10.1007/s00454-025-00778-7.","apa":"Biswas, R., Cultrera di Montesano, S., Draganov, O., Edelsbrunner, H., & Saghafian, M. (2026). On the size of chromatic Delaunay mosaics. Discrete and Computational Geometry. Springer Nature. https://doi.org/10.1007/s00454-025-00778-7","short":"R. Biswas, S. Cultrera di Montesano, O. Draganov, H. Edelsbrunner, M. Saghafian, Discrete and Computational Geometry 75 (2026) 24–47.","ieee":"R. Biswas, S. Cultrera di Montesano, O. Draganov, H. Edelsbrunner, and M. Saghafian, “On the size of chromatic Delaunay mosaics,” Discrete and Computational Geometry, vol. 75. Springer Nature, pp. 24–47, 2026.","ista":"Biswas R, Cultrera di Montesano S, Draganov O, Edelsbrunner H, Saghafian M. 2026. On the size of chromatic Delaunay mosaics. Discrete and Computational Geometry. 75, 24–47.","ama":"Biswas R, Cultrera di Montesano S, Draganov O, Edelsbrunner H, Saghafian M. On the size of chromatic Delaunay mosaics. Discrete and Computational Geometry. 2026;75:24-47. doi:10.1007/s00454-025-00778-7","chicago":"Biswas, Ranita, Sebastiano Cultrera di Montesano, Ondrej Draganov, Herbert Edelsbrunner, and Morteza Saghafian. “On the Size of Chromatic Delaunay Mosaics.” Discrete and Computational Geometry. Springer Nature, 2026. https://doi.org/10.1007/s00454-025-00778-7."},"ddc":["510"],"status":"public","project":[{"_id":"266A2E9E-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","grant_number":"788183","name":"Alpha Shape Theory Extended"},{"call_identifier":"FWF","_id":"268116B8-B435-11E9-9278-68D0E5697425","name":"Mathematics, Computer Science","grant_number":"Z00342"},{"call_identifier":"FWF","_id":"2561EBF4-B435-11E9-9278-68D0E5697425","grant_number":"I02979-N35","name":"Persistence and stability of geometric complexes"}],"doi":"10.1007/s00454-025-00778-7","isi":1,"OA_type":"hybrid","month":"01","abstract":[{"lang":"eng","text":"Given a locally finite set A⊆Rd and a coloring χ:A→{0,1,…,s}, we introduce the chromatic Delaunay mosaic of χ, which is a Delaunay mosaic in Rs+d that represents how points of different colors mingle. Our main results are bounds on the size of the chromatic Delaunay mosaic, in which we assume that d and s are constants. For example, if A is finite with n=#A, and the coloring is random, then the chromatic Delaunay mosaic has O(n⌈d/2⌉) cells in expectation. In contrast, for Delone sets and Poisson point processes in Rd, the expected number of cells within a closed ball is only a constant times the number of points in this ball. Furthermore, in R2 all colorings of a dense set of n points have chromatic Delaunay mosaics of size O(n). This encourages the use of chromatic Delaunay mosaics in applications."}],"related_material":{"record":[{"relation":"earlier_version","status":"public","id":"15090"}]},"oa_version":"Published Version","external_id":{"arxiv":["2212.03121"],"isi":["001584166900001"]},"type":"journal_article","ec_funded":1,"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publication_status":"published","fulldoi":"https://doi.org/10.1007/s00454-025-00778-7","date_updated":"2026-01-05T13:21:56Z","article_processing_charge":"Yes (via OA deal)","has_accepted_license":"1","department":[{"_id":"HeEd"}]},{"oa":1,"intvolume":" 131","year":"2026","language":[{"iso":"eng"}],"OA_place":"publisher","corr_author":"1","PlanS_conform":"1","arxiv":1,"day":"01","acknowledgement":"The authors would like to thank Gilles Zémor for a helpful clarification on [3], Deepak Bal and Patrick Bennett for bringing [25] to their attention, and both referees for several helpful comments.\r\nS.B.: Most of this research was conducted while the author was at the School of Mathematics, University of Birmingham, Birmingham, United Kingdom. The research leading to these results was supported by EPSRC, United Kingdom, grant no. EP/V048287/1 and by ERC Advanced Grants “GeoScape”, no. 882971 and “ERMiD”, no. 101054936. There are no additional data beyond that contained within the main manuscript.\r\nS.D.: Research supported by Taiwan NSTC grants 111-2115-M-002-009-MY2 and 113-2628-M-002-008-MY4.\r\nK.P.: This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 101034413. Parts of this research was conducted while K.P. was at the Department of Computer Science, ETH Zürich, Switzerland, supported by Swiss National Science Foundation, Switzerland , grant no. CRSII5 173721.","volume":131,"publication":"European Journal of Combinatorics","quality_controlled":"1","title":"Odd-Ramsey numbers of complete bipartite graphs","article_type":"original","author":[{"first_name":"Simona","full_name":"Boyadzhiyska, Simona","last_name":"Boyadzhiyska"},{"last_name":"Das","full_name":"Das, Shagnik","first_name":"Shagnik"},{"first_name":"Thomas","last_name":"Lesgourgues","full_name":"Lesgourgues, Thomas"},{"last_name":"Petrova","full_name":"Petrova, Kalina H","id":"554ff4e4-f325-11ee-b0c4-a10dbd523381","first_name":"Kalina H"}],"publisher":"Elsevier","publication_identifier":{"issn":["0195-6698"]},"scopus_import":"1","file":[{"file_size":563029,"content_type":"application/pdf","file_name":"2026_EuropJourCombinatorics_Boyadzhiyska.pdf","date_created":"2026-01-05T13:34:40Z","date_updated":"2026-01-05T13:34:40Z","success":1,"checksum":"52883daa217398396cbf9b8ad9ddae92","creator":"dernst","relation":"main_file","file_id":"20954","access_level":"open_access"}],"date_created":"2025-10-16T13:14:34Z","_id":"20482","file_date_updated":"2026-01-05T13:34:40Z","has_accepted_license":"1","article_processing_charge":"Yes (via OA deal)","department":[{"_id":"MaKw"}],"article_number":"104235","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","ec_funded":1,"fulldoi":"https://doi.org/10.1016/j.ejc.2025.104235","date_updated":"2026-01-05T13:34:48Z","publication_status":"published","oa_version":"Published Version","type":"journal_article","external_id":{"isi":["001573380700001"],"arxiv":["2410.05887"]},"month":"01","abstract":[{"text":"In his study of graph codes, Alon introduced the concept of the odd-Ramsey number of a family of graphs H in Kn, defined as the minimum number of colours needed to colour the edges of K so that every copy of a graph H E H intersects some colour class in an odd number of edges. In this paper, we focus on complete bipartite graphs. First, we completely resolve the problem when H is the family of all spanning complete bipartite graphs on n vertices. We then focus on its subfamilies, that is, {Kt,n-t : t E T} for a fixed set of integers T c [[n/2]]. We prove that the odd-Ramsey problem is equivalent to determining the maximum dimension of a linear binary code avoiding codewords of given weights, and leverage known results from coding theory to deduce asymptotically tight bounds in our setting. We conclude with bounds for the odd-Ramsey numbers of fixed (that is, non-spanning) complete bipartite subgraphs.","lang":"eng"}],"project":[{"name":"IST-BRIDGE: International postdoctoral program","grant_number":"101034413","call_identifier":"H2020","_id":"fc2ed2f7-9c52-11eb-aca3-c01059dda49c"}],"status":"public","OA_type":"hybrid","isi":1,"doi":"10.1016/j.ejc.2025.104235","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","image":"/images/cc_by.png"},"date_published":"2026-01-01T00:00:00Z","ddc":["500"],"citation":{"apa":"Boyadzhiyska, S., Das, S., Lesgourgues, T., & Petrova, K. H. (2026). Odd-Ramsey numbers of complete bipartite graphs. European Journal of Combinatorics. Elsevier. https://doi.org/10.1016/j.ejc.2025.104235","mla":"Boyadzhiyska, Simona, et al. “Odd-Ramsey Numbers of Complete Bipartite Graphs.” European Journal of Combinatorics, vol. 131, 104235, Elsevier, 2026, doi:10.1016/j.ejc.2025.104235.","short":"S. Boyadzhiyska, S. Das, T. Lesgourgues, K.H. Petrova, European Journal of Combinatorics 131 (2026).","ieee":"S. Boyadzhiyska, S. Das, T. Lesgourgues, and K. H. Petrova, “Odd-Ramsey numbers of complete bipartite graphs,” European Journal of Combinatorics, vol. 131. Elsevier, 2026.","chicago":"Boyadzhiyska, Simona, Shagnik Das, Thomas Lesgourgues, and Kalina H Petrova. “Odd-Ramsey Numbers of Complete Bipartite Graphs.” European Journal of Combinatorics. Elsevier, 2026. https://doi.org/10.1016/j.ejc.2025.104235.","ista":"Boyadzhiyska S, Das S, Lesgourgues T, Petrova KH. 2026. Odd-Ramsey numbers of complete bipartite graphs. European Journal of Combinatorics. 131, 104235.","ama":"Boyadzhiyska S, Das S, Lesgourgues T, Petrova KH. Odd-Ramsey numbers of complete bipartite graphs. European Journal of Combinatorics. 2026;131. doi:10.1016/j.ejc.2025.104235"}},{"author":[{"id":"708cad98-e86a-11ef-8098-bdae2d7c6af1","full_name":"Cano Cordoba, Filip","last_name":"Cano Cordoba","orcid":"0000-0002-0783-904X","first_name":"Filip"}],"quality_controlled":"1","title":"Explaining decisions one conversation at a time: Opportunities and risks of LLMs as explainability assistants","scopus_import":"1","publisher":"Science and Technology Publications","publication_identifier":{"isbn":["9789897587962"],"issn":["2184-3589"],"eissn":["2184-433X"]},"supplementarymaterial":"no","_id":"22103","date_created":"2026-06-21T22:03:00Z","page":"4689-4696","intvolume":" 5","oa":1,"conference":{"location":"Marbella, Spain","name":"ICAART: International Conference on Agents and Artificial Intelligence","start_date":"2026-03-05","end_date":"2026-03-08"},"language":[{"iso":"eng"}],"corr_author":"1","OA_place":"repository","year":"2026","day":"01","acknowledgement":"This work has been supported by the European Research Council under Grant No.: ERC-2020-AdG\r\n101020093. LLM–based tools have been used as\r\nwriting assistance to help improve presentation.\r\n","publication":"Proceedings of the 18th International Conference on Agents and Artificial Intelligence","volume":5,"type":"conference","oa_version":"Accepted Version","das_tickbox":"0","abstract":[{"text":"Modern AI systems increasingly rely on opaque, highly complex models whose inner workings remain inaccessible even to experts. This opacity creates challenges for trust, accountability, and compliance with\r\nemerging regulatory expectations such as the “right to an explanation”. While traditional explainability methods—feature attributions, counterfactuals, surrogate models—and interpretable model classes provide valuable insights for engineers, they often fall short of delivering the contextual, conversational explanations that\r\nreal users expect. Large Language Models (LLMs) offer a promising new avenue for explanation due to their\r\nability to engage interactively, adapt to user needs, and translate technical outputs into more accessible reasoning. However, their tendencies toward hallucination, conflict avoidance, and oversimplification introduce\r\nserious risks when used as explanatory agents. This paper analyzes these opportunities and limitations, examines verification strategies for ensuring explanation fidelity, and situates LLM-generated explanations within\r\nbroader concerns about public trust. The paper concludes by outlining best practices and future research directions for building robust, verifiable, and human-aligned explanation systems.","lang":"eng"}],"month":"04","doi":"10.5220/0014483200004052","OA_type":"green","main_file_link":[{"url":"https://filipcano.org/files/icaart26llm.pdf","open_access":"1"}],"status":"public","project":[{"_id":"62781420-2b32-11ec-9570-8d9b63373d4d","call_identifier":"H2020","grant_number":"101020093","name":"Vigilant Algorithmic Monitoring of Software"}],"citation":{"ieee":"F. Cano Cordoba, “Explaining decisions one conversation at a time: Opportunities and risks of LLMs as explainability assistants,” in Proceedings of the 18th International Conference on Agents and Artificial Intelligence, Marbella, Spain, 2026, vol. 5, pp. 4689–4696.","short":"F. Cano Cordoba, in:, Proceedings of the 18th International Conference on Agents and Artificial Intelligence, Science and Technology Publications, 2026, pp. 4689–4696.","ista":"Cano Cordoba F. 2026. Explaining decisions one conversation at a time: Opportunities and risks of LLMs as explainability assistants. Proceedings of the 18th International Conference on Agents and Artificial Intelligence. ICAART: International Conference on Agents and Artificial Intelligence vol. 5, 4689–4696.","ama":"Cano Cordoba F. Explaining decisions one conversation at a time: Opportunities and risks of LLMs as explainability assistants. In: Proceedings of the 18th International Conference on Agents and Artificial Intelligence. Vol 5. Science and Technology Publications; 2026:4689-4696. doi:10.5220/0014483200004052","chicago":"Cano Cordoba, Filip. “Explaining Decisions One Conversation at a Time: Opportunities and Risks of LLMs as Explainability Assistants.” In Proceedings of the 18th International Conference on Agents and Artificial Intelligence, 5:4689–96. Science and Technology Publications, 2026. https://doi.org/10.5220/0014483200004052.","apa":"Cano Cordoba, F. (2026). Explaining decisions one conversation at a time: Opportunities and risks of LLMs as explainability assistants. In Proceedings of the 18th International Conference on Agents and Artificial Intelligence (Vol. 5, pp. 4689–4696). Marbella, Spain: Science and Technology Publications. https://doi.org/10.5220/0014483200004052","mla":"Cano Cordoba, Filip. “Explaining Decisions One Conversation at a Time: Opportunities and Risks of LLMs as Explainability Assistants.” Proceedings of the 18th International Conference on Agents and Artificial Intelligence, vol. 5, Science and Technology Publications, 2026, pp. 4689–96, doi:10.5220/0014483200004052."},"date_published":"2026-04-01T00:00:00Z","department":[{"_id":"ToHe"}],"article_processing_charge":"No","keyword":["Explainable AI","Large Language Models","Trust in AI"],"fulldoi":"https://doi.org/10.5220/0014483200004052","date_updated":"2026-06-24T08:37:00Z","publication_status":"published","researchdata_availability":"no","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","ec_funded":1},{"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","researchdata_availability":"yes","publication_status":"published","issue":"22","date_updated":"2026-06-24T09:49:27Z","fulldoi":"https://doi.org/10.1103/b48p-kw5l","article_processing_charge":"No","article_number":"224401","status":"public","OA_type":"closed access","dataavailabilitystatement":"The data that support the findings of this article are openly\r\navailable [27 - https://doi.org/10.7910/dvn/rqp3az], embargo periods may apply.","doi":"10.1103/b48p-kw5l","date_published":"2026-06-01T00:00:00Z","citation":{"ista":"Liebman-Peláez A, Garratt SJ, Sunko V, Sun Y, Soh JR, Prabhakaran D, Boothroyd AT, Orenstein J. 2026. Observation of a Goldstone mode in the broken helix by time-resolved optical polarimetry. Physical Review B. 113(22), 224401.","ama":"Liebman-Peláez A, Garratt SJ, Sunko V, et al. Observation of a Goldstone mode in the broken helix by time-resolved optical polarimetry. Physical Review B. 2026;113(22). doi:10.1103/b48p-kw5l","chicago":"Liebman-Peláez, A., S. J. Garratt, Veronika Sunko, Y. Sun, J. R. Soh, D. Prabhakaran, A. T. Boothroyd, and J. Orenstein. “Observation of a Goldstone Mode in the Broken Helix by Time-Resolved Optical Polarimetry.” Physical Review B. American Physical Society, 2026. https://doi.org/10.1103/b48p-kw5l.","ieee":"A. Liebman-Peláez et al., “Observation of a Goldstone mode in the broken helix by time-resolved optical polarimetry,” Physical Review B, vol. 113, no. 22. American Physical Society, 2026.","short":"A. Liebman-Peláez, S.J. Garratt, V. Sunko, Y. Sun, J.R. Soh, D. Prabhakaran, A.T. Boothroyd, J. Orenstein, Physical Review B 113 (2026).","apa":"Liebman-Peláez, A., Garratt, S. J., Sunko, V., Sun, Y., Soh, J. R., Prabhakaran, D., … Orenstein, J. (2026). Observation of a Goldstone mode in the broken helix by time-resolved optical polarimetry. Physical Review B. American Physical Society. https://doi.org/10.1103/b48p-kw5l","mla":"Liebman-Peláez, A., et al. “Observation of a Goldstone Mode in the Broken Helix by Time-Resolved Optical Polarimetry.” Physical Review B, vol. 113, no. 22, 224401, American Physical Society, 2026, doi:10.1103/b48p-kw5l."},"das_tickbox":"1","oa_version":"None","type":"journal_article","month":"06","abstract":[{"lang":"eng","text":"Magnets with isotropic easy-plane symmetry host Goldstone modes that can be leveraged for efficient\r\nspin transport. Here, we present a time-resolved optical polarimetry technique that allows us to detect and\r\ncharacterize such low-frequency modes, and use it to observe the Goldstone mode in the multi-Q broken helix\r\nphase of EuIn2As2. The strength of our technique comes from the ability to distinguish between nematic and\r\nmagnetization dynamics in order to yield information about the mode structure, in addition to its frequency. We\r\nfind that the nearly uniform spin precession characteristic of a Goldstone mode is realized only when a small\r\nmagnetic field is used to unpin the broken helix from local strain generated during crystal growth. In this regime,\r\nthe mode frequency scales linearly with the applied field due to the ground state C2z symmetry of the broken\r\nhelix. Our work shows how optical polarimetry can be used to study the Goldstone modes of complex magnets."}],"acknowledgement":"We would like to thank Ehud Altman for helpful discussions. This research was primarily funded by the Quantum\r\nMaterials (KC2202) program under the U.S. Department of\r\nEnergy, Office of Science, Office of Basic Energy Sciences,\r\nMaterials Sciences and Engineering Division under Contract\r\nNo. DE-AC02-05CH11231, which supported the experimental and theoretical work at the Lawrence Berkeley National\r\nLaboratory and UC Berkeley. D.P. and A.T.B. would like to\r\nacknowledge the Engineering and Physical Sciences Research\r\nCouncil, UK and the Oxford- ShanghaiTech collaboration\r\nproject for financial support. J.O. received support from\r\nthe Gordon and Betty Moore Foundation’s EPiQS Initiative\r\nthrough Grant No. GBMF4537 to J.O. at UC Berkeley. V.S.\r\nis supported by the Miller Institute for Basic Research in\r\nScience, UC Berkeley. S.J.G. was supported by the Gordon\r\nand Betty Moore Foundation.","day":"01","publication":"Physical Review B","volume":113,"intvolume":" 113","year":"2026","language":[{"iso":"eng"}],"supplementarymaterial":"no","extern":"1","date_created":"2026-06-22T08:52:01Z","_id":"22116","title":"Observation of a Goldstone mode in the broken helix by time-resolved optical polarimetry","quality_controlled":"1","article_type":"original","author":[{"last_name":"Liebman-Peláez","full_name":"Liebman-Peláez, A.","first_name":"A."},{"first_name":"S. J.","last_name":"Garratt","full_name":"Garratt, S. J."},{"first_name":"Veronika","orcid":"0000-0003-2724-3523","full_name":"Sunko, Veronika","last_name":"Sunko","id":"23cb1cf6-2c7a-11ef-91a4-f72fc19f20b3"},{"full_name":"Sun, Y.","last_name":"Sun","first_name":"Y."},{"last_name":"Soh","full_name":"Soh, J. R.","first_name":"J. R."},{"first_name":"D.","full_name":"Prabhakaran, D.","last_name":"Prabhakaran"},{"full_name":"Boothroyd, A. T.","last_name":"Boothroyd","first_name":"A. T."},{"full_name":"Orenstein, J.","last_name":"Orenstein","first_name":"J."}],"publication_identifier":{"eissn":["2469-9969"],"issn":["2469-9950"]},"publisher":"American Physical Society"},{"department":[{"_id":"VeSu"}],"has_accepted_license":"1","article_processing_charge":"Yes","license":"https://creativecommons.org/licenses/by-nc-nd/4.0/","fulldoi":"https://doi.org/10.1038/s41535-026-00901-8","date_updated":"2026-06-24T10:31:05Z","publication_status":"epub_ahead","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","type":"journal_article","external_id":{"arxiv":["2511.16421"]},"oa_version":"Published Version","abstract":[{"text":"Altermagnets are a class of collinear magnets that exhibit non-relativistic spin splitting (NRSS) of electronic bands in the absence of net magnetization. Their potential to generate large spin polarization without spin-orbit coupling has created strong interest in probes that access the underlying order parameter directly. In this Perspective, we show that linear magneto-birefringence (LMB) provides a natural and broadly applicable route to detecting altermagnetic order. Building on the correspondence between the momentum-space structure of NRSS and the ferroic ordering of magnetic multipoles in real space, we demonstrate how $d$-wave and $g$-wave NRSS textures yield distinct LMB responses. We present a symmetry-based framework that identifies the optical geometries and field configurations required to isolate specific multipole components, enabling domain imaging and providing benchmarks for theoretical models of LMB.","lang":"eng"}],"month":"05","OA_type":"gold","doi":"10.1038/s41535-026-00901-8","main_file_link":[{"open_access":"1","url":"https://doi.org/10.1038/s41535-026-00901-8"}],"status":"public","citation":{"apa":"Sunko, V., & Orenstein, J. (2026). Linear magneto-birefringence as a probe of altermagnetism. Npj Quantum Materials. Springer Nature. https://doi.org/10.1038/s41535-026-00901-8","mla":"Sunko, Veronika, and J. Orenstein. “Linear Magneto-Birefringence as a Probe of Altermagnetism.” Npj Quantum Materials, Springer Nature, 2026, doi:10.1038/s41535-026-00901-8.","short":"V. Sunko, J. Orenstein, Npj Quantum Materials (2026).","ieee":"V. Sunko and J. Orenstein, “Linear magneto-birefringence as a probe of altermagnetism,” npj Quantum Materials. Springer Nature, 2026.","ista":"Sunko V, Orenstein J. 2026. Linear magneto-birefringence as a probe of altermagnetism. npj Quantum Materials.","chicago":"Sunko, Veronika, and J. Orenstein. “Linear Magneto-Birefringence as a Probe of Altermagnetism.” Npj Quantum Materials. Springer Nature, 2026. https://doi.org/10.1038/s41535-026-00901-8.","ama":"Sunko V, Orenstein J. Linear magneto-birefringence as a probe of altermagnetism. npj Quantum Materials. 2026. doi:10.1038/s41535-026-00901-8"},"ddc":["530"],"tmp":{"name":"Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)","legal_code_url":"https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode","short":"CC BY-NC-ND (4.0)","image":"/images/cc_by_nc_nd.png"},"date_published":"2026-05-30T00:00:00Z","oa":1,"language":[{"iso":"eng"}],"OA_place":"publisher","corr_author":"1","year":"2026","arxiv":1,"day":"30","acknowledgement":"We thank Nicola Spaldin and Marc Vila for valuable discussions. J.O. received support from the Quantum Materials (KC2202) program under the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division under Contract No. DE-AC02-05CH11231, and the Gordon and Betty Moore Foundation's EPiQS Initiative through Grant GBMF4537 to J.O. at UC Berkeley.","publication":"npj Quantum Materials","author":[{"last_name":"Sunko","full_name":"Sunko, Veronika","id":"23cb1cf6-2c7a-11ef-91a4-f72fc19f20b3","first_name":"Veronika","orcid":"0000-0003-2724-3523"},{"last_name":"Orenstein","full_name":"Orenstein, J.","first_name":"J."}],"article_type":"original","title":"Linear magneto-birefringence as a probe of altermagnetism","publisher":"Springer Nature","publication_identifier":{"eissn":["2397-4648"]},"date_created":"2026-03-11T10:40:08Z","_id":"21437"},{"intvolume":" 20","oa":1,"OA_place":"publisher","language":[{"iso":"eng"}],"year":"2026","acknowledgement":"A.G. and K.P.S. acknowledge the DFG through CRC 1238 (277146847, A01) and DFG project SE 2575. K.P.S., P.S., and A.G. would like to thank the Center for Micro- and Nanostructures (ZMNS) for providing the cleanroom facilities. K.P.S. thanks Daniele Nazari for help with ALD of Al2O3 films. Financial support from FFG Austria (CrystalGate) is acknowledged. A.G. thanks John Weaver for discussions about the structure of RbxC60. B.C. acknowledges support from the NOMIS Foundation. First-principles simulations were supported as part of user project CNMS2025-R-03182 at the Center for Nanophase Materials Sciences (CNMS), which is a US Department of Energy, Office of Science User Facility at Oak Ridge National Laboratory. J.J. and J.H. acknowledge the computational resources provided by the ACCESS (Advanced Cyberinfrastructure Coordination Ecosystem: Services & Support) program through allocation TG-DMR110037; the National Energy Research Scientific Computing Center (NERSC), a DOE Office of Science User Facility supported under Contract No. DE-AC02-05CH11231, through NERSC award BES-ERCAP0031261; and the Compute and Data Environment for Science (CADES) Baseline at Oak Ridge National Laboratory, supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC05-00OR22725. The authors acknowledge TU Wien Bibliothek for financial support through its Open access funding provided by Technische Universitat Wien.","day":"23","PlanS_conform":"1","publication":"ACS Nano","volume":20,"article_type":"original","author":[{"last_name":"Shchukin","full_name":"Shchukin, Konstantin P.","first_name":"Konstantin P."},{"first_name":"Oliver N.","last_name":"Gallego Lacey","full_name":"Gallego Lacey, Oliver N."},{"full_name":"Coquinot, Baptiste","last_name":"Coquinot","id":"f8417bd4-f599-11ee-a482-b927e3ed1e8e","orcid":"0000-0001-5524-596X","first_name":"Baptiste"},{"full_name":"Jakowski, Jacek","last_name":"Jakowski","first_name":"Jacek"},{"full_name":"Huang, Jingsong","last_name":"Huang","first_name":"Jingsong"},{"first_name":"Patrik","full_name":"Staudenmayer, Patrik","last_name":"Staudenmayer"},{"first_name":"Yannic","last_name":"Falke","full_name":"Falke, Yannic"},{"last_name":"Pandeya","full_name":"Pandeya, Ram Prakash","first_name":"Ram Prakash"},{"last_name":"Grüneis","full_name":"Grüneis, Alexander","first_name":"Alexander"}],"title":"On-chip tuning of superconductivity in fullerides via current-driven Rb+ intercalation","quality_controlled":"1","file":[{"date_updated":"2026-06-29T08:58:12Z","file_name":"2026_ACSNano_Shchukin.pdf","date_created":"2026-06-29T08:58:12Z","content_type":"application/pdf","file_size":6290296,"access_level":"open_access","file_id":"22150","relation":"main_file","creator":"dernst","checksum":"01ec8ee6fab7bf563df7af13f6b43045","success":1}],"scopus_import":"1","publication_identifier":{"issn":["1936-0851"],"eissn":["1936-086X"]},"publisher":"American Chemical Society","supplementarymaterial":"yes","file_date_updated":"2026-06-29T08:58:12Z","date_created":"2026-06-28T22:01:34Z","_id":"22145","page":"17360-17372","department":[{"_id":"MiLe"}],"article_processing_charge":"Yes (via OA deal)","has_accepted_license":"1","pmid":1,"keyword":["fulleride","intercalation","alkali metal","superconductivity","Raman"],"issue":"24","publication_status":"published","fulldoi":"https://doi.org/10.1021/acsnano.6c02466","date_updated":"2026-06-29T09:00:33Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","researchdata_availability":"no","type":"journal_article","external_id":{"pmid":["42260723"]},"das_tickbox":"0","oa_version":"Published Version","abstract":[{"lang":"eng","text":"An in-operando electro-intercalation method for the on-chip synthesis of alkali-metal-intercalated materials and their Raman spectroscopic and transport characterization in ultrahigh vacuum (UHV) is developed. We apply this method to synthesize fulleride superconductors via Rb+ intercalation into a C60 film. During the intercalation, we monitor the stoichiometry via UHV-Raman spectroscopy and probe superconductivity via transport measurements. An increase of the superconducting transition temperature from 7.0 K to 14.5 K is observed when the stoichiometry is tuned from Rb2.7C60 to Rb3C60. In our experiment, an ionic Rb+ flux into the host material is induced by an applied electronic current via a Butler–Volmer-type mechanism. Electro-intercalation captivates through improved stoichiometric precision, the ability to smoothly vary stoichiometry via duration of current application, and the absence of a lower limit of the volume of the host material. It represents a powerful concept for the on-chip synthesis of intercalated materials, battery research, and beyond."}],"month":"06","OA_type":"hybrid","doi":"10.1021/acsnano.6c02466","status":"public","citation":{"mla":"Shchukin, Konstantin P., et al. “On-Chip Tuning of Superconductivity in Fullerides via Current-Driven Rb+ Intercalation.” ACS Nano, vol. 20, no. 24, American Chemical Society, 2026, pp. 17360–72, doi:10.1021/acsnano.6c02466.","apa":"Shchukin, K. P., Gallego Lacey, O. N., Coquinot, B., Jakowski, J., Huang, J., Staudenmayer, P., … Grüneis, A. (2026). On-chip tuning of superconductivity in fullerides via current-driven Rb+ intercalation. ACS Nano. American Chemical Society. https://doi.org/10.1021/acsnano.6c02466","short":"K.P. Shchukin, O.N. Gallego Lacey, B. Coquinot, J. Jakowski, J. Huang, P. Staudenmayer, Y. Falke, R.P. Pandeya, A. Grüneis, ACS Nano 20 (2026) 17360–17372.","ieee":"K. P. Shchukin et al., “On-chip tuning of superconductivity in fullerides via current-driven Rb+ intercalation,” ACS Nano, vol. 20, no. 24. American Chemical Society, pp. 17360–17372, 2026.","ista":"Shchukin KP, Gallego Lacey ON, Coquinot B, Jakowski J, Huang J, Staudenmayer P, Falke Y, Pandeya RP, Grüneis A. 2026. On-chip tuning of superconductivity in fullerides via current-driven Rb+ intercalation. ACS Nano. 20(24), 17360–17372.","ama":"Shchukin KP, Gallego Lacey ON, Coquinot B, et al. On-chip tuning of superconductivity in fullerides via current-driven Rb+ intercalation. ACS Nano. 2026;20(24):17360-17372. doi:10.1021/acsnano.6c02466","chicago":"Shchukin, Konstantin P., Oliver N. Gallego Lacey, Baptiste Coquinot, Jacek Jakowski, Jingsong Huang, Patrik Staudenmayer, Yannic Falke, Ram Prakash Pandeya, and Alexander Grüneis. “On-Chip Tuning of Superconductivity in Fullerides via Current-Driven Rb+ Intercalation.” ACS Nano. American Chemical Society, 2026. https://doi.org/10.1021/acsnano.6c02466."},"ddc":["530"],"date_published":"2026-06-23T00:00:00Z","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","image":"/images/cc_by.png"}},{"publication_status":"epub_ahead","fulldoi":"https://doi.org/10.1021/jacs.6c02632","date_updated":"2026-06-29T06:39:21Z","publication":"Journal of the American Chemical Society","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","day":"19","article_number":"jacs.6c02632","language":[{"iso":"eng"}],"year":"2026","pmid":1,"article_processing_charge":"No","citation":{"chicago":"Mendhe, Rahul Mahadeo, Neethu Christudas Dargily, Alagar Raja Kottaichamy, Shifali Dutt, Mukaddar Sk, Harish Makri Nimbegondi Kotresh, and Musthafa Ottakam Thotiyl. “Mechanical Gating of Redox Access in Molecular Electrocatalysis.” Journal of the American Chemical Society. American Chemical Society, 2026. https://doi.org/10.1021/jacs.6c02632.","ista":"Mendhe RM, Christudas Dargily N, Kottaichamy AR, Dutt S, Sk M, Makri Nimbegondi Kotresh H, Ottakam Thotiyl M. 2026. Mechanical gating of redox access in molecular electrocatalysis. Journal of the American Chemical Society., jacs. 6c02632.","ama":"Mendhe RM, Christudas Dargily N, Kottaichamy AR, et al. Mechanical gating of redox access in molecular electrocatalysis. Journal of the American Chemical Society. 2026. doi:10.1021/jacs.6c02632","short":"R.M. Mendhe, N. Christudas Dargily, A.R. Kottaichamy, S. Dutt, M. Sk, H. Makri Nimbegondi Kotresh, M. Ottakam Thotiyl, Journal of the American Chemical Society (2026).","ieee":"R. M. Mendhe et al., “Mechanical gating of redox access in molecular electrocatalysis,” Journal of the American Chemical Society. American Chemical Society, 2026.","mla":"Mendhe, Rahul Mahadeo, et al. “Mechanical Gating of Redox Access in Molecular Electrocatalysis.” Journal of the American Chemical Society, jacs. 6c02632, American Chemical Society, 2026, doi:10.1021/jacs.6c02632.","apa":"Mendhe, R. M., Christudas Dargily, N., Kottaichamy, A. R., Dutt, S., Sk, M., Makri Nimbegondi Kotresh, H., & Ottakam Thotiyl, M. (2026). Mechanical gating of redox access in molecular electrocatalysis. Journal of the American Chemical Society. American Chemical Society. https://doi.org/10.1021/jacs.6c02632"},"extern":"1","date_created":"2026-06-24T18:29:56Z","_id":"22141","date_published":"2026-06-19T00:00:00Z","doi":"10.1021/jacs.6c02632","OA_type":"closed access","status":"public","abstract":[{"lang":"eng","text":"Molecular electrocatalysis is commonly interpreted through electronic descriptors, implicitly treating catalysts as mechanically passive during redox cycling. Yet, electron transfer often imposes structural demands on molecular scaffolds, raising the question of whether internal mechanical constraints can directly regulate access to reactive states and, in turn, catalytic outcomes. Addressing this question has remained challenging because mechanical effects are typically inseparable from changes in composition or electronic structure. Here, we achieve this separation by exploiting two constitutionally identical molecular catalysts whose only distinction is ligand geometry. This minimal geometric variation enables or suppresses intramolecular hydrogen bonding, thereby encoding distinct mechanical constraints that isolate molecular mechanics as a variable in redox accessibility. In the α isomer, molecular constraints impose a mechanically enforced barrier that severely limits access to the reactive redox state. This disrupts the temporal ordering of elementary steps, and diverts reactivity toward competing hydrogen evolution, eroding both selectivity and stability. In contrast, mechanical compliance in the β isomer enables facile access to the redox-active state, allowing CO2 activation to intrinsically outpace water activation and yielding CO selectivities exceeding 92%. Operando spectroscopy and real-time mass spectrometry, combined with computational simulation, directly resolve this mechanically gated reaction sequence as it unfolds. Molecular mechanics thus emerge as determinants that link electron flow to reaction sequencing and catalytic selectivity, revealing that constitutionally similar catalysts can be mechanically, and therefore catalytically, distinct."}],"publication_identifier":{"eissn":["1520-5126"],"issn":["0002-7863"]},"month":"06","publisher":"American Chemical Society","type":"journal_article","external_id":{"pmid":["42319128"]},"author":[{"first_name":"Rahul Mahadeo","last_name":"Mendhe","full_name":"Mendhe, Rahul Mahadeo"},{"first_name":"Neethu","last_name":"Christudas Dargily","id":"19edef5c-384c-11ef-8188-c73c9c31d601","full_name":"Christudas Dargily, Neethu"},{"last_name":"Kottaichamy","full_name":"Kottaichamy, Alagar Raja","first_name":"Alagar Raja"},{"first_name":"Shifali","last_name":"Dutt","full_name":"Dutt, Shifali"},{"last_name":"Sk","full_name":"Sk, Mukaddar","first_name":"Mukaddar"},{"first_name":"Harish","last_name":"Makri Nimbegondi Kotresh","full_name":"Makri Nimbegondi Kotresh, Harish"},{"first_name":"Musthafa","full_name":"Ottakam Thotiyl, Musthafa","last_name":"Ottakam Thotiyl"}],"article_type":"original","oa_version":"None","title":"Mechanical gating of redox access in molecular electrocatalysis","quality_controlled":"1"},{"PlanS_conform":"1","acknowledgement":"Z.H. was supported by SNSF grant 200021-228014. M.K. was supported by ERC Starting Grant “RANDSTRUCT” No. 101076777. L.S. was supported by the Deutsche Forschungsgemeinschaft (DFG, German\r\nResearch Foundation)—CRC 1720–539309657. This research was conducted during the period M.S. served\r\nas a Clay Research Fellow. This work began when the authors were visiting Mathematisches Forschungsinstitut Oberwolfach, which\r\nprovided ideal working conditions. M.S. thanks Vishesh Jain for initial discussions regarding the problem.\r\nWe also thank the anonymous referee for helpful comments.","arxiv":1,"day":"01","volume":2026,"publication":"International Mathematics Research Notices","oa":1,"intvolume":" 2026","year":"2026","corr_author":"1","OA_place":"publisher","language":[{"iso":"eng"}],"supplementarymaterial":"no","file_date_updated":"2026-06-29T09:15:15Z","_id":"22147","date_created":"2026-06-28T22:01:35Z","title":"On random matrices with large corank","quality_controlled":"1","author":[{"first_name":"Zach","full_name":"Hunter, Zach","last_name":"Hunter"},{"first_name":"Matthew Alan","orcid":"0000-0002-4003-7567","last_name":"Kwan","full_name":"Kwan, Matthew Alan","id":"5fca0887-a1db-11eb-95d1-ca9d5e0453b3"},{"first_name":"Lisa","full_name":"Sauermann, Lisa","last_name":"Sauermann"},{"last_name":"Sawhney","full_name":"Sawhney, Mehtaab","first_name":"Mehtaab"}],"article_type":"original","publication_identifier":{"issn":["1073-7928"],"eissn":["1687-0247"]},"publisher":"Oxford University Press","file":[{"creator":"dernst","relation":"main_file","access_level":"open_access","file_id":"22151","checksum":"396b47d0532d7ea509f8cd30f11392a8","success":1,"file_size":524993,"file_name":"2026_IMRN_Hunter.pdf","date_updated":"2026-06-29T09:15:15Z","date_created":"2026-06-29T09:15:15Z","content_type":"application/pdf"}],"scopus_import":"1","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","researchdata_availability":"no","issue":"12","publication_status":"published","fulldoi":"https://doi.org/10.1093/imrn/rnag126","date_updated":"2026-06-29T09:19:14Z","article_processing_charge":"Yes (via OA deal)","has_accepted_license":"1","department":[{"_id":"MaKw"}],"article_number":"rnag126","project":[{"name":"Randomness and structure in combinatorics","grant_number":"101076777","_id":"bd95085b-d553-11ed-ba76-e55d3349be45"}],"status":"public","OA_type":"hybrid","doi":"10.1093/imrn/rnag126","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","image":"/images/cc_by.png"},"date_published":"2026-06-01T00:00:00Z","ddc":["500"],"citation":{"ista":"Hunter Z, Kwan MA, Sauermann L, Sawhney M. 2026. On random matrices with large corank. International Mathematics Research Notices. 2026(12), rnag126.","ama":"Hunter Z, Kwan MA, Sauermann L, Sawhney M. On random matrices with large corank. International Mathematics Research Notices. 2026;2026(12). doi:10.1093/imrn/rnag126","chicago":"Hunter, Zach, Matthew Alan Kwan, Lisa Sauermann, and Mehtaab Sawhney. “On Random Matrices with Large Corank.” International Mathematics Research Notices. Oxford University Press, 2026. https://doi.org/10.1093/imrn/rnag126.","short":"Z. Hunter, M.A. Kwan, L. Sauermann, M. Sawhney, International Mathematics Research Notices 2026 (2026).","ieee":"Z. Hunter, M. A. Kwan, L. Sauermann, and M. Sawhney, “On random matrices with large corank,” International Mathematics Research Notices, vol. 2026, no. 12. Oxford University Press, 2026.","apa":"Hunter, Z., Kwan, M. A., Sauermann, L., & Sawhney, M. (2026). On random matrices with large corank. International Mathematics Research Notices. Oxford University Press. https://doi.org/10.1093/imrn/rnag126","mla":"Hunter, Zach, et al. “On Random Matrices with Large Corank.” International Mathematics Research Notices, vol. 2026, no. 12, rnag126, Oxford University Press, 2026, doi:10.1093/imrn/rnag126."},"oa_version":"Published Version","das_tickbox":"0","type":"journal_article","external_id":{"arxiv":["2510.12933"]},"month":"06","abstract":[{"lang":"eng","text":"Let 1 ≤ k ≤ n and M be a random n × n matrix with independent uniformly random {±1}-entries. We\r\nshow that there exists an absolute constant c > 0 such that\r\nP[rank(M) ≤ n − k] ≤ exp(−cnk).\r\nThis confirms a well-known prediction in the area, extending a result of Rudelson (who previously\r\nproved this same result under the restriction k ≤ √n, via different methods)."}]},{"abstract":[{"lang":"eng","text":"We consider the cubic defocusing nonlinear Schrödinger equation in one dimension with the nonlinearity concentrated at a single point. We prove global well-posedness in the scaling-critical space L^2(R) and scattering for all such solutions. Moreover, we demonstrate that the same phenomenology holds whenever nonlinear effects are sufficiently concentrated in space."}],"month":"06","type":"journal_article","external_id":{"arxiv":["2507.14571"]},"das_tickbox":"1","oa_version":"Preprint","citation":{"mla":"Harrop-Griffiths, Benjamin, et al. “Scattering for the Nonlinear Schrödinger Equation with Concentrated Nonlinearity.” Proceedings of the American Mathematical Society, American Mathematical Society, 2026, doi:10.1090/proc/17760.","apa":"Harrop-Griffiths, B., Killip, R., & Vişan, M. (2026). Scattering for the nonlinear Schrödinger equation with concentrated nonlinearity. Proceedings of the American Mathematical Society. American Mathematical Society. https://doi.org/10.1090/proc/17760","short":"B. Harrop-Griffiths, R. Killip, M. Vişan, Proceedings of the American Mathematical Society (2026).","ieee":"B. Harrop-Griffiths, R. Killip, and M. Vişan, “Scattering for the nonlinear Schrödinger equation with concentrated nonlinearity,” Proceedings of the American Mathematical Society. American Mathematical Society, 2026.","chicago":"Harrop-Griffiths, Benjamin, Rowan Killip, and Monica Vişan. “Scattering for the Nonlinear Schrödinger Equation with Concentrated Nonlinearity.” Proceedings of the American Mathematical Society. American Mathematical Society, 2026. https://doi.org/10.1090/proc/17760.","ista":"Harrop-Griffiths B, Killip R, Vişan M. 2026. Scattering for the nonlinear Schrödinger equation with concentrated nonlinearity. Proceedings of the American Mathematical Society.","ama":"Harrop-Griffiths B, Killip R, Vişan M. Scattering for the nonlinear Schrödinger equation with concentrated nonlinearity. Proceedings of the American Mathematical Society. 2026. doi:10.1090/proc/17760"},"date_published":"2026-06-12T00:00:00Z","OA_type":"green","doi":"10.1090/proc/17760","status":"public","main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2507.14571"}],"article_processing_charge":"No","publication_status":"epub_ahead","date_updated":"2026-06-30T11:13:33Z","fulldoi":"https://doi.org/10.1090/proc/17760","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","scopus_import":"1","publication_identifier":{"issn":["0002-9939"],"eissn":["1088-6826"]},"publisher":"American Mathematical Society","author":[{"first_name":"Benjamin","full_name":"Harrop-Griffiths, Benjamin","last_name":"Harrop-Griffiths"},{"last_name":"Killip","full_name":"Killip, Rowan","first_name":"Rowan"},{"first_name":"Monica","last_name":"Visan","id":"056daca0-b8d1-11f0-964f-f91054abf8ca","full_name":"Visan, Monica"}],"article_type":"original","title":"Scattering for the nonlinear Schrödinger equation with concentrated nonlinearity","quality_controlled":"1","extern":"1","date_created":"2026-06-19T08:59:17Z","_id":"22097","OA_place":"repository","language":[{"iso":"eng"}],"year":"2026","oa":1,"publication":"Proceedings of the American Mathematical Society","arxiv":1,"day":"12"},{"citation":{"mla":"Vargas Barroso, Victor M., et al. “Developmental Emergence of Sparse and Structured Synaptic Connectivity in the Hippocampal CA3 Memory Circuit.” Nature Communications, vol. 17, 5540, Springer Nature, 2026, doi:10.1038/s41467-026-71914-x.","apa":"Vargas Barroso, V. M., Watson, J., Navas Olivé, A. C., Schlögl, A., & Jonas, P. M. (2026). Developmental emergence of sparse and structured synaptic connectivity in the hippocampal CA3 memory circuit. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-026-71914-x","short":"V.M. Vargas Barroso, J. Watson, A.C. Navas Olivé, A. Schlögl, P.M. Jonas, Nature Communications 17 (2026).","ieee":"V. M. Vargas Barroso, J. Watson, A. C. Navas Olivé, A. Schlögl, and P. M. Jonas, “Developmental emergence of sparse and structured synaptic connectivity in the hippocampal CA3 memory circuit,” Nature Communications, vol. 17. Springer Nature, 2026.","ama":"Vargas Barroso VM, Watson J, Navas Olivé AC, Schlögl A, Jonas PM. Developmental emergence of sparse and structured synaptic connectivity in the hippocampal CA3 memory circuit. Nature Communications. 2026;17. doi:10.1038/s41467-026-71914-x","ista":"Vargas Barroso VM, Watson J, Navas Olivé AC, Schlögl A, Jonas PM. 2026. Developmental emergence of sparse and structured synaptic connectivity in the hippocampal CA3 memory circuit. Nature Communications. 17, 5540.","chicago":"Vargas Barroso, Victor M, Jake Watson, Andrea C Navas Olivé, Alois Schlögl, and Peter M Jonas. “Developmental Emergence of Sparse and Structured Synaptic Connectivity in the Hippocampal CA3 Memory Circuit.” Nature Communications. Springer Nature, 2026. https://doi.org/10.1038/s41467-026-71914-x."},"ddc":["570"],"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","image":"/images/cc_by.png"},"date_published":"2026-06-23T00:00:00Z","dataavailabilitystatement":"Source data are provided with this paper. Additional original data are available from the corresponding author upon request. Code is available from https://doi.org/10.15479/AT-ISTA-21442 under the link https://research-explorer.ista.ac.at/download/21442/21443/ca3simu-vargas2026v1.tar.gz","doi":"10.1038/s41467-026-71914-x","OA_type":"gold","project":[{"name":"Biophysics and circuit function of a giant cortical glutamatergic synapse","grant_number":"692692","_id":"25B7EB9E-B435-11E9-9278-68D0E5697425","call_identifier":"H2020"},{"_id":"e62b56fe-ab3c-11f0-94c7-d181dd352b3b","grant_number":"101199096","name":"Synaptic mechanisms of engram storage and retrieval in CA3 hippocampal microcircuits"},{"_id":"260C2330-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","name":"ISTplus - Postdoctoral Fellowships","grant_number":"754411"},{"grant_number":"101026635","name":"Synaptic computations of the hippocampal CA3 circuitry","call_identifier":"H2020","_id":"fc2be41b-9c52-11eb-aca3-faa90aa144e9"},{"name":"Mechanisms of GABA release in hippocampal circuits","grant_number":"P36232","_id":"bd88be38-d553-11ed-ba76-81d5a70a6ef5"},{"name":"Synaptic networks of human brain","grant_number":"PAT 4178023","_id":"8d9195e9-16d5-11f0-9cad-d075be887a1e"},{"_id":"26366136-B435-11E9-9278-68D0E5697425","name":"Reglas de Conectividad funcional en el hipocampo"}],"status":"public","abstract":[{"text":"Hippocampal CA3 pyramidal neurons (PNs) form the largest autoassociative network in the mammalian brain. Whether CA3–CA3 recurrent connectivity is genetically preconfigured or environmentally shaped during ongoing memory storage is currently unknown. To address this question, we performed multicellular patch-clamp-based circuit mapping of up to eight CA3 PNs in the mouse hippocampus at multiple postnatal time points (P7–8, P18–25, and P45–50). Here, we show that the hippocampal CA3 network undergoes a developmental transformation from local, dense, and random connectivity to a distributed, sparse, and structured configuration. Thus, sparse and structured connectivity may emerge via experience-dependent mechanisms. In parallel, the strength of single synapses is downregulated; single synaptic events are sufficient to trigger postsynaptic spiking early in development, whereas spatial summation of several inputs is required at later time points. Biologically inspired models of memory storage by Hebbian synaptic plasticity and retrieval via pattern completion suggest that developmental changes improve specific aspects of memory storage and retrieval. Our results imply a developmental transformation of the neuronal code and the memory functions in the hippocampal CA3 network.","lang":"eng"}],"related_material":{"record":[{"status":"public","id":"21442","relation":"research_data"}]},"month":"06","external_id":{"pmid":["42014695"]},"type":"journal_article","oa_version":"Published Version","das_tickbox":"1","fulldoi":"https://doi.org/10.1038/s41467-026-71914-x","date_updated":"2026-07-01T06:47:49Z","publication_status":"published","researchdata_availability":"yes","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","ec_funded":1,"article_number":"5540","pmid":1,"department":[{"_id":"PeJo"},{"_id":"ScienComp"}],"has_accepted_license":"1","article_processing_charge":"Yes","date_created":"2026-06-30T13:05:52Z","_id":"22229","file_date_updated":"2026-07-01T06:46:06Z","supplementarymaterial":"yes","scopus_import":"1","file":[{"content_type":"application/pdf","date_updated":"2026-07-01T06:46:06Z","date_created":"2026-07-01T06:46:06Z","file_name":"2026_NatureComm_VargasBarroso.pdf","file_size":18304997,"success":1,"checksum":"d0b0093493926985b4c268662ff4d556","file_id":"22231","access_level":"open_access","creator":"dernst","relation":"main_file"}],"publisher":"Springer Nature","publication_identifier":{"eissn":["2041-1723"]},"author":[{"full_name":"Vargas Barroso, Victor M","last_name":"Vargas Barroso","id":"2F55A9DE-F248-11E8-B48F-1D18A9856A87","first_name":"Victor M"},{"last_name":"Watson","id":"63836096-4690-11EA-BD4E-32803DDC885E","full_name":"Watson, Jake","orcid":"0000-0002-8698-3823","first_name":"Jake"},{"first_name":"Andrea C","orcid":"0000-0002-9280-8597","id":"739d26c9-52e8-11ee-8d72-f14d3893b4ce","last_name":"Navas Olivé","full_name":"Navas Olivé, Andrea C"},{"orcid":"0000-0002-5621-8100","first_name":"Alois","full_name":"Schlögl, Alois","id":"45BF87EE-F248-11E8-B48F-1D18A9856A87","last_name":"Schlögl"},{"last_name":"Jonas","full_name":"Jonas, Peter M","id":"353C1B58-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-5001-4804","first_name":"Peter M"}],"article_type":"original","DOAJ_listed":"1","quality_controlled":"1","title":"Developmental emergence of sparse and structured synaptic connectivity in the hippocampal CA3 memory circuit","volume":17,"publication":"Nature Communications","day":"23","acknowledgement":"We thank Jose Guzman, Simon Hippenmeyer, and Tim Vogels for critically reading the manuscript, Jozsef Csicsvari for useful discussions, Florian Marr for technical assistance, and Eleftheria Kralli-Beller for manuscript editing. This research was supported by the Scientific Services Units (SSUs) of ISTA: the preclinical facility (PCF) provided housing and breeding of the animals, the imaging and optics facility (IOF) offered technical training and state of the art equipment, the Miba machine shop contributed to the construction and maintenance of multicellular recording setups, and the scientific computing unit helped with the large-scale simulations. The project received funding from the European Union’s Horizon 2020 research and innovation programme (ERC Advanced Grants No 692692 GIANTSYN and 101199096 CA3-SYNGRAM to P.J.; Marie Skłodowska-Curie Grant 754411 to V.V.B.; Marie Skłodowska-Curie Grant 101026635 to J.F.W.), the Fond zur Förderung der Wissenschaftlichen Forschung (P 36232-B, PAT4178023, and 10.55776/CoE16 to P.J.), and the Nomis Foundation (fellowship to A.N.-O.). V.V.B. received funding from a CONACyT fellowship (289638).","PlanS_conform":"1","language":[{"iso":"eng"}],"corr_author":"1","OA_place":"publisher","year":"2026","acknowledged_ssus":[{"_id":"PreCl"},{"_id":"Bio"},{"_id":"M-Shop"},{"_id":"ScienComp"}],"intvolume":" 17","oa":1},{"_id":"21442","date_created":"2026-03-12T08:20:46Z","file_date_updated":"2026-03-12T10:24:45Z","citation":{"ieee":"A. Schlögl, “CA3Simu v1.06 (vargas2026v1).” Institute of Science and Technology Austria, 2026.","short":"A. Schlögl, (2026).","chicago":"Schlögl, Alois. “CA3Simu v1.06 (Vargas2026v1).” Institute of Science and Technology Austria, 2026. https://doi.org/10.15479/AT-ISTA-21442.","ista":"Schlögl A. 2026. CA3Simu v1.06 (vargas2026v1), Institute of Science and Technology Austria, 10.15479/AT-ISTA-21442.","ama":"Schlögl A. CA3Simu v1.06 (vargas2026v1). 2026. doi:10.15479/AT-ISTA-21442","apa":"Schlögl, A. (2026). CA3Simu v1.06 (vargas2026v1). Institute of Science and Technology Austria. https://doi.org/10.15479/AT-ISTA-21442","mla":"Schlögl, Alois. CA3Simu v1.06 (Vargas2026v1). Institute of Science and Technology Austria, 2026, doi:10.15479/AT-ISTA-21442."},"date_published":"2026-03-12T00:00:00Z","tmp":{"legal_code_url":"https://www.gnu.org/licenses/gpl-3.0.en.html","name":"GNU General Public License 3.0","short":"GPL 3.0"},"doi":"10.15479/AT-ISTA-21442","project":[{"name":"Synaptic mechanisms of engram storage and retrieval in CA3 hippocampal microcircuits","grant_number":"101199096","_id":"e62b56fe-ab3c-11f0-94c7-d181dd352b3b"},{"_id":"bd88be38-d553-11ed-ba76-81d5a70a6ef5","grant_number":"P36232","name":"Mechanisms of GABA release in hippocampal circuits"},{"_id":"8d9195e9-16d5-11f0-9cad-d075be887a1e","name":"Synaptic networks of human brain","grant_number":"PAT 4178023"},{"grant_number":"692692","name":"Biophysics and circuit function of a giant cortical glutamatergic synapse","call_identifier":"H2020","_id":"25B7EB9E-B435-11E9-9278-68D0E5697425"}],"status":"public","related_material":{"record":[{"relation":"used_in_publication","id":"22229","status":"public"}]},"file":[{"file_id":"21443","access_level":"open_access","relation":"main_file","creator":"schloegl","success":1,"checksum":"441c8827717dcda05f91c127d15cf1e9","content_type":"application/gzip","file_name":"ca3simu-vargas2026v1.tar.gz","date_created":"2026-03-12T08:19:14Z","date_updated":"2026-03-12T08:19:14Z","file_size":160410},{"success":1,"checksum":"3c0092076228a15c0a7ae703192d43ea","creator":"schloegl","relation":"main_file","file_id":"21445","access_level":"open_access","file_size":10923,"content_type":"text/markdown","date_updated":"2026-03-12T10:24:45Z","date_created":"2026-03-12T10:24:45Z","file_name":"README.md"}],"publisher":"Institute of Science and Technology Austria","month":"03","author":[{"first_name":"Alois","orcid":"0000-0002-5621-8100","last_name":"Schlögl","id":"45BF87EE-F248-11E8-B48F-1D18A9856A87","full_name":"Schlögl, Alois"}],"type":"software","title":"CA3Simu v1.06 (vargas2026v1)","fulldoi":"https://doi.org/10.15479/AT-ISTA-21442","date_updated":"2026-07-01T06:47:49Z","ec_funded":1,"user_id":"68b8ca59-c5b3-11ee-8790-cd641c68093d","day":"12","keyword":["hypocampus","ca3 simulations","modelling"],"corr_author":"1","year":"2026","license":"https://opensource.org/licenses/GPL-3.0","department":[{"_id":"ScienComp"},{"_id":"PeJo"}],"has_accepted_license":"1","oa":1},{"article_processing_charge":"No","article_number":"81","fulldoi":"https://doi.org/10.1007/s00028-026-01228-4","date_updated":"2026-07-02T06:02:36Z","publication_status":"published","issue":"3","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","type":"journal_article","external_id":{"arxiv":["2506.23868"]},"oa_version":"Preprint","das_tickbox":"1","abstract":[{"lang":"eng","text":"We prove uniform-in-time a priori Hs bounds for solutions to the intermediate longwave equation\r\nposed both on the line and on the circle, covering the range −1\r\n2 < s ≤ 0. Additionally, we prove that the\r\nset of orbits emanating from a bounded and equicontinuous set in Hs is also bounded and equicontinuous\r\nin Hs . Our proof is based on the identification of a suitable Lax pair formulation for the intermediate long\r\nwave equation."}],"month":"06","OA_type":"green","doi":"10.1007/s00028-026-01228-4","main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2506.23868","open_access":"1"}],"status":"public","citation":{"apa":"Harrop-Griffiths, B., Killip, R., & Vişan, M. (2026). A priori bounds and equicontinuity of orbits for the intermediate long wave equation. Journal of Evolution Equations. Springer Nature. https://doi.org/10.1007/s00028-026-01228-4","mla":"Harrop-Griffiths, B., et al. “A Priori Bounds and Equicontinuity of Orbits for the Intermediate Long Wave Equation.” Journal of Evolution Equations, vol. 26, no. 3, 81, Springer Nature, 2026, doi:10.1007/s00028-026-01228-4.","short":"B. Harrop-Griffiths, R. Killip, M. Vişan, Journal of Evolution Equations 26 (2026).","ieee":"B. Harrop-Griffiths, R. Killip, and M. Vişan, “A priori bounds and equicontinuity of orbits for the intermediate long wave equation,” Journal of Evolution Equations, vol. 26, no. 3. Springer Nature, 2026.","ista":"Harrop-Griffiths B, Killip R, Vişan M. 2026. A priori bounds and equicontinuity of orbits for the intermediate long wave equation. Journal of Evolution Equations. 26(3), 81.","chicago":"Harrop-Griffiths, B., R. Killip, and Monica Vişan. “A Priori Bounds and Equicontinuity of Orbits for the Intermediate Long Wave Equation.” Journal of Evolution Equations. Springer Nature, 2026. https://doi.org/10.1007/s00028-026-01228-4.","ama":"Harrop-Griffiths B, Killip R, Vişan M. A priori bounds and equicontinuity of orbits for the intermediate long wave equation. Journal of Evolution Equations. 2026;26(3). doi:10.1007/s00028-026-01228-4"},"date_published":"2026-06-08T00:00:00Z","intvolume":" 26","oa":1,"language":[{"iso":"eng"}],"OA_place":"repository","year":"2026","day":"08","arxiv":1,"volume":26,"publication":"Journal of Evolution Equations","author":[{"first_name":"B.","full_name":"Harrop-Griffiths, B.","last_name":"Harrop-Griffiths"},{"last_name":"Killip","full_name":"Killip, R.","first_name":"R."},{"full_name":"Visan, Monica","last_name":"Visan","id":"056daca0-b8d1-11f0-964f-f91054abf8ca","first_name":"Monica"}],"article_type":"original","quality_controlled":"1","title":"A priori bounds and equicontinuity of orbits for the intermediate long wave equation","scopus_import":"1","publisher":"Springer Nature","publication_identifier":{"eissn":["1424-3202"],"issn":["1424-3199"]},"date_created":"2026-06-19T08:58:33Z","_id":"22096","extern":"1"},{"citation":{"short":"J.M. Muñoz Hermosilla, E. Miles, M. McCarthy, J.V. Melo Velasco, F. Hardmeier, P. GANTAYAT, A. Fontrodona-Bach, G. Jouvet, F. Pellicciotti, in:, EGU General Assembly 2026, European Geosciences Union, 2026.","ieee":"J. M. Muñoz Hermosilla et al., “Constraining debris input to Oberaletsch Glacier using ensemble-based Lagrangian modelling,” in EGU General Assembly 2026, Vienna, Austria & Virtual, 2026.","chicago":"Muñoz Hermosilla, José M, Evan Miles, Michael McCarthy, Juan Vicente Melo Velasco, Florian Hardmeier, PRATEEK GANTAYAT, Adrià Fontrodona-Bach, Guillaume Jouvet, and Francesca Pellicciotti. “Constraining Debris Input to Oberaletsch Glacier Using Ensemble-Based Lagrangian Modelling.” In EGU General Assembly 2026. European Geosciences Union, 2026. https://doi.org/10.5194/egusphere-egu26-19367.","ama":"Muñoz Hermosilla JM, Miles E, McCarthy M, et al. Constraining debris input to Oberaletsch Glacier using ensemble-based Lagrangian modelling. In: EGU General Assembly 2026. European Geosciences Union; 2026. doi:10.5194/egusphere-egu26-19367","ista":"Muñoz Hermosilla JM, Miles E, McCarthy M, Melo Velasco JV, Hardmeier F, GANTAYAT P, Fontrodona-Bach A, Jouvet G, Pellicciotti F. 2026. Constraining debris input to Oberaletsch Glacier using ensemble-based Lagrangian modelling. EGU General Assembly 2026. EGU General Assembly, EGU26-19367.","apa":"Muñoz Hermosilla, J. M., Miles, E., McCarthy, M., Melo Velasco, J. V., Hardmeier, F., GANTAYAT, P., … Pellicciotti, F. (2026). Constraining debris input to Oberaletsch Glacier using ensemble-based Lagrangian modelling. In EGU General Assembly 2026. Vienna, Austria & Virtual: European Geosciences Union. https://doi.org/10.5194/egusphere-egu26-19367","mla":"Muñoz Hermosilla, José M., et al. “Constraining Debris Input to Oberaletsch Glacier Using Ensemble-Based Lagrangian Modelling.” EGU General Assembly 2026, EGU26-19367, European Geosciences Union, 2026, doi:10.5194/egusphere-egu26-19367."},"ddc":["550"],"date_published":"2026-07-02T00:00:00Z","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","image":"/images/cc_by.png"},"doi":"10.5194/egusphere-egu26-19367","OA_type":"gold","status":"public","month":"07","type":"conference_abstract","oa_version":"Published Version","publication_status":"published","fulldoi":"https://doi.org/10.5194/egusphere-egu26-19367","date_updated":"2026-07-02T06:42:37Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_number":"EGU26-19367","department":[{"_id":"FrPe"},{"_id":"GradSch"}],"article_processing_charge":"No","has_accepted_license":"1","file_date_updated":"2026-07-02T06:22:50Z","_id":"22119","date_created":"2026-06-22T12:16:50Z","file":[{"checksum":"2ea3e691cfa53176d0e801b9172842d6","success":1,"access_level":"open_access","file_id":"22233","creator":"dernst","relation":"main_file","date_updated":"2026-07-02T06:22:50Z","date_created":"2026-07-02T06:22:50Z","file_name":"2026_EGU26_MunozHermosilla.pdf","content_type":"application/pdf","file_size":284023}],"publisher":"European Geosciences Union","author":[{"first_name":"José M","orcid":"0000-0002-1990-8508","id":"e1037a6d-646e-11ef-b402-e0ed9ab0901e","full_name":"Muñoz Hermosilla, José M","last_name":"Muñoz Hermosilla"},{"first_name":"Evan","full_name":"Miles, Evan","last_name":"Miles"},{"full_name":"McCarthy, Michael","id":"22a2674a-61ce-11ee-94b5-d18813baf16f","last_name":"McCarthy","first_name":"Michael"},{"id":"2611dec0-b9c6-11ed-9bea-a81c2b17a549","full_name":"Melo Velasco, Juan Vicente","last_name":"Melo Velasco","first_name":"Juan Vicente"},{"first_name":"Florian","last_name":"Hardmeier","full_name":"Hardmeier, Florian"},{"last_name":"GANTAYAT","id":"02734268-3e8d-11ef-80a1-cec4a088d004","full_name":"GANTAYAT, PRATEEK","first_name":"PRATEEK"},{"first_name":"Adrià","full_name":"Fontrodona-Bach, Adrià","id":"f06891fd-9f42-11ee-8632-a20971c43046","last_name":"Fontrodona-Bach"},{"first_name":"Guillaume","full_name":"Jouvet, Guillaume","last_name":"Jouvet"},{"first_name":"Francesca","orcid":"0000-0002-5554-8087","full_name":"Pellicciotti, Francesca","last_name":"Pellicciotti","id":"b28f055a-81ea-11ed-b70c-a9fe7f7b0e70"}],"title":"Constraining debris input to Oberaletsch Glacier using ensemble-based Lagrangian modelling","publication":"EGU General Assembly 2026","day":"02","corr_author":"1","OA_place":"publisher","language":[{"iso":"eng"}],"year":"2026","conference":{"location":"Vienna, Austria & Virtual","name":"EGU General Assembly","start_date":"2026-05-03","end_date":"2026-05-08"},"oa":1},{"supplementarymaterial":"no","file_date_updated":"2026-07-06T06:13:12Z","_id":"22241","date_created":"2026-07-03T21:03:48Z","article_type":"original","author":[{"first_name":"Peiyuan","last_name":"Xie","full_name":"Xie, Peiyuan","id":"488e236c-6bad-11f0-9831-859175c78e8a"},{"first_name":"Christian","full_name":"Hafner, Christian","last_name":"Hafner","id":"400429CC-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Christopher J","orcid":"0000-0001-6646-5546","full_name":"Wojtan, Christopher J","id":"3C61F1D2-F248-11E8-B48F-1D18A9856A87","last_name":"Wojtan"}],"title":"Fast and exact winding numbers for triangle meshes","quality_controlled":"1","file":[{"date_updated":"2026-07-06T06:13:12Z","date_created":"2026-07-06T06:13:12Z","file_name":"2026_TransactionsGraphics_Xie.pdf","content_type":"application/pdf","file_size":5212838,"access_level":"open_access","file_id":"22249","relation":"main_file","creator":"dernst","checksum":"7e36e69f377b680a893e65b620b43813","success":1}],"scopus_import":"1","publication_identifier":{"eissn":["1557-7368"],"issn":["0730-0301"]},"publisher":"Association for Computing Machinery","acknowledgement":"We thank Sadashige Ishida and Ryusuke Sugimoto for their insightful discussions and proofreading and other members of the ISTA\r\nVisual Computing Group for their general feedback. This project was\r\nfunded in part by the European Research Council (ERC Consolidator\r\nGrant 101045083 CoDiNA).","day":"03","PlanS_conform":"1","volume":45,"publication":"ACM Transactions on Graphics","intvolume":" 45","oa":1,"corr_author":"1","OA_place":"publisher","language":[{"iso":"eng"}],"year":"2026","OA_type":"hybrid","doi":"10.1145/3811339","status":"public","project":[{"_id":"34bc2376-11ca-11ed-8bc3-9a3b3961a088","grant_number":"101045083","name":"Computational Discovery of Numerical Algorithms for Animation and Simulation of Natural Phenomena"}],"ddc":["000"],"citation":{"short":"P. Xie, C. Hafner, C. Wojtan, ACM Transactions on Graphics 45 (2026).","ieee":"P. Xie, C. Hafner, and C. Wojtan, “Fast and exact winding numbers for triangle meshes,” ACM Transactions on Graphics, vol. 45, no. 4. Association for Computing Machinery, 2026.","ama":"Xie P, Hafner C, Wojtan C. Fast and exact winding numbers for triangle meshes. ACM Transactions on Graphics. 2026;45(4). doi:10.1145/3811339","ista":"Xie P, Hafner C, Wojtan C. 2026. Fast and exact winding numbers for triangle meshes. ACM Transactions on Graphics. 45(4), 41.","chicago":"Xie, Peiyuan, Christian Hafner, and Chris Wojtan. “Fast and Exact Winding Numbers for Triangle Meshes.” ACM Transactions on Graphics. Association for Computing Machinery, 2026. https://doi.org/10.1145/3811339.","apa":"Xie, P., Hafner, C., & Wojtan, C. (2026). Fast and exact winding numbers for triangle meshes. ACM Transactions on Graphics. Association for Computing Machinery. https://doi.org/10.1145/3811339","mla":"Xie, Peiyuan, et al. “Fast and Exact Winding Numbers for Triangle Meshes.” ACM Transactions on Graphics, vol. 45, no. 4, 41, Association for Computing Machinery, 2026, doi:10.1145/3811339."},"date_published":"2026-07-03T00:00:00Z","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","image":"/images/cc_by.png"},"type":"journal_article","oa_version":"Published Version","das_tickbox":"0","abstract":[{"lang":"eng","text":"We revisit the computation of 3D generalized winding numbers, a useful measure for inside-outside classification on triangle meshes with gaps, self-intersections, and open boundaries. At the core of our new method is an analytical reduction of the surface integral that defines the winding number, resulting in a single ray-mesh intersection test and an elementary sum over boundary edges per evaluation. This construction is orders of magnitude more efficient than the state of the art in practice, which we show in an extensive performance benchmark. Conveniently, the method also reduces to the best-available asymptotic complexity in the worst case, and it introduces no approximations apart from floating-point errors. Our algorithm is conceptually simple to understand, straightforward to implement and debug, and it works reliably even on extremely noisy and corrupt input geometry."}],"month":"07","publication_status":"published","issue":"4","date_updated":"2026-07-06T06:14:18Z","fulldoi":"https://doi.org/10.1145/3811339","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","researchdata_availability":"no","department":[{"_id":"GradSch"},{"_id":"ChWo"}],"article_processing_charge":"Yes (via OA deal)","has_accepted_license":"1","article_number":"41"},{"day":"18","acknowledgement":"We thank Nathan Keim, Aayush Desai, Nicholas Barton,\r\nand Gašper Tkacik for important and stimulating discussions. ˇ\r\nThe work was funded by the Institute of Science and Technology Austria.","PlanS_conform":"1","publication":"PRX Life","volume":4,"intvolume":" 4","oa":1,"language":[{"iso":"eng"}],"OA_place":"publisher","corr_author":"1","year":"2026","supplementarymaterial":"no","_id":"22248","date_created":"2026-07-05T22:01:37Z","file_date_updated":"2026-07-06T07:24:43Z","author":[{"full_name":"Zu, Mengjie","last_name":"Zu","id":"26dd9e7c-e86a-11eb-a854-82ac731c9ae2","first_name":"Mengjie"},{"last_name":"Goodrich","full_name":"Goodrich, Carl Peter","id":"EB352CD2-F68A-11E9-89C5-A432E6697425","first_name":"Carl Peter","orcid":"0000-0002-1307-5074"}],"DOAJ_listed":"1","article_type":"original","quality_controlled":"1","title":"Learning by Training: Emergent physical memory from cyclically tuning disordered sphere packings","scopus_import":"1","file":[{"creator":"dernst","relation":"main_file","access_level":"open_access","file_id":"22251","checksum":"e2d13c30bf9c036951fd2ba3455cf72a","success":1,"file_size":2758728,"date_created":"2026-07-06T07:24:43Z","date_updated":"2026-07-06T07:24:43Z","file_name":"2026_PRXLife_Zu.pdf","content_type":"application/pdf"}],"publisher":"American Physical Society","publication_identifier":{"eissn":["2835-8279"]},"fulldoi":"https://doi.org/10.1103/48k2-cw3b","date_updated":"2026-07-06T07:28:45Z","publication_status":"published","issue":"2","researchdata_availability":"upon request","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","department":[{"_id":"CaGo"}],"has_accepted_license":"1","article_processing_charge":"Yes","article_number":"023029","doi":"10.1103/48k2-cw3b","dataavailabilitystatement":"The data that support the findings of this article are not\r\npublicly available. The data are available from the authors\r\nupon reasonable request.","OA_type":"gold","status":"public","citation":{"ieee":"M. Zu and C. P. Goodrich, “Learning by Training: Emergent physical memory from cyclically tuning disordered sphere packings,” PRX Life, vol. 4, no. 2. American Physical Society, 2026.","short":"M. Zu, C.P. Goodrich, PRX Life 4 (2026).","ama":"Zu M, Goodrich CP. Learning by Training: Emergent physical memory from cyclically tuning disordered sphere packings. PRX Life. 2026;4(2). doi:10.1103/48k2-cw3b","ista":"Zu M, Goodrich CP. 2026. Learning by Training: Emergent physical memory from cyclically tuning disordered sphere packings. PRX Life. 4(2), 023029.","chicago":"Zu, Mengjie, and Carl Peter Goodrich. “Learning by Training: Emergent Physical Memory from Cyclically Tuning Disordered Sphere Packings.” PRX Life. American Physical Society, 2026. https://doi.org/10.1103/48k2-cw3b.","apa":"Zu, M., & Goodrich, C. P. (2026). Learning by Training: Emergent physical memory from cyclically tuning disordered sphere packings. PRX Life. American Physical Society. https://doi.org/10.1103/48k2-cw3b","mla":"Zu, Mengjie, and Carl Peter Goodrich. “Learning by Training: Emergent Physical Memory from Cyclically Tuning Disordered Sphere Packings.” PRX Life, vol. 4, no. 2, 023029, American Physical Society, 2026, doi:10.1103/48k2-cw3b."},"ddc":["570"],"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","image":"/images/cc_by.png"},"date_published":"2026-06-18T00:00:00Z","type":"journal_article","oa_version":"Published Version","das_tickbox":"1","abstract":[{"text":"Many living and artificial systems improve their fitness or performance by adapting to changing environments or diverse training data. However, it remains unclear how environmental variation shapes adaptation, what is learned, and when memory of past conditions is retained. Here we show how cyclic environmental change can produce robust memory. Using a model athermal disordered solid trained by inverse design to attain target elastic properties over a prescribed range, we find that the system evolves toward a marginally absorbing manifold (MAM), meaning that training is reversible within the training range but not beyond it, which encodes a memory of that range. We further propose a general mechanism for MAM formation and memory encoding based on discontinuities in the gradient of the trained quantity. These results provide a simple, broadly applicable physical framework for how adaptive systems learn under changing environments and retain memory of past conditions.","lang":"eng"}],"month":"06"},{"year":"2026","language":[{"iso":"eng"}],"OA_place":"repository","oa":1,"intvolume":" 136","publication":"Physical Review Letters","volume":136,"arxiv":1,"day":"12","acknowledgement":"We thank Oscar Schmitt Kremer for his help with the Kalman filter and the rest of our colleagues at the ETH Photonics Laboratory for fruitful discussions. This research has been supported by the Swiss SERI Quantum Initiative (Grants No. UeM019-2 and No. UeM029-3), the Swiss National Science Foundation (Grant No. 51NF40-160591), and the European Research Council (ERC) under the Grant Agreement No. [951234] (Q-Xtreme ERC-2020-SyG). M. C. S. acknowledges support through an SNSF Fellowship (Grant No. 224465).","publisher":"American Physical Society","publication_identifier":{"issn":["0031-9007"],"eissn":["1079-7114"]},"scopus_import":"1","quality_controlled":"1","title":"Nanomechanical sensor resolving impulsive forces below its zero-point fluctuations","article_type":"original","author":[{"first_name":"Martynas","last_name":"Skrabulis","full_name":"Skrabulis, Martynas"},{"first_name":"Martin Colombano","full_name":"Sosa, Martin Colombano","last_name":"Sosa"},{"first_name":"Nicola Carlon","last_name":"Zambon","full_name":"Zambon, Nicola Carlon"},{"full_name":"Militaru, Andrei","last_name":"Militaru","id":"d67706f8-8eb1-11ee-ad1b-9c30dfa19e0b","first_name":"Andrei"},{"full_name":"Rossi, Massimiliano","last_name":"Rossi","first_name":"Massimiliano"},{"first_name":"Martin","full_name":"Frimmer, Martin","last_name":"Frimmer"},{"first_name":"Lukas","last_name":"Novotny","full_name":"Novotny, Lukas"}],"_id":"22244","date_created":"2026-07-05T22:01:36Z","supplementarymaterial":"yes","article_number":"233604","article_processing_charge":"No","department":[{"_id":"JoFi"}],"researchdata_availability":"yes","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","fulldoi":"https://doi.org/10.1103/9wzm-3qyb","date_updated":"2026-07-06T07:07:24Z","issue":"23","publication_status":"published","month":"06","abstract":[{"lang":"eng","text":"The sensitivity of a mechanical transducer is ultimately limited by its inherent quantum fluctuations. Here, we use an optically levitated nanoparticle to measure impulsive forces smaller than the particle’s zero-point momentum uncertainty. Our approach relies on reversibly squeezing the levitated particle’s center-of-mass motion to coherently amplify the perturbation. We demonstrate an impulsive-force resolution as small as 6.9 keV/c, a value 0.6 dB below the sensor’s zero-point value."}],"oa_version":"Preprint","das_tickbox":"1","type":"journal_article","external_id":{"arxiv":["2601.19392"]},"date_published":"2026-06-12T00:00:00Z","citation":{"mla":"Skrabulis, Martynas, et al. “Nanomechanical Sensor Resolving Impulsive Forces below Its Zero-Point Fluctuations.” Physical Review Letters, vol. 136, no. 23, 233604, American Physical Society, 2026, doi:10.1103/9wzm-3qyb.","apa":"Skrabulis, M., Sosa, M. C., Zambon, N. C., Militaru, A., Rossi, M., Frimmer, M., & Novotny, L. (2026). Nanomechanical sensor resolving impulsive forces below its zero-point fluctuations. Physical Review Letters. American Physical Society. https://doi.org/10.1103/9wzm-3qyb","ama":"Skrabulis M, Sosa MC, Zambon NC, et al. Nanomechanical sensor resolving impulsive forces below its zero-point fluctuations. Physical Review Letters. 2026;136(23). doi:10.1103/9wzm-3qyb","chicago":"Skrabulis, Martynas, Martin Colombano Sosa, Nicola Carlon Zambon, Andrei Militaru, Massimiliano Rossi, Martin Frimmer, and Lukas Novotny. “Nanomechanical Sensor Resolving Impulsive Forces below Its Zero-Point Fluctuations.” Physical Review Letters. American Physical Society, 2026. https://doi.org/10.1103/9wzm-3qyb.","ista":"Skrabulis M, Sosa MC, Zambon NC, Militaru A, Rossi M, Frimmer M, Novotny L. 2026. Nanomechanical sensor resolving impulsive forces below its zero-point fluctuations. Physical Review Letters. 136(23), 233604.","ieee":"M. Skrabulis et al., “Nanomechanical sensor resolving impulsive forces below its zero-point fluctuations,” Physical Review Letters, vol. 136, no. 23. American Physical Society, 2026.","short":"M. Skrabulis, M.C. Sosa, N.C. Zambon, A. Militaru, M. Rossi, M. Frimmer, L. Novotny, Physical Review Letters 136 (2026)."},"main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2601.19392"}],"status":"public","dataavailabilitystatement":"The data that support the findings of this article are openly available DOI 10.3929/ethz-c-000798807","doi":"10.1103/9wzm-3qyb","OA_type":"green"},{"supplementarymaterial":"no","_id":"22246","page":"2140-2151","date_created":"2026-07-05T22:01:37Z","file_date_updated":"2026-07-06T10:23:09Z","quality_controlled":"1","title":"Cutting planarians: Planar emulators for string graphs","author":[{"first_name":"Hsien Chih","last_name":"Chang","full_name":"Chang, Hsien Chih"},{"full_name":"Conroy, Jonathan","last_name":"Conroy","first_name":"Jonathan"},{"last_name":"Tan","full_name":"Tan, Zihan","first_name":"Zihan"},{"first_name":"Da Wei","full_name":"Zheng, Da Wei","last_name":"Zheng","id":"af77956b-e859-11ef-8dc9-d301b898e32f"}],"publisher":"Association for Computing Machinery","publication_identifier":{"isbn":["9798400725364"],"issn":["0737-8017"]},"scopus_import":"1","file":[{"file_size":2015699,"content_type":"application/pdf","date_updated":"2026-07-06T10:23:09Z","date_created":"2026-07-06T10:23:09Z","file_name":"2026_STOC_Chang.pdf","success":1,"checksum":"c184596a3e18fee912caef4c7751a96d","creator":"dernst","relation":"main_file","file_id":"22253","access_level":"open_access"}],"arxiv":1,"day":"09","acknowledgement":"Hsien-Chih Chang and Jonathan Conroy are supported by the U.S.\r\nNational Science Foundation CAREER Award under the Grant No.\r\nCCF-2443017.","publication":"58th Annual ACM Symposium on Theory of Computing","oa":1,"conference":{"start_date":"2026-06-22","end_date":"2026-06-26","location":"Salt Lake City, UT, United States","name":"STOC: Symposium on the Theory of Computing"},"year":"2026","language":[{"iso":"eng"}],"OA_place":"publisher","corr_author":"1","status":"public","doi":"10.1145/3798129.3800917","OA_type":"gold","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","image":"/images/cc_by.png"},"date_published":"2026-06-09T00:00:00Z","ddc":["500","000"],"citation":{"apa":"Chang, H. C., Conroy, J., Tan, Z., & Zheng, D. W. (2026). Cutting planarians: Planar emulators for string graphs. In 58th Annual ACM Symposium on Theory of Computing (pp. 2140–2151). Salt Lake City, UT, United States: Association for Computing Machinery. https://doi.org/10.1145/3798129.3800917","mla":"Chang, Hsien Chih, et al. “Cutting Planarians: Planar Emulators for String Graphs.” 58th Annual ACM Symposium on Theory of Computing, Association for Computing Machinery, 2026, pp. 2140–51, doi:10.1145/3798129.3800917.","ista":"Chang HC, Conroy J, Tan Z, Zheng DW. 2026. Cutting planarians: Planar emulators for string graphs. 58th Annual ACM Symposium on Theory of Computing. STOC: Symposium on the Theory of Computing, 2140–2151.","chicago":"Chang, Hsien Chih, Jonathan Conroy, Zihan Tan, and Da Wei Zheng. “Cutting Planarians: Planar Emulators for String Graphs.” In 58th Annual ACM Symposium on Theory of Computing, 2140–51. Association for Computing Machinery, 2026. https://doi.org/10.1145/3798129.3800917.","ama":"Chang HC, Conroy J, Tan Z, Zheng DW. Cutting planarians: Planar emulators for string graphs. In: 58th Annual ACM Symposium on Theory of Computing. Association for Computing Machinery; 2026:2140-2151. doi:10.1145/3798129.3800917","ieee":"H. C. Chang, J. Conroy, Z. Tan, and D. W. Zheng, “Cutting planarians: Planar emulators for string graphs,” in 58th Annual ACM Symposium on Theory of Computing, Salt Lake City, UT, United States, 2026, pp. 2140–2151.","short":"H.C. Chang, J. Conroy, Z. Tan, D.W. Zheng, in:, 58th Annual ACM Symposium on Theory of Computing, Association for Computing Machinery, 2026, pp. 2140–2151."},"das_tickbox":"0","oa_version":"Published Version","type":"conference","external_id":{"arxiv":["2510.21700"]},"month":"06","abstract":[{"lang":"eng","text":"In this paper we construct distance sketches for intersection graphs of arbitrary path-connected regions in the plane (known as the string graphs) in the constant and 1+ε distortion regimes. Furthermore, the distance sketches themselves are planar graphs. First, we show that every unweighted string graph G has an O(1)-distortion planar emulator: that is, there exists an edge-weighted planar graph H containing every vertex in G, such that every pair of vertices (u,v) satisfies δG(u,v) ≤ δH(u,v) ≤ O(1) · δG(u,v). Furthermore, we show that for any constant ε > 0, there is an edge-weighted planar graph H′ such that every pair of vertices (u,v) satisfies δG(u,v) ≤ δH′(u,v) ≤ (1+ε) · δG(u,v) + O(ε−4polylogn). No previous constructions of sparse distance sketches were known even for intersection graphs of simple shapes like axis-parallel rectangles or fat convex polygons.\r\nAs applications, we construct the first (1+ε, +O(1)) mixed-distortion tree cover and distance oracle for arbitrary string graphs, as well as the first additive +(εΔ+O(1))-distortion embedding of string graphs G with diameter Δ into graphs of constant treewidth O(ε−4)."}],"researchdata_availability":"no","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_updated":"2026-07-06T10:25:23Z","fulldoi":"https://doi.org/10.1145/3798129.3800917","publication_status":"published","has_accepted_license":"1","article_processing_charge":"No","department":[{"_id":"MoHe"}]},{"scopus_import":"1","file":[{"content_type":"application/pdf","file_name":"2026_EarthSystDynam_Yoon.pdf","date_updated":"2026-02-23T10:26:29Z","date_created":"2026-02-23T10:26:29Z","file_size":2068229,"success":1,"checksum":"6c3669c463731ad7c484b2990eb8ee0d","file_id":"21348","access_level":"open_access","creator":"dernst","relation":"main_file"}],"publisher":"Copernicus Publications","publication_identifier":{"eissn":["2190-4987"]},"article_type":"original","author":[{"last_name":"Yoon","full_name":"Yoon, Arim","first_name":"Arim"},{"first_name":"Cathy","last_name":"Hohenegger","full_name":"Hohenegger, Cathy"},{"last_name":"Bao","full_name":"Bao, Jiawei","id":"bb9a7399-fefd-11ed-be3c-ae648fd1d160","first_name":"Jiawei"},{"first_name":"Lukas","last_name":"Brunner","full_name":"Brunner, Lukas"}],"DOAJ_listed":"1","quality_controlled":"1","title":"Extreme events in the Amazon after deforestation","_id":"21233","page":"167-179","date_created":"2026-02-16T10:44:58Z","file_date_updated":"2026-02-23T10:26:29Z","language":[{"iso":"eng"}],"OA_place":"publisher","year":"2026","intvolume":" 17","oa":1,"volume":17,"publication":"Earth System Dynamics","day":"04","acknowledgement":"AY acknowledges funding by the CLICCS centre of excellence subproject A3 funded by DFG. We thank the German Climate Computing Center DKRZ for providing computing resources and the Integrated Climate Data Center (ICDC), the Center for Earth System Research and Sustainability (CEN), University of Hamburg, for supporting the IMERG data. In addition, we would like to thank Jana Sillmann for suggesting the analysis of heat stress indices and Keno Riechers for providing a thorough internal review of the initial manuscript at the Max Planck Institute for Meteorology. Open Access funding is enabled and organized by Projekt DEAL. This research has been supported by the Deutsche Forschungsgemeinschaft (grant no. CLICCS 390683824 (A3)). The article processing charges for this open-access publication were covered by the Max Planck Society.","PlanS_conform":"1","abstract":[{"text":"Potential self-perpetuating dieback of the Amazon rain forest has been a topic of concern. The concern is that initial deforestation could critically impair the forest’s water recycling capacities, further harming the remaining forest through reduced annual precipitation. Many studies have focused on annual mean precipitation changes, due to its widespread perception as a central control on the Amazon rain forest’s stability. However, the impact of deforestation goes beyond changes in the annual mean precipitation. Yet, global coarse-resolution climate models are not well suited to investigate changes in short-duration and localized events due to their coarse resolution. Here, we circumvent these issues by analyzing a full-deforestation scenario simulated by a global storm-resolving model. We focus on changes in the tail of the hourly distribution of precipitation, temperature, and wind. Hourly precipitation becomes more extreme in the absence of the forest than in an intact forest, with an increased occurrence of both no rain and intense rainfall. These changes are driven by enhanced moisture convergence that strengthens vertical velocity. On average, the near-surface temperature rises significantly by about 3.84 °C, and the daily minimum temperature after deforestation becomes similar to the daily maximum temperature before deforestation. Except for wet-bulb temperature, human heat stress indicators shift to more severe levels, with implications for health and a significant reduction in work productivity. Finally, the mean 10 m wind speed intensifies by a factor of four, with the 99th percentile wind speed doubling. To summarize, our findings, while based on an idealized case, provide a stark warning of the effects of continuing deforestation of the Amazon.","lang":"eng"}],"month":"02","type":"journal_article","das_tickbox":"1","oa_version":"Published Version","citation":{"ista":"Yoon A, Hohenegger C, Bao J, Brunner L. 2026. Extreme events in the Amazon after deforestation. Earth System Dynamics. 17(1), 167–179.","chicago":"Yoon, Arim, Cathy Hohenegger, Jiawei Bao, and Lukas Brunner. “Extreme Events in the Amazon after Deforestation.” Earth System Dynamics. Copernicus Publications, 2026. https://doi.org/10.5194/esd-17-167-2026.","ama":"Yoon A, Hohenegger C, Bao J, Brunner L. Extreme events in the Amazon after deforestation. Earth System Dynamics. 2026;17(1):167-179. doi:10.5194/esd-17-167-2026","short":"A. Yoon, C. Hohenegger, J. Bao, L. Brunner, Earth System Dynamics 17 (2026) 167–179.","ieee":"A. Yoon, C. Hohenegger, J. Bao, and L. Brunner, “Extreme events in the Amazon after deforestation,” Earth System Dynamics, vol. 17, no. 1. Copernicus Publications, pp. 167–179, 2026.","mla":"Yoon, Arim, et al. “Extreme Events in the Amazon after Deforestation.” Earth System Dynamics, vol. 17, no. 1, Copernicus Publications, 2026, pp. 167–79, doi:10.5194/esd-17-167-2026.","apa":"Yoon, A., Hohenegger, C., Bao, J., & Brunner, L. (2026). Extreme events in the Amazon after deforestation. Earth System Dynamics. Copernicus Publications. https://doi.org/10.5194/esd-17-167-2026"},"ddc":["550"],"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","image":"/images/cc_by.png"},"date_published":"2026-02-04T00:00:00Z","OA_type":"gold","doi":"10.5194/esd-17-167-2026","status":"public","department":[{"_id":"CaMu"}],"has_accepted_license":"1","article_processing_charge":"Yes (via OA deal)","date_updated":"2026-07-06T12:55:02Z","fulldoi":"https://doi.org/10.5194/esd-17-167-2026","issue":"1","publication_status":"published","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87"},{"oa":1,"intvolume":" 706","year":"2026","language":[{"iso":"eng"}],"OA_place":"publisher","PlanS_conform":"1","arxiv":1,"day":"01","acknowledgement":"We thank Lars Bildsten for valuable insights and discussions. We acknowledge with thanks the variable star observations from the\r\nAAVSO International Database contributed by observers worldwide and used in this research. We thank the members of the Spanish Observers of Supernovae\r\n(ObSN) group for their valuable photometric contributions. This research was\r\nsupported by Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy – EXC 2121 “Quantum Universe”\r\n– 390833306. Co-funded by the European Union (ERC, CompactBINARIES,\r\n101078773). Views and opinions expressed are however those of the author(s)\r\nonly and do not necessarily reflect those of the European Union or the European Research Council. Neither the European Union nor the granting authority\r\ncan be held responsible for them. DB acknowledges support from the São Paulo\r\nResearch Foundation (FAPESP), Brazil, Process Numbers #2024/03736-2 and\r\n#2025/00817-4. MRS is supported by Fondecyt (grant 1221059). MJG acknowledges support from the European Research Council through ERC Advanced\r\nGrant No. 101054731, from the National Aeronautics and Space Administration under grants 80NSSC24K0436, 80NSSC22K0479, and 80NSSC24K0380,\r\nand from the National Science Foundation under grant AST-2205736. PJG\r\nis supported by NRF SARChI grant 111692. PR-G acknowledges support by\r\nthe Agencia Estatal de Investigación del Ministerio de Ciencia e Innovación\r\n(MCIN/AEI) and the European Regional Development Fund (ERDF) under grant\r\nPID2021–124879NB–I00. DS is supported by the UK Science and Technology Facilities Council (STFC, grant numbers ST/T007184/1, ST/T003103/1,\r\nand ST/T000406/1). OT acknowledges Proyectos Internos USM 2025, PI-LII2025-03. GT was supported by grants IN109723 from the Programa de Apoyo a\r\nProyectos de Investigación e Innovación Tecnológica (PAPIIT). This project has\r\nreceived funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant agreement No. 101020057).","publication":"Astronomy & Astrophysics","volume":706,"quality_controlled":"1","title":"The evolutionary history of ultra-compact accreting binaries: I. Chemical abundances and the formation channel of the eclipsing AM CVn system ZTF J225237.05-051917.4 from HST spectroscopy","author":[{"first_name":"W.","full_name":"Yu, W.","last_name":"Yu"},{"full_name":"Pala, A. F.","last_name":"Pala","first_name":"A. F."},{"full_name":"Kupfer, T.","last_name":"Kupfer","first_name":"T."},{"last_name":"Gänsicke","full_name":"Gänsicke, B. T.","first_name":"B. T."},{"first_name":"D.","full_name":"Koester, D.","last_name":"Koester"},{"full_name":"Belloni, D.","last_name":"Belloni","first_name":"D."},{"last_name":"Wong","full_name":"Wong, T. L.S.","first_name":"T. L.S."},{"full_name":"Schreiber, M. R.","last_name":"Schreiber","first_name":"M. R."},{"first_name":"Joannes C","full_name":"van Roestel, Joannes C","last_name":"van Roestel","id":"4d122fc8-6083-11f0-87a5-97d68b860333"},{"full_name":"Brown, A. J.","last_name":"Brown","first_name":"A. J."},{"full_name":"Waagen, E. O.","last_name":"Waagen","first_name":"E. O."},{"last_name":"González-Carballo","full_name":"González-Carballo, J. L.","first_name":"J. L."},{"first_name":"S.","full_name":"Bednarz, S.","last_name":"Bednarz"},{"full_name":"Bernacki, K.","last_name":"Bernacki","first_name":"K."},{"last_name":"De Martino","full_name":"De Martino, D.","first_name":"D."},{"first_name":"E.","last_name":"Fernández Mañanes","full_name":"Fernández Mañanes, E."},{"first_name":"R.","last_name":"González Farfán","full_name":"González Farfán, R."},{"first_name":"M. J.","full_name":"Green, M. J.","last_name":"Green"},{"last_name":"Groot","full_name":"Groot, P. J.","first_name":"P. J."},{"last_name":"Hambsch","full_name":"Hambsch, F. J.","first_name":"F. J."},{"first_name":"C.","last_name":"Knigge","full_name":"Knigge, C."},{"last_name":"Martin-Velasco","full_name":"Martin-Velasco, J. L.","first_name":"J. L."},{"first_name":"M.","last_name":"Morales-Aimar","full_name":"Morales-Aimar, M."},{"first_name":"G.","full_name":"Myers, G.","last_name":"Myers"},{"full_name":"Naves Nogues, R.","last_name":"Naves Nogues","first_name":"R."},{"first_name":"R.","full_name":"Poggiani, R.","last_name":"Poggiani"},{"full_name":"Popowicz, A.","last_name":"Popowicz","first_name":"A."},{"full_name":"Ramsay, G.","last_name":"Ramsay","first_name":"G."},{"last_name":"Reina-Lorenz","full_name":"Reina-Lorenz, E.","first_name":"E."},{"first_name":"P.","full_name":"Rodríguez-Gil, P.","last_name":"Rodríguez-Gil"},{"first_name":"J. L.","last_name":"Salto-González","full_name":"Salto-González, J. L."},{"full_name":"Sion, E. M.","last_name":"Sion","first_name":"E. M."},{"full_name":"Steeghs, D.","last_name":"Steeghs","first_name":"D."},{"full_name":"Szkody, P.","last_name":"Szkody","first_name":"P."},{"first_name":"O.","last_name":"Toloza","full_name":"Toloza, O."},{"first_name":"G.","last_name":"Tovmassian","full_name":"Tovmassian, G."}],"article_type":"original","publisher":"EDP Sciences","publication_identifier":{"issn":["0004-6361"],"eissn":["1432-0746"]},"scopus_import":"1","file":[{"success":1,"checksum":"2faec710fd04f927aa43deb57e35c9b2","file_id":"21227","access_level":"open_access","creator":"dernst","relation":"main_file","content_type":"application/pdf","file_name":"2026_AstronomyAstrophysics_Yu.pdf","date_updated":"2026-02-16T09:33:56Z","date_created":"2026-02-16T09:33:56Z","file_size":4020466}],"date_created":"2026-02-08T23:02:49Z","_id":"21160","file_date_updated":"2026-02-16T09:33:56Z","has_accepted_license":"1","article_processing_charge":"No","department":[{"_id":"IlCa"}],"article_number":"A14","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","fulldoi":"https://doi.org/10.1051/0004-6361/202557568","date_updated":"2026-07-08T06:38:46Z","publication_status":"published","das_tickbox":"1","oa_version":"Published Version","external_id":{"arxiv":["2512.04147"]},"type":"journal_article","month":"02","abstract":[{"lang":"eng","text":"Context. AM Canum Venaticorum (AM CVn) stars are ultra-compact binary systems composed of a white dwarf primary accreting from a hydrogen-deficient donor. They play a crucial role in astrophysics as potential progenitors of Type Ia supernovae and as laboratories for gravitational wave studies. However, their formation and evolutionary history remain incomplete. Three formation channels have been discussed in the literature: the white dwarf, He-star, and cataclysmic variable channels.\r\n\r\nAims. The chemical composition of the accretor atmosphere reflects the material transferred from the donor. In this work we took the first accurate measurements of the fundamental parameters of the accreting white dwarf in ZTF J225237.05−051917.4, including the abundances of key elements such as carbon, nitrogen, and silicon, by analysing ultraviolet spectra obtained with the Hubble Space Telescope (HST). These measurements provide new insight into the evolutionary history of the system and, together with existing optical observations, establish it as a benchmark to develop our pipeline, paving the way for its application to a larger sample of AM CVn systems.\r\n\r\nMethods. We determined the binary parameters through photometric analysis and constrained the atmospheric parameters of the white dwarf accretor, including its effective temperature, surface gravity, and chemical abundances, by fitting the HST ultraviolet spectrum with synthetic spectral models. We then inferred the system’s formation channel by comparing the results with theoretical evolutionary models.\r\n\r\nResults. According to our measurements, the accretor’s effective temperature (Teff) is 23 300 ± 600 K and the surface gravity (log g) is 8.4 ± 0.3, which imply an accretor mass (MWD) of 0.86 ± 0.16 M⊙. We find a high nitrogen-to-carbon abundance ratio by mass of > 153.\r\n\r\nConclusions. The accretor is significantly hotter than previous estimates based on simplified blackbody fits to the spectral energy distribution, underscoring the importance of detailed spectral modelling for accurately determining system parameters. Our results show that ultraviolet spectroscopy is well suited to constraining the formation channels of AM CVn systems. Of the three proposed formation channels, the He-star channel can be excluded given the high nitrogen-to-carbon ratio. Our results are consistent with both the white dwarf and cataclysmic variable channels."}],"status":"public","OA_type":"diamond","doi":"10.1051/0004-6361/202557568","date_published":"2026-02-01T00:00:00Z","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","image":"/images/cc_by.png"},"citation":{"mla":"Yu, W., et al. “The Evolutionary History of Ultra-Compact Accreting Binaries: I. Chemical Abundances and the Formation Channel of the Eclipsing AM CVn System ZTF J225237.05-051917.4 from HST Spectroscopy.” Astronomy & Astrophysics, vol. 706, A14, EDP Sciences, 2026, doi:10.1051/0004-6361/202557568.","apa":"Yu, W., Pala, A. F., Kupfer, T., Gänsicke, B. T., Koester, D., Belloni, D., … Tovmassian, G. (2026). The evolutionary history of ultra-compact accreting binaries: I. Chemical abundances and the formation channel of the eclipsing AM CVn system ZTF J225237.05-051917.4 from HST spectroscopy. Astronomy & Astrophysics. EDP Sciences. https://doi.org/10.1051/0004-6361/202557568","ieee":"W. Yu et al., “The evolutionary history of ultra-compact accreting binaries: I. Chemical abundances and the formation channel of the eclipsing AM CVn system ZTF J225237.05-051917.4 from HST spectroscopy,” Astronomy & Astrophysics, vol. 706. EDP Sciences, 2026.","short":"W. Yu, A.F. Pala, T. Kupfer, B.T. Gänsicke, D. Koester, D. Belloni, T.L.S. Wong, M.R. Schreiber, J.C. van Roestel, A.J. Brown, E.O. Waagen, J.L. González-Carballo, S. Bednarz, K. Bernacki, D. De Martino, E. Fernández Mañanes, R. González Farfán, M.J. Green, P.J. Groot, F.J. Hambsch, C. Knigge, J.L. Martin-Velasco, M. Morales-Aimar, G. Myers, R. Naves Nogues, R. Poggiani, A. Popowicz, G. Ramsay, E. Reina-Lorenz, P. Rodríguez-Gil, J.L. Salto-González, E.M. Sion, D. Steeghs, P. Szkody, O. Toloza, G. Tovmassian, Astronomy & Astrophysics 706 (2026).","ista":"Yu W, Pala AF, Kupfer T, Gänsicke BT, Koester D, Belloni D, Wong TLS, Schreiber MR, van Roestel JC, Brown AJ, Waagen EO, González-Carballo JL, Bednarz S, Bernacki K, De Martino D, Fernández Mañanes E, González Farfán R, Green MJ, Groot PJ, Hambsch FJ, Knigge C, Martin-Velasco JL, Morales-Aimar M, Myers G, Naves Nogues R, Poggiani R, Popowicz A, Ramsay G, Reina-Lorenz E, Rodríguez-Gil P, Salto-González JL, Sion EM, Steeghs D, Szkody P, Toloza O, Tovmassian G. 2026. The evolutionary history of ultra-compact accreting binaries: I. Chemical abundances and the formation channel of the eclipsing AM CVn system ZTF J225237.05-051917.4 from HST spectroscopy. Astronomy & Astrophysics. 706, A14.","chicago":"Yu, W., A. F. Pala, T. Kupfer, B. T. Gänsicke, D. Koester, D. Belloni, T. L.S. Wong, et al. “The Evolutionary History of Ultra-Compact Accreting Binaries: I. Chemical Abundances and the Formation Channel of the Eclipsing AM CVn System ZTF J225237.05-051917.4 from HST Spectroscopy.” Astronomy & Astrophysics. EDP Sciences, 2026. https://doi.org/10.1051/0004-6361/202557568.","ama":"Yu W, Pala AF, Kupfer T, et al. The evolutionary history of ultra-compact accreting binaries: I. Chemical abundances and the formation channel of the eclipsing AM CVn system ZTF J225237.05-051917.4 from HST spectroscopy. Astronomy & Astrophysics. 2026;706. doi:10.1051/0004-6361/202557568"},"ddc":["520"]},{"department":[{"_id":"JoMa"},{"_id":"GradSch"}],"article_processing_charge":"No","has_accepted_license":"1","article_number":"A147","publication_status":"published","date_updated":"2026-07-08T06:38:23Z","fulldoi":"https://doi.org/10.1051/0004-6361/202555596","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","external_id":{"arxiv":["2505.09542"]},"type":"journal_article","das_tickbox":"1","oa_version":"Published Version","abstract":[{"text":"The abundant population of little red dots (LRDs), compact objects with red UV to optical colors and broad Balmer lines at high redshift, is revealing new insights into the properties of early active galactic nuclei (AGN). Perhaps the most surprising features of this population are the presence of Balmer absorption and ubiquitous strong Balmer breaks. Recent models link these features to an active supermassive black hole (SMBH) cocooned in very dense gas (NH ∼ 1024 cm−2). We present a stringent test of such models using VLT/MUSE observations of A2744-45924, the most luminous LRD known to date (LHα ≈ 1044 erg s−1), located behind the Abell-2744 lensing cluster at z = 4.464 (μ = 1.8). We detect a moderately extended Lyα nebula (h ≈ 5.7 pkpc), spatially offset from the point-like Hα seen by JWST by ≈1.6 pkpc. The Lyα emission is narrow (FWHM = 270 ± 15 km s−1), and faint (Lyα = 0.07Hα) compared to Lyα nebulae typically observed around quasars of similar luminosity. We detect compact N IV]λ1486 emission, spatially aligned with Hα, and a spatial shift in the far-UV continuum matching the Lyα offset. We discuss that Hα and Lyα have distinct physical origins: Hα originates from the AGN, while Lyα is powered by star formation. In the environment of A2744-45924, we identified four extended Lyα halos (Δz < 0.02, Δr < 100 pkpc). Their Lyα luminosities match the expectations based on Hα emission, and show no evidence for radiation from A2744-45924 affecting its surroundings. The lack of strong, compact, and broad Lyα and the absence of a luminous extended halo, suggest that the UV AGN light is obscured by dense gas cloaking the SMBH with a covering factor close to unity.","lang":"eng"}],"month":"01","doi":"10.1051/0004-6361/202555596","OA_type":"diamond","status":"public","project":[{"name":"Young galaxies as tracers and agents of cosmic reionization","grant_number":"101076224","_id":"bd9b2118-d553-11ed-ba76-db24564edfea"}],"ddc":["520"],"citation":{"apa":"Torralba Torregrosa, A., Matthee, J. J., Pezzulli, G., Urrutia, T., Gronke, M., Mascia, S., … Kotiwale, G. (2026). A weak Ly α halo for an extremely bright little red dot. Indications of enshrouded supermassive black hole growth. Astronomy & Astrophysics. EDP Sciences. https://doi.org/10.1051/0004-6361/202555596","mla":"Torralba Torregrosa, Alberto, et al. “A Weak Ly α Halo for an Extremely Bright Little Red Dot. Indications of Enshrouded Supermassive Black Hole Growth.” Astronomy & Astrophysics, vol. 705, A147, EDP Sciences, 2026, doi:10.1051/0004-6361/202555596.","short":"A. Torralba Torregrosa, J.J. Matthee, G. Pezzulli, T. Urrutia, M. Gronke, S. Mascia, F. D’Eugenio, C. Di Cesare, A.C. Eilers, J.E. Greene, E. Iani, Y. Ishikawa, R. Mackenzie, R.P. Naidu, B. Navarrete, G. Kotiwale, Astronomy & Astrophysics 705 (2026).","ieee":"A. Torralba Torregrosa et al., “A weak Ly α halo for an extremely bright little red dot. Indications of enshrouded supermassive black hole growth,” Astronomy & Astrophysics, vol. 705. EDP Sciences, 2026.","ista":"Torralba Torregrosa A, Matthee JJ, Pezzulli G, Urrutia T, Gronke M, Mascia S, D’Eugenio F, Di Cesare C, Eilers AC, Greene JE, Iani E, Ishikawa Y, Mackenzie R, Naidu RP, Navarrete B, Kotiwale G. 2026. A weak Ly α halo for an extremely bright little red dot. Indications of enshrouded supermassive black hole growth. Astronomy & Astrophysics. 705, A147.","chicago":"Torralba Torregrosa, Alberto, Jorryt J Matthee, Gabriele Pezzulli, Tanya Urrutia, Max Gronke, Sara Mascia, Francesco D’Eugenio, et al. “A Weak Ly α Halo for an Extremely Bright Little Red Dot. Indications of Enshrouded Supermassive Black Hole Growth.” Astronomy & Astrophysics. EDP Sciences, 2026. https://doi.org/10.1051/0004-6361/202555596.","ama":"Torralba Torregrosa A, Matthee JJ, Pezzulli G, et al. A weak Ly α halo for an extremely bright little red dot. Indications of enshrouded supermassive black hole growth. Astronomy & Astrophysics. 2026;705. doi:10.1051/0004-6361/202555596"},"date_published":"2026-01-14T00:00:00Z","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","image":"/images/cc_by.png"},"intvolume":" 705","oa":1,"OA_place":"publisher","corr_author":"1","language":[{"iso":"eng"}],"year":"2026","acknowledgement":"We thank the anonymous referee for constructive and useful comments. We thank Sebastiano Cantalupo for comments on the draft. Based on observations collected at the European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme 114.27M6.001. Funded by the European Union (ERC, AGENTS, 101076224). Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Research Council. Neither the European Union nor the granting authority can be held responsible for them. We acknowledge funding from JWST program GO-3516. This work is based in part on observations made with the NASA/ESA/CSA James Webb Space Telescope. The data were obtained from the Mikulski Archive for Space Telescopes at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-03127 for JWST. These observations are associated with program #3516. MG thanks the Max Planck Society for support through the MPRG. FDE acknowledges support by the Science and Technology Facilities Council (STFC), by the ERC through Advanced Grant 695671 “QUENCH”, and by the UKRI Frontier Research grant RISEandFALL. TU acknowledges funding from the ERC-AdG grant SPECMAP-CGM, GA 101020943. GK acknowledges support from the MERAC foundation.","day":"14","arxiv":1,"PlanS_conform":"1","publication":"Astronomy & Astrophysics","volume":705,"author":[{"last_name":"Torralba Torregrosa","id":"018f0249-0e87-11f0-b167-cbce08fbd541","full_name":"Torralba Torregrosa, Alberto","first_name":"Alberto","orcid":"0000-0001-5586-6950"},{"last_name":"Matthee","full_name":"Matthee, Jorryt J","id":"7439a258-f3c0-11ec-9501-9df22fe06720","orcid":"0000-0003-2871-127X","first_name":"Jorryt J"},{"first_name":"Gabriele","full_name":"Pezzulli, Gabriele","last_name":"Pezzulli"},{"full_name":"Urrutia, Tanya","last_name":"Urrutia","first_name":"Tanya"},{"full_name":"Gronke, Max","last_name":"Gronke","first_name":"Max"},{"last_name":"Mascia","full_name":"Mascia, Sara","id":"edaf889c-c7cd-11ef-ab1b-bb28c431bd29","first_name":"Sara"},{"last_name":"D’Eugenio","full_name":"D’Eugenio, Francesco","first_name":"Francesco"},{"id":"2d002343-372f-11ef-98ec-a164d20427cb","full_name":"Di Cesare, Claudia","last_name":"Di Cesare","first_name":"Claudia"},{"full_name":"Eilers, Anna Christina","last_name":"Eilers","first_name":"Anna Christina"},{"full_name":"Greene, Jenny E.","last_name":"Greene","first_name":"Jenny E."},{"first_name":"Edoardo","orcid":"0000-0001-8386-3546","last_name":"Iani","full_name":"Iani, Edoardo","id":"4053390a-6b68-11ef-9828-a3b8adef8d0a"},{"last_name":"Ishikawa","full_name":"Ishikawa, Yuzo","first_name":"Yuzo"},{"last_name":"Mackenzie","full_name":"Mackenzie, Ruari","first_name":"Ruari"},{"full_name":"Naidu, Rohan P.","last_name":"Naidu","first_name":"Rohan P."},{"full_name":"Navarrete, Benjamín","last_name":"Navarrete","id":"aa14a535-50c9-11ef-b52e-e0c373d10148","first_name":"Benjamín"},{"first_name":"Gauri","id":"1438afc8-1ff6-11ee-9fa6-cd4a75d66875","full_name":"Kotiwale, Gauri","last_name":"Kotiwale"}],"article_type":"original","title":"A weak Ly α halo for an extremely bright little red dot. 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