[{"publication":"New Journal of Physics","issue":"12","publication_identifier":{"issn":["1367-2630"]},"doi":"10.1088/1367-2630/ac4124","article_number":"123042","year":"2021","date_created":"2022-01-16T23:01:28Z","ddc":["530"],"has_accepted_license":"1","file":[{"date_created":"2022-01-17T10:01:58Z","content_type":"application/pdf","file_name":"2021_NewJourPhys_Ghazaryan.pdf","creator":"cchlebak","success":1,"file_id":"10632","relation":"main_file","checksum":"0c3cb6816242fa8afd1cc87a5fe77821","access_level":"open_access","file_size":2533102,"date_updated":"2022-01-17T10:01:58Z"}],"quality_controlled":"1","corr_author":"1","volume":23,"author":[{"first_name":"Areg","last_name":"Ghazaryan","full_name":"Ghazaryan, Areg","orcid":"0000-0001-9666-3543","id":"4AF46FD6-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Emilian M.","last_name":"Nica","full_name":"Nica, Emilian M."},{"full_name":"Erten, Onur","last_name":"Erten","first_name":"Onur"},{"full_name":"Ghaemi, Pouyan","first_name":"Pouyan","last_name":"Ghaemi"}],"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","title":"Shadow surface states in topological Kondo insulators","abstract":[{"lang":"eng","text":"The surface states of 3D topological insulators in general have negligible quantum oscillations (QOs) when the chemical potential is tuned to the Dirac points. In contrast, we find that topological Kondo insulators (TKIs) can support surface states with an arbitrarily large Fermi surface (FS) when the chemical potential is pinned to the Dirac point. We illustrate that these FSs give rise to finite-frequency QOs, which can become comparable to the extremal area of the unhybridized bulk bands. We show that this occurs when the crystal symmetry is lowered from cubic to tetragonal in a minimal two-orbital model. We label such surface modes as 'shadow surface states'. Moreover, we show that the sufficient next-nearest neighbor out-of-plane hybridization leading to shadow surface states can be self-consistently stabilized for tetragonal TKIs. Consequently, shadow surface states provide an important example of high-frequency QOs beyond the context of cubic TKIs."}],"publication_status":"published","external_id":{"arxiv":["2012.11625"],"isi":["000734063700001"]},"article_processing_charge":"No","status":"public","day":"23","ec_funded":1,"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"project":[{"grant_number":"754411","_id":"260C2330-B435-11E9-9278-68D0E5697425","name":"ISTplus - Postdoctoral Fellowships","call_identifier":"H2020"}],"citation":{"apa":"Ghazaryan, A., Nica, E. M., Erten, O., &#38; Ghaemi, P. (2021). Shadow surface states in topological Kondo insulators. <i>New Journal of Physics</i>. IOP Publishing. <a href=\"https://doi.org/10.1088/1367-2630/ac4124\">https://doi.org/10.1088/1367-2630/ac4124</a>","chicago":"Ghazaryan, Areg, Emilian M. Nica, Onur Erten, and Pouyan Ghaemi. “Shadow Surface States in Topological Kondo Insulators.” <i>New Journal of Physics</i>. IOP Publishing, 2021. <a href=\"https://doi.org/10.1088/1367-2630/ac4124\">https://doi.org/10.1088/1367-2630/ac4124</a>.","mla":"Ghazaryan, Areg, et al. “Shadow Surface States in Topological Kondo Insulators.” <i>New Journal of Physics</i>, vol. 23, no. 12, 123042, IOP Publishing, 2021, doi:<a href=\"https://doi.org/10.1088/1367-2630/ac4124\">10.1088/1367-2630/ac4124</a>.","short":"A. Ghazaryan, E.M. Nica, O. Erten, P. Ghaemi, New Journal of Physics 23 (2021).","ieee":"A. Ghazaryan, E. M. Nica, O. Erten, and P. Ghaemi, “Shadow surface states in topological Kondo insulators,” <i>New Journal of Physics</i>, vol. 23, no. 12. IOP Publishing, 2021.","ama":"Ghazaryan A, Nica EM, Erten O, Ghaemi P. Shadow surface states in topological Kondo insulators. <i>New Journal of Physics</i>. 2021;23(12). doi:<a href=\"https://doi.org/10.1088/1367-2630/ac4124\">10.1088/1367-2630/ac4124</a>","ista":"Ghazaryan A, Nica EM, Erten O, Ghaemi P. 2021. Shadow surface states in topological Kondo insulators. New Journal of Physics. 23(12), 123042."},"_id":"10628","scopus_import":"1","acknowledgement":"PG acknowledges support from National Science Foundation Awards No. DMR-1824265 for this work. AG acknowledges support from the European Union's Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement No. 754411. EMN is supported by ASU startup grant. OE is in part supported by NSF-DMR-1904716.","type":"journal_article","article_type":"original","oa_version":"Published Version","intvolume":"        23","department":[{"_id":"MiLe"}],"publisher":"IOP Publishing","arxiv":1,"date_updated":"2025-04-14T07:43:48Z","language":[{"iso":"eng"}],"month":"12","date_published":"2021-12-23T00:00:00Z","oa":1,"file_date_updated":"2022-01-17T10:01:58Z","isi":1},{"article_number":"42","date_created":"2022-01-16T23:01:28Z","year":"2021","publication":"41st IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science","publication_identifier":{"isbn":["978-3-9597-7215-0"],"issn":["1868-8969"]},"doi":"10.4230/LIPIcs.FSTTCS.2021.42","file":[{"checksum":"71141acdeffa9056f24d6dbef952d254","relation":"main_file","access_level":"open_access","date_updated":"2022-01-17T10:36:08Z","file_size":891566,"file_id":"10633","creator":"cchlebak","success":1,"date_created":"2022-01-17T10:36:08Z","file_name":"2021_LIPIcs_Chatterjee.pdf","content_type":"application/pdf"}],"quality_controlled":"1","corr_author":"1","ddc":["000"],"conference":{"name":"FSTTCS: Foundations of Software Technology and Theoretical Computer Science","start_date":"2021-12-15","location":"Virtual","end_date":"2021-12-17"},"has_accepted_license":"1","volume":213,"author":[{"first_name":"Krishnendu","last_name":"Chatterjee","id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-4561-241X","full_name":"Chatterjee, Krishnendu"},{"first_name":"Rasmus","last_name":"Ibsen-Jensen","full_name":"Ibsen-Jensen, Rasmus","orcid":"0000-0003-4783-0389","id":"3B699956-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Pavlogiannis","first_name":"Andreas","full_name":"Pavlogiannis, Andreas","id":"49704004-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-8943-0722"}],"user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","publication_status":"published","abstract":[{"lang":"eng","text":"Product graphs arise naturally in formal verification and program analysis. For example, the analysis of two concurrent threads requires the product of two component control-flow graphs, and for language inclusion of deterministic automata the product of two automata is constructed. In many cases, the component graphs have constant treewidth, e.g., when the input contains control-flow graphs of programs. We consider the algorithmic analysis of products of two constant-treewidth graphs with respect to three classic specification languages, namely, (a) algebraic properties, (b) mean-payoff properties, and (c) initial credit for energy properties.\r\nOur main contributions are as follows. Consider a graph G that is the product of two constant-treewidth graphs of size n each. First, given an idempotent semiring, we present an algorithm that computes the semiring transitive closure of G in time Õ(n⁴). Since the output has size Θ(n⁴), our algorithm is optimal (up to polylog factors). Second, given a mean-payoff objective, we present an O(n³)-time algorithm for deciding whether the value of a starting state is non-negative, improving the previously known O(n⁴) bound. Third, given an initial credit for energy objective, we present an O(n⁵)-time algorithm for computing the minimum initial credit for all nodes of G, improving the previously known O(n⁸) bound. At the heart of our approach lies an algorithm for the efficient construction of strongly-balanced tree decompositions of constant-treewidth graphs. Given a constant-treewidth graph G' of n nodes and a positive integer λ, our algorithm constructs a binary tree decomposition of G' of width O(λ) with the property that the size of each subtree decreases geometrically with rate (1/2 + 2^{-λ})."}],"article_processing_charge":"No","title":"Quantitative verification on product graphs of small treewidth","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"status":"public","day":"29","alternative_title":["LIPIcs"],"citation":{"mla":"Chatterjee, Krishnendu, et al. “Quantitative Verification on Product Graphs of Small Treewidth.” <i>41st IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science</i>, vol. 213, 42, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2021, doi:<a href=\"https://doi.org/10.4230/LIPIcs.FSTTCS.2021.42\">10.4230/LIPIcs.FSTTCS.2021.42</a>.","apa":"Chatterjee, K., Ibsen-Jensen, R., &#38; Pavlogiannis, A. (2021). Quantitative verification on product graphs of small treewidth. In <i>41st IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science</i> (Vol. 213). Virtual: Schloss Dagstuhl - Leibniz-Zentrum für Informatik. <a href=\"https://doi.org/10.4230/LIPIcs.FSTTCS.2021.42\">https://doi.org/10.4230/LIPIcs.FSTTCS.2021.42</a>","chicago":"Chatterjee, Krishnendu, Rasmus Ibsen-Jensen, and Andreas Pavlogiannis. “Quantitative Verification on Product Graphs of Small Treewidth.” In <i>41st IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science</i>, Vol. 213. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2021. <a href=\"https://doi.org/10.4230/LIPIcs.FSTTCS.2021.42\">https://doi.org/10.4230/LIPIcs.FSTTCS.2021.42</a>.","ama":"Chatterjee K, Ibsen-Jensen R, Pavlogiannis A. Quantitative verification on product graphs of small treewidth. In: <i>41st IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science</i>. Vol 213. Schloss Dagstuhl - Leibniz-Zentrum für Informatik; 2021. doi:<a href=\"https://doi.org/10.4230/LIPIcs.FSTTCS.2021.42\">10.4230/LIPIcs.FSTTCS.2021.42</a>","ista":"Chatterjee K, Ibsen-Jensen R, Pavlogiannis A. 2021. Quantitative verification on product graphs of small treewidth. 41st IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science. FSTTCS: Foundations of Software Technology and Theoretical Computer Science, LIPIcs, vol. 213, 42.","ieee":"K. Chatterjee, R. Ibsen-Jensen, and A. Pavlogiannis, “Quantitative verification on product graphs of small treewidth,” in <i>41st IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science</i>, Virtual, 2021, vol. 213.","short":"K. Chatterjee, R. Ibsen-Jensen, A. Pavlogiannis, in:, 41st IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2021."},"type":"conference","oa_version":"Published Version","intvolume":"       213","scopus_import":"1","_id":"10629","file_date_updated":"2022-01-17T10:36:08Z","oa":1,"date_updated":"2024-10-09T21:01:23Z","publisher":"Schloss Dagstuhl - Leibniz-Zentrum für Informatik","department":[{"_id":"KrCh"}],"date_published":"2021-11-29T00:00:00Z","language":[{"iso":"eng"}],"month":"11"},{"quality_controlled":"1","file":[{"file_id":"10634","date_updated":"2022-01-17T10:49:03Z","file_size":844224,"relation":"main_file","checksum":"d5a82ba893c3bc5da5914edbb3efb92b","access_level":"open_access","content_type":"application/pdf","file_name":"2021_LIPIcs_Arrighi.pdf","date_created":"2022-01-17T10:49:03Z","creator":"cchlebak","success":1}],"corr_author":"1","ddc":["000"],"conference":{"start_date":"2021-12-15","name":"FSTTCS: Foundations of Software Technology and Theoretical Computer Science","end_date":"2021-12-17","location":"Virtual"},"has_accepted_license":"1","article_number":"34","year":"2021","date_created":"2022-01-16T23:01:29Z","publication":"41st IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science","doi":"10.4230/LIPIcs.FSTTCS.2021.34","publication_identifier":{"isbn":["978-3-9597-7215-0"],"issn":["1868-8969"]},"abstract":[{"lang":"eng","text":"In the Intersection Non-emptiness problem, we are given a list of finite automata A_1, A_2,… , A_m over a common alphabet Σ as input, and the goal is to determine whether some string w ∈ Σ^* lies in the intersection of the languages accepted by the automata in the list. We analyze the complexity of the Intersection Non-emptiness problem under the promise that all input automata accept a language in some level of the dot-depth hierarchy, or some level of the Straubing-Thérien hierarchy. Automata accepting languages from the lowest levels of these hierarchies arise naturally in the context of model checking. We identify a dichotomy in the dot-depth hierarchy by showing that the problem is already NP-complete when all input automata accept languages of the levels B_0 or B_{1/2} and already PSPACE-hard when all automata accept a language from the level B_1. Conversely, we identify a tetrachotomy in the Straubing-Thérien hierarchy. More precisely, we show that the problem is in AC^0 when restricted to level L_0; complete for L or NL, depending on the input representation, when restricted to languages in the level L_{1/2}; NP-complete when the input is given as DFAs accepting a language in L_1 or L_{3/2}; and finally, PSPACE-complete when the input automata accept languages in level L_2 or higher. Moreover, we show that the proof technique used to show containment in NP for DFAs accepting languages in L_1 or L_{3/2} does not generalize to the context of NFAs. To prove this, we identify a family of languages that provide an exponential separation between the state complexity of general NFAs and that of partially ordered NFAs. To the best of our knowledge, this is the first superpolynomial separation between these two models of computation."}],"publication_status":"published","external_id":{"arxiv":["2110.01279"]},"article_processing_charge":"No","title":"On the complexity of intersection non-emptiness for star-free language classes","volume":213,"author":[{"last_name":"Arrighi","first_name":"Emmanuel","full_name":"Arrighi, Emmanuel"},{"full_name":"Fernau, Henning","first_name":"Henning","last_name":"Fernau"},{"full_name":"Hoffmann, Stefan","first_name":"Stefan","last_name":"Hoffmann"},{"first_name":"Markus","last_name":"Holzer","full_name":"Holzer, Markus"},{"last_name":"Jecker","first_name":"Ismael R","id":"85D7C63E-7D5D-11E9-9C0F-98C4E5697425","full_name":"Jecker, Ismael R"},{"full_name":"De Oliveira Oliveira, Mateus","last_name":"De Oliveira Oliveira","first_name":"Mateus"},{"last_name":"Wolf","first_name":"Petra","full_name":"Wolf, Petra"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","project":[{"_id":"260C2330-B435-11E9-9278-68D0E5697425","grant_number":"754411","call_identifier":"H2020","name":"ISTplus - Postdoctoral Fellowships"}],"citation":{"apa":"Arrighi, E., Fernau, H., Hoffmann, S., Holzer, M., Jecker, I. R., De Oliveira Oliveira, M., &#38; Wolf, P. (2021). On the complexity of intersection non-emptiness for star-free language classes. In <i>41st IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science</i> (Vol. 213). Virtual: Schloss Dagstuhl - Leibniz-Zentrum für Informatik. <a href=\"https://doi.org/10.4230/LIPIcs.FSTTCS.2021.34\">https://doi.org/10.4230/LIPIcs.FSTTCS.2021.34</a>","chicago":"Arrighi, Emmanuel, Henning Fernau, Stefan Hoffmann, Markus Holzer, Ismael R Jecker, Mateus De Oliveira Oliveira, and Petra Wolf. “On the Complexity of Intersection Non-Emptiness for Star-Free Language Classes.” In <i>41st IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science</i>, Vol. 213. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2021. <a href=\"https://doi.org/10.4230/LIPIcs.FSTTCS.2021.34\">https://doi.org/10.4230/LIPIcs.FSTTCS.2021.34</a>.","mla":"Arrighi, Emmanuel, et al. “On the Complexity of Intersection Non-Emptiness for Star-Free Language Classes.” <i>41st IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science</i>, vol. 213, 34, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2021, doi:<a href=\"https://doi.org/10.4230/LIPIcs.FSTTCS.2021.34\">10.4230/LIPIcs.FSTTCS.2021.34</a>.","short":"E. Arrighi, H. Fernau, S. Hoffmann, M. Holzer, I.R. Jecker, M. De Oliveira Oliveira, P. Wolf, in:, 41st IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2021.","ieee":"E. Arrighi <i>et al.</i>, “On the complexity of intersection non-emptiness for star-free language classes,” in <i>41st IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science</i>, Virtual, 2021, vol. 213.","ama":"Arrighi E, Fernau H, Hoffmann S, et al. On the complexity of intersection non-emptiness for star-free language classes. In: <i>41st IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science</i>. Vol 213. Schloss Dagstuhl - Leibniz-Zentrum für Informatik; 2021. doi:<a href=\"https://doi.org/10.4230/LIPIcs.FSTTCS.2021.34\">10.4230/LIPIcs.FSTTCS.2021.34</a>","ista":"Arrighi E, Fernau H, Hoffmann S, Holzer M, Jecker IR, De Oliveira Oliveira M, Wolf P. 2021. On the complexity of intersection non-emptiness for star-free language classes. 41st IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science. FSTTCS: Foundations of Software Technology and Theoretical Computer Science, LIPIcs, vol. 213, 34."},"ec_funded":1,"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"day":"29","status":"public","alternative_title":["LIPIcs"],"oa":1,"file_date_updated":"2022-01-17T10:49:03Z","arxiv":1,"publisher":"Schloss Dagstuhl - Leibniz-Zentrum für Informatik","department":[{"_id":"KrCh"}],"date_updated":"2025-05-14T10:53:59Z","language":[{"iso":"eng"}],"month":"11","date_published":"2021-11-29T00:00:00Z","acknowledgement":"We like to thank Lukas Fleischer and Michael Wehar for our discussions. This work started at the Schloss Dagstuhl Event 20483 Moderne Aspekte der Komplexitätstheorie in der Automatentheorie https://www.dagstuhl.de/20483.\r\n","type":"conference","intvolume":"       213","oa_version":"Published Version","_id":"10630","scopus_import":"1"},{"date_created":"2022-01-16T23:01:29Z","year":"2021","article_number":"L061303","doi":"10.1103/PhysRevA.104.L061303","publication_identifier":{"issn":["2469-9926"],"eissn":["2469-9934"]},"issue":"6","publication":"Physical Review A","corr_author":"1","quality_controlled":"1","main_file_link":[{"url":"http://128.84.4.18/abs/2107.00468","open_access":"1"}],"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","author":[{"last_name":"Cherepanov","first_name":"Igor","full_name":"Cherepanov, Igor","id":"339C7E5A-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Bighin","first_name":"Giacomo","orcid":"0000-0001-8823-9777","id":"4CA96FD4-F248-11E8-B48F-1D18A9856A87","full_name":"Bighin, Giacomo"},{"last_name":"Schouder","first_name":"Constant A.","full_name":"Schouder, Constant A."},{"last_name":"Chatterley","first_name":"Adam S.","full_name":"Chatterley, Adam S."},{"full_name":"Albrechtsen, Simon H.","first_name":"Simon H.","last_name":"Albrechtsen"},{"full_name":"Muñoz, Alberto Viñas","first_name":"Alberto Viñas","last_name":"Muñoz"},{"full_name":"Christiansen, Lars","last_name":"Christiansen","first_name":"Lars"},{"first_name":"Henrik","last_name":"Stapelfeldt","full_name":"Stapelfeldt, Henrik"},{"first_name":"Mikhail","last_name":"Lemeshko","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail"}],"volume":104,"article_processing_charge":"No","external_id":{"arxiv":["2107.00468"],"isi":["000739618300001"]},"publication_status":"published","abstract":[{"lang":"eng","text":"We combine experimental and theoretical approaches to explore excited rotational states of molecules embedded in helium nanodroplets using CS2 and I2 as examples. Laser-induced nonadiabatic molecular alignment is employed to measure spectral lines for rotational states extending beyond those initially populated at the 0.37 K droplet temperature. We construct a simple quantum-mechanical model, based on a linear rotor coupled to a single-mode bosonic bath, to determine the rotational energy structure in its entirety. The calculated and measured spectral lines are in good agreement. We show that the effect of the surrounding superfluid on molecular rotation can be rationalized by a single quantity, the angular momentum, transferred from the molecule to the droplet."}],"title":"Excited rotational states of molecules in a superfluid","ec_funded":1,"day":"30","status":"public","citation":{"short":"I. Cherepanov, G. Bighin, C.A. Schouder, A.S. Chatterley, S.H. Albrechtsen, A.V. Muñoz, L. Christiansen, H. Stapelfeldt, M. Lemeshko, Physical Review A 104 (2021).","ieee":"I. Cherepanov <i>et al.</i>, “Excited rotational states of molecules in a superfluid,” <i>Physical Review A</i>, vol. 104, no. 6. American Physical Society, 2021.","ista":"Cherepanov I, Bighin G, Schouder CA, Chatterley AS, Albrechtsen SH, Muñoz AV, Christiansen L, Stapelfeldt H, Lemeshko M. 2021. Excited rotational states of molecules in a superfluid. Physical Review A. 104(6), L061303.","ama":"Cherepanov I, Bighin G, Schouder CA, et al. Excited rotational states of molecules in a superfluid. <i>Physical Review A</i>. 2021;104(6). doi:<a href=\"https://doi.org/10.1103/PhysRevA.104.L061303\">10.1103/PhysRevA.104.L061303</a>","chicago":"Cherepanov, Igor, Giacomo Bighin, Constant A. Schouder, Adam S. Chatterley, Simon H. Albrechtsen, Alberto Viñas Muñoz, Lars Christiansen, Henrik Stapelfeldt, and Mikhail Lemeshko. “Excited Rotational States of Molecules in a Superfluid.” <i>Physical Review A</i>. American Physical Society, 2021. <a href=\"https://doi.org/10.1103/PhysRevA.104.L061303\">https://doi.org/10.1103/PhysRevA.104.L061303</a>.","apa":"Cherepanov, I., Bighin, G., Schouder, C. A., Chatterley, A. S., Albrechtsen, S. H., Muñoz, A. V., … Lemeshko, M. (2021). Excited rotational states of molecules in a superfluid. <i>Physical Review A</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevA.104.L061303\">https://doi.org/10.1103/PhysRevA.104.L061303</a>","mla":"Cherepanov, Igor, et al. “Excited Rotational States of Molecules in a Superfluid.” <i>Physical Review A</i>, vol. 104, no. 6, L061303, American Physical Society, 2021, doi:<a href=\"https://doi.org/10.1103/PhysRevA.104.L061303\">10.1103/PhysRevA.104.L061303</a>."},"project":[{"_id":"26031614-B435-11E9-9278-68D0E5697425","grant_number":"P29902","call_identifier":"FWF","name":"Quantum rotations in the presence of a many-body environment"},{"grant_number":"801770","_id":"2688CF98-B435-11E9-9278-68D0E5697425","name":"Angulon: physics and applications of a new quasiparticle","call_identifier":"H2020"},{"name":"International IST Doctoral Program","call_identifier":"H2020","grant_number":"665385","_id":"2564DBCA-B435-11E9-9278-68D0E5697425"},{"_id":"26986C82-B435-11E9-9278-68D0E5697425","grant_number":"M02641","call_identifier":"FWF","name":"A path-integral approach to composite impurities"}],"oa_version":"Preprint","intvolume":"       104","article_type":"original","type":"journal_article","acknowledgement":"I.C. acknowledges the support by the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie Grant Agreement No. 665385. G.B. acknowledges support from the Austrian Science Fund (FWF), under project No. M2461-N27. M.L. acknowledges support by the Austrian Science Fund (FWF), under project No. P29902-N27, and by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). H.S acknowledges support from the European Research Council-AdG (Project No. 320459, DropletControl) and from The Villum Foundation through a Villum Investigator grant no. 25886.","scopus_import":"1","_id":"10631","isi":1,"oa":1,"date_published":"2021-12-30T00:00:00Z","month":"12","language":[{"iso":"eng"}],"date_updated":"2025-03-31T16:00:55Z","publisher":"American Physical Society","department":[{"_id":"MiLe"}],"arxiv":1},{"day":"15","status":"public","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"ec_funded":1,"citation":{"short":"M. Nardin, J.W. Phillips, W.F. Podlaski, S.W. Keemink, Peer Community Journal 1 (2021).","ieee":"M. Nardin, J. W. Phillips, W. F. Podlaski, and S. W. Keemink, “Nonlinear computations in spiking neural networks through multiplicative synapses,” <i>Peer Community Journal</i>, vol. 1. Peer Community In, 2021.","ista":"Nardin M, Phillips JW, Podlaski WF, Keemink SW. 2021. Nonlinear computations in spiking neural networks through multiplicative synapses. Peer Community Journal. 1, e68.","ama":"Nardin M, Phillips JW, Podlaski WF, Keemink SW. Nonlinear computations in spiking neural networks through multiplicative synapses. <i>Peer Community Journal</i>. 2021;1. doi:<a href=\"https://doi.org/10.24072/pcjournal.69\">10.24072/pcjournal.69</a>","chicago":"Nardin, Michele, James W. Phillips, William F. Podlaski, and Sander W. Keemink. “Nonlinear Computations in Spiking Neural Networks through Multiplicative Synapses.” <i>Peer Community Journal</i>. Peer Community In, 2021. <a href=\"https://doi.org/10.24072/pcjournal.69\">https://doi.org/10.24072/pcjournal.69</a>.","apa":"Nardin, M., Phillips, J. W., Podlaski, W. F., &#38; Keemink, S. W. (2021). Nonlinear computations in spiking neural networks through multiplicative synapses. <i>Peer Community Journal</i>. Peer Community In. <a href=\"https://doi.org/10.24072/pcjournal.69\">https://doi.org/10.24072/pcjournal.69</a>","mla":"Nardin, Michele, et al. “Nonlinear Computations in Spiking Neural Networks through Multiplicative Synapses.” <i>Peer Community Journal</i>, vol. 1, e68, Peer Community In, 2021, doi:<a href=\"https://doi.org/10.24072/pcjournal.69\">10.24072/pcjournal.69</a>."},"project":[{"grant_number":"665385","_id":"2564DBCA-B435-11E9-9278-68D0E5697425","name":"International IST Doctoral Program","call_identifier":"H2020"}],"scopus_import":"1","_id":"10635","intvolume":"         1","oa_version":"Published Version","article_type":"original","type":"journal_article","acknowledgement":"A preprint version of this article has been peer-reviewed and recommended by Peer Community In Neuroscience (DOI link to the recommendation: https://doi.org/10.24072/pci.cneuro.100003).\r\nWe thank Christian Machens and Nuno Calaim for useful discussions on the project. This report\r\ncame out of a collaboration started at the CAJAL Advanced Neuroscience Training Programme in\r\nComputational Neuroscience in Lisbon, Portugal, during the 2019 summer. The authors would\r\nlike to thank the participants, TAs, lecturers, and organizers of the summer school. SWK was\r\nsupported by the Simons Collaboration on the Global Brain (543009). WFP was supported by\r\nFCT (032077). MN was supported by European Union Horizon 2020 (665385).\r\n","date_published":"2021-12-15T00:00:00Z","month":"12","language":[{"iso":"eng"}],"date_updated":"2025-05-14T11:23:19Z","department":[{"_id":"GradSch"},{"_id":"JoCs"}],"publisher":"Peer Community In","arxiv":1,"file_date_updated":"2022-01-17T11:15:26Z","oa":1,"publication_identifier":{"eissn":["2804-3871"]},"doi":"10.24072/pcjournal.69","publication":"Peer Community Journal","date_created":"2022-01-17T11:12:40Z","year":"2021","article_number":"e68","has_accepted_license":"1","ddc":["519"],"corr_author":"1","file":[{"file_id":"10636","file_size":3311494,"date_updated":"2022-01-17T11:15:26Z","access_level":"open_access","checksum":"cd9af6b331918608f2e3d1c7940cbf4f","relation":"main_file","content_type":"application/pdf","file_name":"10_24072_pcjournal_69.pdf","date_created":"2022-01-17T11:15:26Z","success":1,"creator":"mnardin"}],"quality_controlled":"1","author":[{"id":"30BD0376-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8849-6570","full_name":"Nardin, Michele","last_name":"Nardin","first_name":"Michele"},{"last_name":"Phillips","first_name":"James W.","full_name":"Phillips, James W."},{"full_name":"Podlaski, William F.","last_name":"Podlaski","first_name":"William F."},{"full_name":"Keemink, Sander W.","last_name":"Keemink","first_name":"Sander W."}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","volume":1,"title":"Nonlinear computations in spiking neural networks through multiplicative synapses","article_processing_charge":"No","external_id":{"arxiv":["2009.03857"]},"publication_status":"published","abstract":[{"text":"The brain efficiently performs nonlinear computations through its intricate networks of spiking neurons, but how this is done remains elusive. While nonlinear computations can be implemented successfully in spiking neural networks, this requires supervised training and the resulting connectivity can be hard to interpret. In contrast, the required connectivity for any computation in the form of a linear dynamical system can be directly derived and understood with the spike coding network (SCN) framework. These networks also have biologically realistic activity patterns and are highly robust to cell death. Here we extend the SCN framework to directly implement any polynomial dynamical system, without the need for training. This results in networks requiring a mix of synapse types (fast, slow, and multiplicative), which we term multiplicative spike coding networks (mSCNs). Using mSCNs, we demonstrate how to directly derive the required connectivity for several nonlinear dynamical systems. We also show how to carry out higher-order polynomials with coupled networks that use only pair-wise multiplicative synapses, and provide expected numbers of connections for each synapse type. Overall, our work demonstrates a novel method for implementing nonlinear computations in spiking neural networks, while keeping the attractive features of standard SCNs (robustness, realistic activity patterns, and interpretable connectivity). Finally, we discuss the biological plausibility of our approach, and how the high accuracy and robustness of the approach may be of interest for neuromorphic computing.","lang":"eng"}]},{"type":"other_academic_publication","oa_version":"Published Version","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","author":[{"last_name":"Lake","first_name":"Russell","full_name":"Lake, Russell"},{"last_name":"Simbierowicz","first_name":"Slawomir","full_name":"Simbierowicz, Slawomir"},{"full_name":"Krantz, Philip","first_name":"Philip","last_name":"Krantz"},{"first_name":"Farid","last_name":"Hassani","full_name":"Hassani, Farid","id":"2AED110C-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6937-5773"},{"id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8112-028X","full_name":"Fink, Johannes M","first_name":"Johannes M","last_name":"Fink"}],"_id":"10644","abstract":[{"text":"The purpose of this application note is to demonstrate a working example of a superconducting qubit measurement in a Bluefors cryostat using the Keysight quantum control hardware. Our motivation is twofold. First, we provide pre-qualification data that the Bluefors cryostat, including filtering and wiring, can support long-lived qubits. Second, we demonstrate that the Keysight system (controlled using Labber) provides a straightforward solution to perform these characterization measurements. This document is intended as a brief guide for starting an experimental platform for testing superconducting qubits. The setup described here is an immediate jumping off point for a suite of applications including testing quantum logical gates, quantum optics with microwaves, or even using the qubit itself as a sensitive probe of local electromagnetic fields. Qubit measurements rely on high performance of both the physical sample environment and the measurement electronics. An overview of the cryogenic system is shown in Figure 1, and an overview of the integration between the electronics and cryostat (including wiring details) is shown in Figure 2.","lang":"eng"}],"oa":1,"publication_status":"published","page":"9","article_processing_charge":"No","department":[{"_id":"JoFi"}],"publisher":"Bluefors Oy","date_updated":"2026-06-18T08:45:11Z","month":"04","language":[{"iso":"eng"}],"title":"The Bluefors dilution refrigerator as an integrated quantum measurement system","keyword":["Application note"],"date_published":"2021-04-20T00:00:00Z","year":"2021","date_created":"2022-01-19T08:29:57Z","day":"20","status":"public","alternative_title":["Bluefors Blog"],"place":"Helsinki, Finland","quality_controlled":"1","citation":{"short":"R. Lake, S. Simbierowicz, P. Krantz, F. Hassani, J.M. Fink, The Bluefors Dilution Refrigerator as an Integrated Quantum Measurement System, Bluefors Oy, Helsinki, Finland, 2021.","ieee":"R. Lake, S. Simbierowicz, P. Krantz, F. Hassani, and J. M. Fink, <i>The Bluefors dilution refrigerator as an integrated quantum measurement system</i>. Helsinki, Finland: Bluefors Oy, 2021.","ama":"Lake R, Simbierowicz S, Krantz P, Hassani F, Fink JM. <i>The Bluefors Dilution Refrigerator as an Integrated Quantum Measurement System</i>. Helsinki, Finland: Bluefors Oy; 2021.","ista":"Lake R, Simbierowicz S, Krantz P, Hassani F, Fink JM. 2021. The Bluefors dilution refrigerator as an integrated quantum measurement system, Helsinki, Finland: Bluefors Oy, 9p.","apa":"Lake, R., Simbierowicz, S., Krantz, P., Hassani, F., &#38; Fink, J. M. (2021). <i>The Bluefors dilution refrigerator as an integrated quantum measurement system</i>. Helsinki, Finland: Bluefors Oy.","chicago":"Lake, Russell, Slawomir Simbierowicz, Philip Krantz, Farid Hassani, and Johannes M Fink. <i>The Bluefors Dilution Refrigerator as an Integrated Quantum Measurement System</i>. Helsinki, Finland: Bluefors Oy, 2021.","mla":"Lake, Russell, et al. <i>The Bluefors Dilution Refrigerator as an Integrated Quantum Measurement System</i>. Bluefors Oy, 2021."},"ddc":["530"],"main_file_link":[{"url":"https://bluefors.com/blog/integrated-quantum-measurement-system/","open_access":"1"}]},{"citation":{"mla":"Simbierowicz, Slawomir, et al. <i>Qubit Energy-Relaxation Statistics in the Bluefors Quantum Measurement System</i>. Bluefors Oy, 2021.","chicago":"Simbierowicz, Slawomir, Chunyan Shi, Michele Collodo, Moritz Kirste, Farid Hassani, Johannes M Fink, Jonas Bylander, Daniel Perez Lozano, and Russell Lake. <i>Qubit Energy-Relaxation Statistics in the Bluefors Quantum Measurement System</i>. Helsinki, Finland: Bluefors Oy, 2021.","apa":"Simbierowicz, S., Shi, C., Collodo, M., Kirste, M., Hassani, F., Fink, J. M., … Lake, R. (2021). <i>Qubit energy-relaxation statistics in the Bluefors quantum measurement system</i>. Helsinki, Finland: Bluefors Oy.","ama":"Simbierowicz S, Shi C, Collodo M, et al. <i>Qubit Energy-Relaxation Statistics in the Bluefors Quantum Measurement System</i>. Helsinki, Finland: Bluefors Oy; 2021.","ista":"Simbierowicz S, Shi C, Collodo M, Kirste M, Hassani F, Fink JM, Bylander J, Perez Lozano D, Lake R. 2021. Qubit energy-relaxation statistics in the Bluefors quantum measurement system, Helsinki, Finland: Bluefors Oy, 8p.","ieee":"S. Simbierowicz <i>et al.</i>, <i>Qubit energy-relaxation statistics in the Bluefors quantum measurement system</i>. Helsinki, Finland: Bluefors Oy, 2021.","short":"S. Simbierowicz, C. Shi, M. Collodo, M. Kirste, F. Hassani, J.M. Fink, J. Bylander, D. Perez Lozano, R. Lake, Qubit Energy-Relaxation Statistics in the Bluefors Quantum Measurement System, Bluefors Oy, Helsinki, Finland, 2021."},"quality_controlled":"1","main_file_link":[{"open_access":"1","url":"https://bluefors.com/blog/application-note-qubit-energy-relaxation-statistics-bluefors-quantum-measurement-system/"}],"ddc":["530"],"date_created":"2022-01-19T08:41:14Z","year":"2021","place":"Helsinki, Finland","alternative_title":["Bluefors Blog"],"status":"public","day":"03","article_processing_charge":"No","page":"8","publication_status":"published","abstract":[{"lang":"eng","text":"Superconducting qubits have emerged as a highly versatile and useful platform for quantum technological applications [1]. Bluefors and Zurich Instruments have supported the growth of this field from the 2010s onwards by providing well-engineered and reliable measurement infrastructure [2]– [6]. Having a long and stable qubit lifetime is a critical system property. Therefore, considerable effort has already gone into measuring qubit energy-relaxation timescales and their fluctuations, see Refs. [7]–[10] among others. Accurately extracting the statistics of a quantum device requires users to perform time consuming measurements. One measurement challenge is that the detection of the state-dependent\r\nresponse of a superconducting resonator due to a dispersively-coupled qubit requires an inherently low signal level. Consequently, measurements must be performed using a microwave probe that contains only a few microwave photons. Improving the signal-to-noise ratio (SNR) by using near-quantum limited parametric amplifiers as well as the use of optimized signal processing enabled by efficient room temperature instrumentation help to reduce measurement time. An empirical observation for fixed frequency transmons from recent literature is that as the energy-relaxation time 𝑇𝑇1 increases, so do its natural temporal fluctuations [7], [10]. This necessitates many repeated measurements to understand the statistics (see for example, Ref. [10]). In addition, as state-of-the-art qubits increase in lifetime, longer\r\nmeasurement times are expected to obtain accurate statistics. As described below, the scaling of the widths of the qubit energy-relaxation distributions also reveal clues about the origin of the energy-relaxation."}],"oa":1,"keyword":["Application note"],"date_published":"2021-06-03T00:00:00Z","title":"Qubit energy-relaxation statistics in the Bluefors quantum measurement system","month":"06","language":[{"iso":"eng"}],"date_updated":"2026-06-18T08:46:15Z","department":[{"_id":"JoFi"}],"publisher":"Bluefors Oy","author":[{"last_name":"Simbierowicz","first_name":"Slawomir","full_name":"Simbierowicz, Slawomir"},{"full_name":"Shi, Chunyan","first_name":"Chunyan","last_name":"Shi"},{"full_name":"Collodo, Michele","last_name":"Collodo","first_name":"Michele"},{"last_name":"Kirste","first_name":"Moritz","full_name":"Kirste, Moritz"},{"orcid":"0000-0001-6937-5773","id":"2AED110C-F248-11E8-B48F-1D18A9856A87","full_name":"Hassani, Farid","last_name":"Hassani","first_name":"Farid"},{"first_name":"Johannes M","last_name":"Fink","id":"4B591CBA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8112-028X","full_name":"Fink, Johannes M"},{"last_name":"Bylander","first_name":"Jonas","full_name":"Bylander, Jonas"},{"last_name":"Perez Lozano","first_name":"Daniel","full_name":"Perez Lozano, Daniel"},{"last_name":"Lake","first_name":"Russell","full_name":"Lake, Russell"}],"oa_version":"Published Version","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","type":"other_academic_publication","_id":"10645"},{"title":"Imaging and controlling vortex dynamics in mesoscopic superconductor-normal-metal-superconductor arrays","article_processing_charge":"No","external_id":{"arxiv":["1705.08956"]},"publication_status":"published","abstract":[{"lang":"eng","text":"Harnessing the properties of vortices in superconductors is crucial for fundamental science and technological applications; thus, it has been an ongoing goal to locally probe and control vortices. Here, we use a scanning probe technique that enables studies of vortex dynamics in superconducting systems by leveraging the resonant behavior of a raster-scanned, magnetic-tipped cantilever. This experimental setup allows us to image and control vortices, as well as extract key energy scales of the vortex interactions. Applying this technique to lattices of superconductor island arrays on a metal, we obtain a variety of striking spatial patterns that encode information about the energy landscape for vortices in the system. We interpret these patterns in terms of local vortex dynamics and extract the relative strengths of the characteristic energy scales in the system, such as the vortex-magnetic field and vortex-vortex interaction strengths, as well as the vortex chemical potential. We also demonstrate that the relative strengths of the interactions can be tuned and show how these interactions shift with an applied bias. The high degree of tunability and local nature of such vortex imaging and control not only enable new understanding of vortex interactions, but also have potential applications in more complex systems such as those relevant to quantum computing."}],"author":[{"full_name":"Naibert, Tyler R.","first_name":"Tyler R.","last_name":"Naibert"},{"last_name":"Polshyn","first_name":"Hryhoriy","id":"edfc7cb1-526e-11ec-b05a-e6ecc27e4e48","orcid":"0000-0001-8223-8896","full_name":"Polshyn, Hryhoriy"},{"last_name":"Garrido-Menacho","first_name":"Rita","full_name":"Garrido-Menacho, Rita"},{"full_name":"Durkin, Malcolm","last_name":"Durkin","first_name":"Malcolm"},{"first_name":"Brian","last_name":"Wolin","full_name":"Wolin, Brian"},{"last_name":"Chua","first_name":"Victor","full_name":"Chua, Victor"},{"full_name":"Mondragon-Shem, Ian","first_name":"Ian","last_name":"Mondragon-Shem"},{"last_name":"Hughes","first_name":"Taylor","full_name":"Hughes, Taylor"},{"full_name":"Mason, Nadya","last_name":"Mason","first_name":"Nadya"},{"full_name":"Budakian, Raffi","first_name":"Raffi","last_name":"Budakian"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","extern":"1","volume":103,"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1705.08956"}],"quality_controlled":"1","publication_identifier":{"eissn":["2469-9969"],"issn":["2469-9950"]},"doi":"10.1103/physrevb.103.224526","issue":"22","publication":"Physical Review B","date_created":"2022-01-20T09:39:40Z","year":"2021","article_number":"224526","date_published":"2021-06-24T00:00:00Z","language":[{"iso":"eng"}],"month":"06","date_updated":"2024-10-14T11:13:18Z","arxiv":1,"publisher":"American Physical Society","oa":1,"_id":"10649","intvolume":"       103","oa_version":"Preprint","article_type":"original","acknowledgement":"This work was supported by the Department of Energy (DOE) Basic Energy Sciences under Grant No. DE-SC0012649 and the National Science Foundation (NSF) under Grant No. DMR 17-10437. V.C. was supported by the Gordon and Betty Moore Foundation EPiQS Initiative through Grant No. GBMF4305. N.M. also acknowledges support from DOE-EFRC under Grant No. DE-SC0021238 for analysis/manuscript preparation. This research was carried out in part in the Materials Research Laboratory Central Research Facilities, University of Illinois.","type":"journal_article","citation":{"apa":"Naibert, T. R., Polshyn, H., Garrido-Menacho, R., Durkin, M., Wolin, B., Chua, V., … Budakian, R. (2021). Imaging and controlling vortex dynamics in mesoscopic superconductor-normal-metal-superconductor arrays. <i>Physical Review B</i>. American Physical Society. <a href=\"https://doi.org/10.1103/physrevb.103.224526\">https://doi.org/10.1103/physrevb.103.224526</a>","chicago":"Naibert, Tyler R., Hryhoriy Polshyn, Rita Garrido-Menacho, Malcolm Durkin, Brian Wolin, Victor Chua, Ian Mondragon-Shem, Taylor Hughes, Nadya Mason, and Raffi Budakian. “Imaging and Controlling Vortex Dynamics in Mesoscopic Superconductor-Normal-Metal-Superconductor Arrays.” <i>Physical Review B</i>. American Physical Society, 2021. <a href=\"https://doi.org/10.1103/physrevb.103.224526\">https://doi.org/10.1103/physrevb.103.224526</a>.","mla":"Naibert, Tyler R., et al. “Imaging and Controlling Vortex Dynamics in Mesoscopic Superconductor-Normal-Metal-Superconductor Arrays.” <i>Physical Review B</i>, vol. 103, no. 22, 224526, American Physical Society, 2021, doi:<a href=\"https://doi.org/10.1103/physrevb.103.224526\">10.1103/physrevb.103.224526</a>.","short":"T.R. Naibert, H. Polshyn, R. Garrido-Menacho, M. Durkin, B. Wolin, V. Chua, I. Mondragon-Shem, T. Hughes, N. Mason, R. Budakian, Physical Review B 103 (2021).","ieee":"T. R. Naibert <i>et al.</i>, “Imaging and controlling vortex dynamics in mesoscopic superconductor-normal-metal-superconductor arrays,” <i>Physical Review B</i>, vol. 103, no. 22. American Physical Society, 2021.","ista":"Naibert TR, Polshyn H, Garrido-Menacho R, Durkin M, Wolin B, Chua V, Mondragon-Shem I, Hughes T, Mason N, Budakian R. 2021. Imaging and controlling vortex dynamics in mesoscopic superconductor-normal-metal-superconductor arrays. Physical Review B. 103(22), 224526.","ama":"Naibert TR, Polshyn H, Garrido-Menacho R, et al. Imaging and controlling vortex dynamics in mesoscopic superconductor-normal-metal-superconductor arrays. <i>Physical Review B</i>. 2021;103(22). doi:<a href=\"https://doi.org/10.1103/physrevb.103.224526\">10.1103/physrevb.103.224526</a>"},"status":"public","day":"24"},{"quality_controlled":"1","main_file_link":[{"open_access":"1","url":"https://meetings.aps.org/Meeting/MAR21/Session/L42.12"}],"conference":{"name":"APS: American Physical Society","start_date":"2021-03-15","location":"Virtual, United States","end_date":"2021-03-19"},"year":"2021","date_created":"2022-01-20T15:43:16Z","article_number":"L42.00012","issue":"1","publication_identifier":{"issn":["0003-0503"]},"publication":"APS March Meeting 2021","article_processing_charge":"No","abstract":[{"lang":"eng","text":"Electrons in the moiré flat bands of magic angle twisted bilayer graphene aligned to hexagonal boron nitride can break time reversal symmetry and open an interaction-driven, topological gap. The resulting magnetic order and associated quantized anomalous Hall effect have properties that diverge substantially from quantized anomalous Hall effects observed in other systems. I will present transport data and scanning probe magnetometry data acquired using a nanoSQUID-on-tip microscope. A quantitative analysis of the magnitude of the magnetization of the Chern magnet shows that the magnetic moment per moiré unit cell substantially exceeds 1 μB and grows rapidly in the topological gap, consistent with an orbital origin for the magnetic order. We find that the Barkhausen jumps observed in transport measurements can be mapped directly to microscopic motion of ferromagnetic domain walls. These domain walls are strongly pinned to disorder in the device and are reproducible across thermal cycles, suggesting coupling between the magnetic degrees of freedom and structural inhomogeneity."}],"publication_status":"published","title":"Probing orbital Chern ferromagnet phase in twisted bilayer graphene","extern":"1","user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","author":[{"first_name":"Charles","last_name":"Tschirhart","full_name":"Tschirhart, Charles"},{"last_name":"Serlin","first_name":"Marec","full_name":"Serlin, Marec"},{"first_name":"Hryhoriy","last_name":"Polshyn","full_name":"Polshyn, Hryhoriy","orcid":"0000-0001-8223-8896","id":"edfc7cb1-526e-11ec-b05a-e6ecc27e4e48"},{"full_name":"Shragai, Avi G.","last_name":"Shragai","first_name":"Avi G."},{"full_name":"Xia, Zhengchao","last_name":"Xia","first_name":"Zhengchao"},{"last_name":"Zhu","first_name":"Jiacheng","full_name":"Zhu, Jiacheng"},{"first_name":"Yuxuan","last_name":"Zhang","full_name":"Zhang, Yuxuan"},{"full_name":"Watanabe, Kenji","last_name":"Watanabe","first_name":"Kenji"},{"full_name":"Taniguchi, Takashi","last_name":"Taniguchi","first_name":"Takashi"},{"first_name":"Martin E.","last_name":"Huber","full_name":"Huber, Martin E."},{"full_name":"Young, Andrea","first_name":"Andrea","last_name":"Young"}],"volume":66,"citation":{"mla":"Tschirhart, Charles, et al. “Probing Orbital Chern Ferromagnet Phase in Twisted Bilayer Graphene.” <i>APS March Meeting 2021</i>, vol. 66, no. 1, L42.00012, American Physical Society, 2021.","chicago":"Tschirhart, Charles, Marec Serlin, Hryhoriy Polshyn, Avi G. Shragai, Zhengchao Xia, Jiacheng Zhu, Yuxuan Zhang, et al. “Probing Orbital Chern Ferromagnet Phase in Twisted Bilayer Graphene.” In <i>APS March Meeting 2021</i>, Vol. 66. American Physical Society, 2021.","apa":"Tschirhart, C., Serlin, M., Polshyn, H., Shragai, A. G., Xia, Z., Zhu, J., … Young, A. (2021). Probing orbital Chern ferromagnet phase in twisted bilayer graphene. In <i>APS March Meeting 2021</i> (Vol. 66). Virtual, United States: American Physical Society.","ama":"Tschirhart C, Serlin M, Polshyn H, et al. Probing orbital Chern ferromagnet phase in twisted bilayer graphene. In: <i>APS March Meeting 2021</i>. Vol 66. American Physical Society; 2021.","ista":"Tschirhart C, Serlin M, Polshyn H, Shragai AG, Xia Z, Zhu J, Zhang Y, Watanabe K, Taniguchi T, Huber ME, Young A. 2021. Probing orbital Chern ferromagnet phase in twisted bilayer graphene. APS March Meeting 2021. APS: American Physical Society, Bulletin of the American Physical Society, vol. 66, L42.00012.","short":"C. Tschirhart, M. Serlin, H. Polshyn, A.G. Shragai, Z. Xia, J. Zhu, Y. Zhang, K. Watanabe, T. Taniguchi, M.E. Huber, A. Young, in:, APS March Meeting 2021, American Physical Society, 2021.","ieee":"C. Tschirhart <i>et al.</i>, “Probing orbital Chern ferromagnet phase in twisted bilayer graphene,” in <i>APS March Meeting 2021</i>, Virtual, United States, 2021, vol. 66, no. 1."},"alternative_title":["Bulletin of the American Physical Society"],"day":"01","status":"public","oa":1,"language":[{"iso":"eng"}],"month":"03","date_published":"2021-03-01T00:00:00Z","publisher":"American Physical Society","date_updated":"2022-01-27T09:37:51Z","intvolume":"        66","oa_version":"None","type":"conference","acknowledgement":"I acknowledge and appreciate support from the Hertz Foundation and from the National Science Foundation Graduate Research Fellowship Program under grant 1650114.","_id":"10651"},{"status":"public","day":"10","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"ec_funded":1,"citation":{"mla":"Maes, Margaret E., et al. “Optimizing AAV2/6 Microglial Targeting Identified Enhanced Efficiency in the Photoreceptor Degenerative Environment.” <i>Molecular Therapy - Methods and Clinical Development</i>, vol. 23, Elsevier, 2021, pp. 210–24, doi:<a href=\"https://doi.org/10.1016/j.omtm.2021.09.006\">10.1016/j.omtm.2021.09.006</a>.","apa":"Maes, M. E., Wögenstein, G. M., Colombo, G., Casado Polanco, R., &#38; Siegert, S. (2021). Optimizing AAV2/6 microglial targeting identified enhanced efficiency in the photoreceptor degenerative environment. <i>Molecular Therapy - Methods and Clinical Development</i>. Elsevier. <a href=\"https://doi.org/10.1016/j.omtm.2021.09.006\">https://doi.org/10.1016/j.omtm.2021.09.006</a>","chicago":"Maes, Margaret E, Gabriele M. Wögenstein, Gloria Colombo, Raquel Casado Polanco, and Sandra Siegert. “Optimizing AAV2/6 Microglial Targeting Identified Enhanced Efficiency in the Photoreceptor Degenerative Environment.” <i>Molecular Therapy - Methods and Clinical Development</i>. Elsevier, 2021. <a href=\"https://doi.org/10.1016/j.omtm.2021.09.006\">https://doi.org/10.1016/j.omtm.2021.09.006</a>.","ista":"Maes ME, Wögenstein GM, Colombo G, Casado Polanco R, Siegert S. 2021. Optimizing AAV2/6 microglial targeting identified enhanced efficiency in the photoreceptor degenerative environment. Molecular Therapy - Methods and Clinical Development. 23, 210–224.","ama":"Maes ME, Wögenstein GM, Colombo G, Casado Polanco R, Siegert S. Optimizing AAV2/6 microglial targeting identified enhanced efficiency in the photoreceptor degenerative environment. <i>Molecular Therapy - Methods and Clinical Development</i>. 2021;23:210-224. doi:<a href=\"https://doi.org/10.1016/j.omtm.2021.09.006\">10.1016/j.omtm.2021.09.006</a>","ieee":"M. E. Maes, G. M. Wögenstein, G. Colombo, R. Casado Polanco, and S. Siegert, “Optimizing AAV2/6 microglial targeting identified enhanced efficiency in the photoreceptor degenerative environment,” <i>Molecular Therapy - Methods and Clinical Development</i>, vol. 23. Elsevier, pp. 210–224, 2021.","short":"M.E. Maes, G.M. Wögenstein, G. Colombo, R. Casado Polanco, S. Siegert, Molecular Therapy - Methods and Clinical Development 23 (2021) 210–224."},"project":[{"grant_number":"715571","_id":"25D4A630-B435-11E9-9278-68D0E5697425","name":"Microglia action towards neuronal circuit formation and function in health and disease","call_identifier":"H2020"}],"scopus_import":"1","_id":"10655","intvolume":"        23","oa_version":"Published Version","article_type":"original","acknowledgement":"This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement no. 715571). The research was supported by the Scientific Service Units (SSU) of IST Austria through resources provided by the Bioimaging Facility, the Life Science Facility, and the Pre-Clinical Facility, namely Sonja Haslinger and Michael Schunn for their animal colony management and support. We would also like to thank Chakrabarty Lab for sharing the plasmids for AAV2/6 production. Finally, we would like to thank the Siegert team members for discussion about the manuscript.","type":"journal_article","date_published":"2021-12-10T00:00:00Z","month":"12","language":[{"iso":"eng"}],"date_updated":"2025-04-14T07:41:46Z","department":[{"_id":"SaSi"},{"_id":"SiHi"}],"publisher":"Elsevier","isi":1,"file_date_updated":"2022-01-24T07:43:09Z","oa":1,"doi":"10.1016/j.omtm.2021.09.006","publication_identifier":{"eissn":["2329-0501"]},"publication":"Molecular Therapy - Methods and Clinical Development","date_created":"2022-01-23T23:01:28Z","year":"2021","has_accepted_license":"1","ddc":["570"],"corr_author":"1","file":[{"file_id":"10657","date_updated":"2022-01-24T07:43:09Z","file_size":4794147,"access_level":"open_access","checksum":"77dc540e8011c5475031bdf6ccef20a6","relation":"main_file","content_type":"application/pdf","file_name":"2021_MolTherMethodsClinDev_Maes.pdf","date_created":"2022-01-24T07:43:09Z","success":1,"creator":"cchlebak"}],"quality_controlled":"1","acknowledged_ssus":[{"_id":"Bio"},{"_id":"LifeSc"},{"_id":"PreCl"}],"author":[{"last_name":"Maes","first_name":"Margaret E","full_name":"Maes, Margaret E","id":"3838F452-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-9642-1085"},{"last_name":"Wögenstein","first_name":"Gabriele M.","full_name":"Wögenstein, Gabriele M."},{"first_name":"Gloria","last_name":"Colombo","full_name":"Colombo, Gloria","id":"3483CF6C-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-9434-8902"},{"first_name":"Raquel","last_name":"Casado Polanco","full_name":"Casado Polanco, Raquel","orcid":"0000-0001-8293-4568","id":"15240fc1-dbcd-11ea-9d1d-ac5a786425fd"},{"id":"36ACD32E-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8635-0877","full_name":"Siegert, Sandra","last_name":"Siegert","first_name":"Sandra"}],"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","volume":23,"title":"Optimizing AAV2/6 microglial targeting identified enhanced efficiency in the photoreceptor degenerative environment","article_processing_charge":"Yes","page":"210-224","publication_status":"published","external_id":{"isi":["000748748500019"]},"abstract":[{"lang":"eng","text":"Adeno-associated viruses (AAVs) are widely used to deliver genetic material in vivo to distinct cell types such as neurons or glial cells, allowing for targeted manipulation. Transduction of microglia is mostly excluded from this strategy, likely due to the cells’ heterogeneous state upon environmental changes, which makes AAV design challenging. Here, we established the retina as a model system for microglial AAV validation and optimization. First, we show that AAV2/6 transduced microglia in both synaptic layers, where layer preference corresponds to the intravitreal or subretinal delivery method. Surprisingly, we observed significantly enhanced microglial transduction during photoreceptor degeneration. Thus, we modified the AAV6 capsid to reduce heparin binding by introducing four point mutations (K531E, R576Q, K493S, and K459S), resulting in increased microglial transduction in the outer plexiform layer. Finally, to improve microglial-specific transduction, we validated a Cre-dependent transgene delivery cassette for use in combination with the Cx3cr1CreERT2 mouse line. Together, our results provide a foundation for future studies optimizing AAV-mediated microglia transduction and highlight that environmental conditions influence microglial transduction efficiency.\r\n"}]},{"file_date_updated":"2022-01-26T07:38:32Z","oa":1,"date_published":"2021-07-01T00:00:00Z","language":[{"iso":"eng"}],"month":"07","date_updated":"2025-05-19T11:28:08Z","department":[{"_id":"GradSch"},{"_id":"ToHe"}],"publisher":"ML Research Press","arxiv":1,"intvolume":"       139","oa_version":"Published Version","type":"conference","acknowledgement":"Z.B. is supported by the Doctoral College Resilient Embedded Systems, which is run jointly by the TU Wien’s Faculty of Informatics and the UAS Technikum Wien. R.G. is partially supported by the Horizon 2020 Era-Permed project Persorad, and ECSEL Project grant no. 783163 (iDev40). R.H and D.R were partially supported by Boeing and MIT. M.L. is supported in part by the Austrian Science Fund (FWF) under grant Z211-N23 (Wittgenstein Award).","_id":"10668","citation":{"ama":"Babaiee Z, Hasani R, Lechner M, Rus D, Grosu R. On-off center-surround receptive fields for accurate and robust image classification. In: <i>Proceedings of the 38th International Conference on Machine Learning</i>. Vol 139. ML Research Press; 2021:478-489.","ista":"Babaiee Z, Hasani R, Lechner M, Rus D, Grosu R. 2021. On-off center-surround receptive fields for accurate and robust image classification. Proceedings of the 38th International Conference on Machine Learning. ML: Machine Learning, PMLR, vol. 139, 478–489.","ieee":"Z. Babaiee, R. Hasani, M. Lechner, D. Rus, and R. Grosu, “On-off center-surround receptive fields for accurate and robust image classification,” in <i>Proceedings of the 38th International Conference on Machine Learning</i>, Virtual, 2021, vol. 139, pp. 478–489.","short":"Z. Babaiee, R. Hasani, M. Lechner, D. Rus, R. Grosu, in:, Proceedings of the 38th International Conference on Machine Learning, ML Research Press, 2021, pp. 478–489.","mla":"Babaiee, Zahra, et al. “On-off Center-Surround Receptive Fields for Accurate and Robust Image Classification.” <i>Proceedings of the 38th International Conference on Machine Learning</i>, vol. 139, ML Research Press, 2021, pp. 478–89.","chicago":"Babaiee, Zahra, Ramin Hasani, Mathias Lechner, Daniela Rus, and Radu Grosu. “On-off Center-Surround Receptive Fields for Accurate and Robust Image Classification.” In <i>Proceedings of the 38th International Conference on Machine Learning</i>, 139:478–89. ML Research Press, 2021.","apa":"Babaiee, Z., Hasani, R., Lechner, M., Rus, D., &#38; Grosu, R. (2021). On-off center-surround receptive fields for accurate and robust image classification. In <i>Proceedings of the 38th International Conference on Machine Learning</i> (Vol. 139, pp. 478–489). Virtual: ML Research Press."},"project":[{"call_identifier":"FWF","name":"Formal methods for the design and analysis of complex systems","_id":"25F42A32-B435-11E9-9278-68D0E5697425","grant_number":"Z211"}],"tmp":{"short":"CC BY-NC-ND (3.0)","name":"Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND 3.0)","legal_code_url":"https://creativecommons.org/licenses/by-nc-nd/3.0/legalcode","image":"/images/cc_by_nc_nd.png"},"alternative_title":["PMLR"],"status":"public","day":"01","license":"https://creativecommons.org/licenses/by-nc-nd/3.0/","article_processing_charge":"No","page":"478-489","external_id":{"arxiv":["2106.07091"]},"publication_status":"published","abstract":[{"lang":"eng","text":"Robustness to variations in lighting conditions is a key objective for any deep vision system. To this end, our paper extends the receptive field of convolutional neural networks with two residual components, ubiquitous in the visual processing system of vertebrates: On-center and off-center pathways, with an excitatory center and inhibitory surround; OOCS for short. The On-center pathway is excited by the presence of a light stimulus in its center, but not in its surround, whereas the Off-center pathway is excited by the absence of a light stimulus in its center, but not in its surround. We design OOCS pathways via a difference of Gaussians, with their variance computed analytically from the size of the receptive fields. OOCS pathways complement each other in their response to light stimuli, ensuring this way a strong edge-detection capability, and as a result an accurate and robust inference under challenging lighting conditions. We provide extensive empirical evidence showing that networks supplied with OOCS pathways gain accuracy and illumination-robustness from the novel edge representation, compared to other baselines."}],"title":"On-off center-surround receptive fields for accurate and robust image classification","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","author":[{"last_name":"Babaiee","first_name":"Zahra","full_name":"Babaiee, Zahra"},{"full_name":"Hasani, Ramin","first_name":"Ramin","last_name":"Hasani"},{"full_name":"Lechner, Mathias","id":"3DC22916-F248-11E8-B48F-1D18A9856A87","first_name":"Mathias","last_name":"Lechner"},{"first_name":"Daniela","last_name":"Rus","full_name":"Rus, Daniela"},{"last_name":"Grosu","first_name":"Radu","full_name":"Grosu, Radu"}],"volume":139,"file":[{"file_id":"10681","checksum":"d30eae62561bb517d9f978437d7677db","relation":"main_file","access_level":"open_access","date_updated":"2022-01-26T07:38:32Z","file_size":4246561,"date_created":"2022-01-26T07:38:32Z","content_type":"application/pdf","file_name":"babaiee21a.pdf","creator":"mlechner","success":1}],"quality_controlled":"1","has_accepted_license":"1","main_file_link":[{"url":"https://proceedings.mlr.press/v139/babaiee21a","open_access":"1"}],"conference":{"start_date":"2021-07-18","name":"ML: Machine Learning","location":"Virtual","end_date":"2021-07-24"},"ddc":["000"],"date_created":"2022-01-25T15:46:33Z","year":"2021","publication_identifier":{"issn":["2640-3498"]},"publication":"Proceedings of the 38th International Conference on Machine Learning"},{"ddc":["000"],"conference":{"start_date":"2021-10-20","name":"FMCAD: Formal Methods in Computer-Aided Design","end_date":"2021-10-22","location":"Virtual"},"has_accepted_license":"1","file":[{"success":1,"creator":"cchlebak","date_created":"2022-01-26T08:04:29Z","file_name":"2021_FCAD2021_Kragl.pdf","content_type":"application/pdf","access_level":"open_access","relation":"main_file","checksum":"35438ac9f9750340b7f8ae4ae3220d9f","date_updated":"2022-01-26T08:04:29Z","file_size":390555,"file_id":"10689"}],"quality_controlled":"1","corr_author":"1","publication":"Proceedings of the 21st Conference on Formal Methods in Computer-Aided Design","publication_identifier":{"isbn":["978-3-85448-046-4"]},"doi":"10.34727/2021/isbn.978-3-85448-046-4_23","year":"2021","date_created":"2022-01-26T08:01:30Z","title":"The Civl verifier","abstract":[{"text":"Civl is a static verifier for concurrent programs designed around the conceptual framework of layered refinement,\r\nwhich views the task of verifying a program as a sequence of program simplification steps each justified by its own invariant. Civl verifies a layered concurrent program that compactly expresses all the programs in this sequence and the supporting invariants. This paper presents the design and implementation of the Civl verifier.","lang":"eng"}],"publication_status":"published","page":"143–152","article_processing_charge":"No","volume":2,"editor":[{"full_name":"Ruzica, Piskac","first_name":"Piskac","last_name":"Ruzica"},{"full_name":"Whalen, Michael W.","last_name":"Whalen","first_name":"Michael W."}],"author":[{"first_name":"Bernhard","last_name":"Kragl","full_name":"Kragl, Bernhard","orcid":"0000-0001-7745-9117","id":"320FC952-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Shaz","last_name":"Qadeer","full_name":"Qadeer, Shaz"}],"user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","project":[{"call_identifier":"FWF","name":"Formal methods for the design and analysis of complex systems","_id":"25F42A32-B435-11E9-9278-68D0E5697425","grant_number":"Z211"}],"citation":{"mla":"Kragl, Bernhard, and Shaz Qadeer. “The Civl Verifier.” <i>Proceedings of the 21st Conference on Formal Methods in Computer-Aided Design</i>, edited by Piskac Ruzica and Michael W. Whalen, vol. 2, TU Wien Academic Press, 2021, pp. 143–152, doi:<a href=\"https://doi.org/10.34727/2021/isbn.978-3-85448-046-4_23\">10.34727/2021/isbn.978-3-85448-046-4_23</a>.","chicago":"Kragl, Bernhard, and Shaz Qadeer. “The Civl Verifier.” In <i>Proceedings of the 21st Conference on Formal Methods in Computer-Aided Design</i>, edited by Piskac Ruzica and Michael W. Whalen, 2:143–152. TU Wien Academic Press, 2021. <a href=\"https://doi.org/10.34727/2021/isbn.978-3-85448-046-4_23\">https://doi.org/10.34727/2021/isbn.978-3-85448-046-4_23</a>.","apa":"Kragl, B., &#38; Qadeer, S. (2021). The Civl verifier. In P. Ruzica &#38; M. W. Whalen (Eds.), <i>Proceedings of the 21st Conference on Formal Methods in Computer-Aided Design</i> (Vol. 2, pp. 143–152). Virtual: TU Wien Academic Press. <a href=\"https://doi.org/10.34727/2021/isbn.978-3-85448-046-4_23\">https://doi.org/10.34727/2021/isbn.978-3-85448-046-4_23</a>","ama":"Kragl B, Qadeer S. The Civl verifier. In: Ruzica P, Whalen MW, eds. <i>Proceedings of the 21st Conference on Formal Methods in Computer-Aided Design</i>. Vol 2. TU Wien Academic Press; 2021:143–152. doi:<a href=\"https://doi.org/10.34727/2021/isbn.978-3-85448-046-4_23\">10.34727/2021/isbn.978-3-85448-046-4_23</a>","ista":"Kragl B, Qadeer S. 2021. The Civl verifier. Proceedings of the 21st Conference on Formal Methods in Computer-Aided Design. FMCAD: Formal Methods in Computer-Aided Design, Conference Series, vol. 2, 143–152.","ieee":"B. Kragl and S. Qadeer, “The Civl verifier,” in <i>Proceedings of the 21st Conference on Formal Methods in Computer-Aided Design</i>, Virtual, 2021, vol. 2, pp. 143–152.","short":"B. Kragl, S. Qadeer, in:, P. Ruzica, M.W. Whalen (Eds.), Proceedings of the 21st Conference on Formal Methods in Computer-Aided Design, TU Wien Academic Press, 2021, pp. 143–152."},"status":"public","day":"01","alternative_title":["Conference Series"],"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"publisher":"TU Wien Academic Press","department":[{"_id":"ToHe"}],"date_updated":"2025-04-15T06:25:56Z","language":[{"iso":"eng"}],"month":"10","date_published":"2021-10-01T00:00:00Z","oa":1,"file_date_updated":"2022-01-26T08:04:29Z","_id":"10688","scopus_import":"1","acknowledgement":"This research was performed while Bernhard Kragl was at IST Austria, supported in part by the Austrian Science Fund (FWF) under grant Z211-N23 (Wittgenstein Award).","type":"conference","intvolume":"         2","oa_version":"Published Version"},{"conference":{"location":"Virtual","end_date":"2021-03-19","name":"APS: American Physical Society","start_date":"2021-03-15"},"main_file_link":[{"url":"https://meetings.aps.org/Meeting/MAR21/Session/E42.10","open_access":"1"}],"quality_controlled":"1","citation":{"mla":"Polshyn, Hryhoriy, et al. “Orbital Chern Insulator States in Twisted Monolayer-Bilayer Graphene and Electrical Switching of Topological and Magnetic Order.” <i>APS March Meeting 2021</i>, vol. 66, no. 1, E42.00010, American Physical Society, 2021.","apa":"Polshyn, H., Zhu, J., Kumar, M., Zhang, Y., Yang, F., Tschirhart, C., … Young, A. (2021). Orbital Chern insulator states in twisted monolayer-bilayer graphene and electrical switching of topological and magnetic order. In <i>APS March Meeting 2021</i> (Vol. 66). Virtual: American Physical Society.","chicago":"Polshyn, Hryhoriy, Jihang Zhu, Manish Kumar, Yuxuan Zhang, Fangyuan Yang, Charles Tschirhart, Marec Serlin, et al. “Orbital Chern Insulator States in Twisted Monolayer-Bilayer Graphene and Electrical Switching of Topological and Magnetic Order.” In <i>APS March Meeting 2021</i>, Vol. 66. American Physical Society, 2021.","ama":"Polshyn H, Zhu J, Kumar M, et al. Orbital Chern insulator states in twisted monolayer-bilayer graphene and electrical switching of topological and magnetic order. In: <i>APS March Meeting 2021</i>. Vol 66. American Physical Society; 2021.","ista":"Polshyn H, Zhu J, Kumar M, Zhang Y, Yang F, Tschirhart C, Serlin M, Watanabe K, Tanaguchi T, MacDonald A, Young A. 2021. Orbital Chern insulator states in twisted monolayer-bilayer graphene and electrical switching of topological and magnetic order. APS March Meeting 2021. APS: American Physical Society, Bulletin of the American Physical Society, vol. 66, E42.00010.","short":"H. Polshyn, J. Zhu, M. Kumar, Y. Zhang, F. Yang, C. Tschirhart, M. Serlin, K. Watanabe, T. Tanaguchi, A. MacDonald, A. Young, in:, APS March Meeting 2021, American Physical Society, 2021.","ieee":"H. Polshyn <i>et al.</i>, “Orbital Chern insulator states in twisted monolayer-bilayer graphene and electrical switching of topological and magnetic order,” in <i>APS March Meeting 2021</i>, Virtual, 2021, vol. 66, no. 1."},"day":"01","status":"public","publication":"APS March Meeting 2021","publication_identifier":{"issn":["0003-0503"]},"issue":"1","alternative_title":["Bulletin of the American Physical Society"],"article_number":"E42.00010","date_created":"2022-01-27T09:49:48Z","year":"2021","date_updated":"2022-01-27T10:46:23Z","publisher":"American Physical Society","date_published":"2021-03-01T00:00:00Z","title":"Orbital Chern insulator states in twisted monolayer-bilayer graphene and electrical switching of topological and magnetic order","month":"03","language":[{"iso":"eng"}],"oa":1,"abstract":[{"lang":"eng","text":"We experimentally investigate narrow and topologically nontrivial moiré minibands hosted by van der Waals heterostructures consisting of a graphene monolayer rotationally faulted with respect to a Bernal-stacked bilayer. At fillings ν= 1 and 3 electrons per moiré unit cell within these bands, we observe quantized anomalous Hall effects with Rxy≈h/2e2, indicative of spontaneous polarization of the system into a single valley-projected band with Chern number C= 2. Remarkably, we also observe the evidence of symmetry broken Chern insulator states at ν= 1.5 and 3.5. At ν= 3 we find that the sign of the quantum anomalous Hall effect can be reversed via field-effect control of the chemical potential. This curious effect arises from the magnetization contribution due to topological edge states, which drive a reversal of the total magnetization and thus a switch of the favored magnetic state. Remarkably, we find that this switch is hysteretic, which we use to demonstrate non-volatile electric-field-induced reversal of the magnetic state. Voltage control of magnetic states can be used to electrically pattern nonvolatile magnetic domain structures hosting chiral edge states, with applications ranging from reconfigurable microwave circuit elements to ultra-low-power magnetic memory."}],"article_processing_charge":"No","_id":"10692","type":"conference","volume":66,"author":[{"full_name":"Polshyn, Hryhoriy","id":"edfc7cb1-526e-11ec-b05a-e6ecc27e4e48","orcid":"0000-0001-8223-8896","last_name":"Polshyn","first_name":"Hryhoriy"},{"full_name":"Zhu, Jihang","last_name":"Zhu","first_name":"Jihang"},{"full_name":"Kumar, Manish","first_name":"Manish","last_name":"Kumar"},{"last_name":"Zhang","first_name":"Yuxuan","full_name":"Zhang, Yuxuan"},{"full_name":"Yang, Fangyuan","last_name":"Yang","first_name":"Fangyuan"},{"full_name":"Tschirhart, Charles","first_name":"Charles","last_name":"Tschirhart"},{"first_name":"Marec","last_name":"Serlin","full_name":"Serlin, Marec"},{"full_name":"Watanabe, Kenji","first_name":"Kenji","last_name":"Watanabe"},{"last_name":"Tanaguchi","first_name":"Takashi","full_name":"Tanaguchi, Takashi"},{"last_name":"MacDonald","first_name":"Allan","full_name":"MacDonald, Allan"},{"first_name":"Andrea","last_name":"Young","full_name":"Young, Andrea"}],"user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","oa_version":"Published Version","intvolume":"        66","extern":"1"},{"status":"public","day":"01","ec_funded":1,"project":[{"_id":"25F42A32-B435-11E9-9278-68D0E5697425","grant_number":"Z211","call_identifier":"FWF","name":"Formal methods for the design and analysis of complex systems"},{"_id":"0599E47C-7A3F-11EA-A408-12923DDC885E","grant_number":"863818","call_identifier":"H2020","name":"Formal Methods for Stochastic Models: Algorithms and Applications"},{"call_identifier":"H2020","name":"International IST Doctoral Program","_id":"2564DBCA-B435-11E9-9278-68D0E5697425","grant_number":"665385"}],"citation":{"mla":"Avni, Guy, et al. “Infinite-Duration All-Pay Bidding Games.” <i>Proceedings of the 2021 ACM-SIAM Symposium on Discrete Algorithms</i>, edited by Dániel Marx, Society for Industrial and Applied Mathematics, 2021, pp. 617–36, doi:<a href=\"https://doi.org/10.1137/1.9781611976465.38\">10.1137/1.9781611976465.38</a>.","chicago":"Avni, Guy, Ismael R Jecker, and Dorde Zikelic. “Infinite-Duration All-Pay Bidding Games.” In <i>Proceedings of the 2021 ACM-SIAM Symposium on Discrete Algorithms</i>, edited by Dániel Marx, 617–36. Society for Industrial and Applied Mathematics, 2021. <a href=\"https://doi.org/10.1137/1.9781611976465.38\">https://doi.org/10.1137/1.9781611976465.38</a>.","apa":"Avni, G., Jecker, I. R., &#38; Zikelic, D. (2021). Infinite-duration all-pay bidding games. In D. Marx (Ed.), <i>Proceedings of the 2021 ACM-SIAM Symposium on Discrete Algorithms</i> (pp. 617–636). Virtual: Society for Industrial and Applied Mathematics. <a href=\"https://doi.org/10.1137/1.9781611976465.38\">https://doi.org/10.1137/1.9781611976465.38</a>","ista":"Avni G, Jecker IR, Zikelic D. 2021. Infinite-duration all-pay bidding games. Proceedings of the 2021 ACM-SIAM Symposium on Discrete Algorithms. SODA: Symposium on Discrete Algorithms, 617–636.","ama":"Avni G, Jecker IR, Zikelic D. Infinite-duration all-pay bidding games. In: Marx D, ed. <i>Proceedings of the 2021 ACM-SIAM Symposium on Discrete Algorithms</i>. Society for Industrial and Applied Mathematics; 2021:617-636. doi:<a href=\"https://doi.org/10.1137/1.9781611976465.38\">10.1137/1.9781611976465.38</a>","ieee":"G. Avni, I. R. Jecker, and D. Zikelic, “Infinite-duration all-pay bidding games,” in <i>Proceedings of the 2021 ACM-SIAM Symposium on Discrete Algorithms</i>, Virtual, 2021, pp. 617–636.","short":"G. Avni, I.R. Jecker, D. Zikelic, in:, D. Marx (Ed.), Proceedings of the 2021 ACM-SIAM Symposium on Discrete Algorithms, Society for Industrial and Applied Mathematics, 2021, pp. 617–636."},"scopus_import":"1","_id":"10694","type":"conference","acknowledgement":"This research was supported in part by the Austrian Science Fund (FWF) under grant Z211-N23 (Wittgenstein Award), ERC CoG 863818 (FoRM-SMArt), and by the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 665385.","oa_version":"Preprint","date_updated":"2025-04-15T06:26:15Z","department":[{"_id":"GradSch"},{"_id":"KrCh"}],"arxiv":1,"publisher":"Society for Industrial and Applied Mathematics","date_published":"2021-01-01T00:00:00Z","language":[{"iso":"eng"}],"month":"01","oa":1,"publication":"Proceedings of the 2021 ACM-SIAM Symposium on Discrete Algorithms","doi":"10.1137/1.9781611976465.38","publication_identifier":{"isbn":["978-1-61197-646-5"]},"date_created":"2022-01-27T12:11:23Z","year":"2021","conference":{"end_date":"2021-01-13","location":"Virtual","name":"SODA: Symposium on Discrete Algorithms","start_date":"2021-01-10"},"main_file_link":[{"url":"https://arxiv.org/abs/2005.06636","open_access":"1"}],"quality_controlled":"1","corr_author":"1","editor":[{"full_name":"Marx, Dániel","first_name":"Dániel","last_name":"Marx"}],"author":[{"id":"463C8BC2-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-5588-8287","full_name":"Avni, Guy","first_name":"Guy","last_name":"Avni"},{"first_name":"Ismael R","last_name":"Jecker","full_name":"Jecker, Ismael R","id":"85D7C63E-7D5D-11E9-9C0F-98C4E5697425"},{"last_name":"Zikelic","first_name":"Dorde","full_name":"Zikelic, Dorde","id":"294AA7A6-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-4681-1699"}],"user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","title":"Infinite-duration all-pay bidding games","publication_status":"published","external_id":{"arxiv":["2005.06636"]},"abstract":[{"lang":"eng","text":"In a two-player zero-sum graph game the players move a token throughout a graph to produce an infinite path, which determines the winner or payoff of the game. Traditionally, the players alternate turns in moving the token. In bidding games, however, the players have budgets, and in each turn, we hold an “auction” (bidding) to determine which player moves the token: both players simultaneously submit bids and the higher bidder moves the token. The bidding mechanisms differ in their payment schemes. Bidding games were largely studied with variants of first-price bidding in which only the higher bidder pays his bid. We focus on all-pay bidding, where both players pay their bids. Finite-duration all-pay bidding games were studied and shown to be technically more challenging than their first-price counterparts. We study for the first time, infinite-duration all-pay bidding games. Our most interesting results are for mean-payoff objectives: we portray a complete picture for games played on strongly-connected graphs. We study both pure (deterministic) and mixed (probabilistic) strategies and completely characterize the optimal and almost-sure (with probability 1) payoffs the players can respectively guarantee. We show that mean-payoff games under all-pay bidding exhibit the intriguing mathematical properties of their first-price counterparts; namely, an equivalence with random-turn games in which in each turn, the player who moves is selected according to a (biased) coin toss. The equivalences for all-pay bidding are more intricate and unexpected than for first-price bidding."}],"article_processing_charge":"No","page":"617-636"},{"main_file_link":[{"url":"https://arxiv.org/abs/2105.15193","open_access":"1"}],"corr_author":"1","publication":"arXiv","doi":"10.48550/arXiv.2105.15193","year":"2021","date_created":"2022-02-17T11:18:57Z","title":"Artificial neural network states for non-additive systems","abstract":[{"lang":"eng","text":"Methods inspired from machine learning have recently attracted great interest in the computational study of quantum many-particle systems. So far, however, it has proven challenging to deal with microscopic models in which the total number of particles is not conserved. To address this issue, we propose a new variant of neural network states, which we term neural coherent states. Taking the Fröhlich impurity model as a case study, we show that neural coherent states can learn the ground state of non-additive systems very well. In particular, we observe substantial improvement over the standard coherent state estimates in the most challenging intermediate coupling regime. Our approach is generic and does not assume specific details of the system, suggesting wide applications."}],"publication_status":"draft","external_id":{"arxiv":["2105.15193"]},"page":"2105.15193","article_processing_charge":"No","related_material":{"record":[{"relation":"dissertation_contains","id":"10759","status":"public"}]},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","author":[{"last_name":"Rzadkowski","first_name":"Wojciech","full_name":"Rzadkowski, Wojciech","id":"48C55298-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-1106-4419"},{"id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-6990-7802","full_name":"Lemeshko, Mikhail","last_name":"Lemeshko","first_name":"Mikhail"},{"full_name":"Mentink, Johan H.","last_name":"Mentink","first_name":"Johan H."}],"project":[{"call_identifier":"H2020","name":"Angulon: physics and applications of a new quasiparticle","_id":"2688CF98-B435-11E9-9278-68D0E5697425","grant_number":"801770"},{"name":"International IST Doctoral Program","call_identifier":"H2020","grant_number":"665385","_id":"2564DBCA-B435-11E9-9278-68D0E5697425"}],"citation":{"apa":"Rzadkowski, W., Lemeshko, M., &#38; Mentink, J. H. (n.d.). Artificial neural network states for non-additive systems. <i>arXiv</i>. <a href=\"https://doi.org/10.48550/arXiv.2105.15193\">https://doi.org/10.48550/arXiv.2105.15193</a>","chicago":"Rzadkowski, Wojciech, Mikhail Lemeshko, and Johan H. Mentink. “Artificial Neural Network States for Non-Additive Systems.” <i>ArXiv</i>, n.d. <a href=\"https://doi.org/10.48550/arXiv.2105.15193\">https://doi.org/10.48550/arXiv.2105.15193</a>.","mla":"Rzadkowski, Wojciech, et al. “Artificial Neural Network States for Non-Additive Systems.” <i>ArXiv</i>, doi:<a href=\"https://doi.org/10.48550/arXiv.2105.15193\">10.48550/arXiv.2105.15193</a>.","short":"W. Rzadkowski, M. Lemeshko, J.H. Mentink, ArXiv (n.d.).","ieee":"W. Rzadkowski, M. Lemeshko, and J. H. Mentink, “Artificial neural network states for non-additive systems,” <i>arXiv</i>. .","ama":"Rzadkowski W, Lemeshko M, Mentink JH. Artificial neural network states for non-additive systems. <i>arXiv</i>. doi:<a href=\"https://doi.org/10.48550/arXiv.2105.15193\">10.48550/arXiv.2105.15193</a>","ista":"Rzadkowski W, Lemeshko M, Mentink JH. Artificial neural network states for non-additive systems. arXiv, <a href=\"https://doi.org/10.48550/arXiv.2105.15193\">10.48550/arXiv.2105.15193</a>."},"day":"31","status":"public","ec_funded":1,"department":[{"_id":"MiLe"}],"arxiv":1,"date_updated":"2026-04-07T14:20:12Z","language":[{"iso":"eng"}],"month":"05","date_published":"2021-05-31T00:00:00Z","oa":1,"_id":"10762","acknowledgement":"We acknowledge fruitful discussions with Giacomo Bighin, Giammarco Fabiani, Areg Ghazaryan, Christoph\r\nLampert, and Artem Volosniev at various stages of this work. W.R. is a recipient of a DOC Fellowship of the\r\nAustrian Academy of Sciences and has received funding from the EU Horizon 2020 programme under the Marie\r\nSkłodowska-Curie Grant Agreement No. 665385. M. L. acknowledges support by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). This work is part of the Shell-NWO/FOM-initiative “Computational sciences for energy research” of Shell and Chemical Sciences, Earth and Life Sciences, Physical Sciences, FOM and STW.","type":"preprint","oa_version":"Preprint"},{"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/2102.05996"}],"corr_author":"1","citation":{"mla":"Konstantinov, Nikola H., and Christoph Lampert. “Fairness through Regularization for Learning to Rank.” <i>ArXiv</i>, 2102.05996, doi:<a href=\"https://doi.org/10.48550/arXiv.2102.05996\">10.48550/arXiv.2102.05996</a>.","apa":"Konstantinov, N. H., &#38; Lampert, C. (n.d.). Fairness through regularization for learning to rank. <i>arXiv</i>. <a href=\"https://doi.org/10.48550/arXiv.2102.05996\">https://doi.org/10.48550/arXiv.2102.05996</a>","chicago":"Konstantinov, Nikola H, and Christoph Lampert. “Fairness through Regularization for Learning to Rank.” <i>ArXiv</i>, n.d. <a href=\"https://doi.org/10.48550/arXiv.2102.05996\">https://doi.org/10.48550/arXiv.2102.05996</a>.","ama":"Konstantinov NH, Lampert C. Fairness through regularization for learning to rank. <i>arXiv</i>. doi:<a href=\"https://doi.org/10.48550/arXiv.2102.05996\">10.48550/arXiv.2102.05996</a>","ista":"Konstantinov NH, Lampert C. Fairness through regularization for learning to rank. arXiv, 2102.05996.","short":"N.H. Konstantinov, C. Lampert, ArXiv (n.d.).","ieee":"N. H. Konstantinov and C. Lampert, “Fairness through regularization for learning to rank,” <i>arXiv</i>. ."},"doi":"10.48550/arXiv.2102.05996","publication":"arXiv","day":"07","status":"public","year":"2021","date_created":"2022-02-28T14:13:59Z","article_number":"2102.05996","title":"Fairness through regularization for learning to rank","language":[{"iso":"eng"}],"month":"06","date_published":"2021-06-07T00:00:00Z","department":[{"_id":"ChLa"}],"arxiv":1,"date_updated":"2026-04-07T14:19:48Z","article_processing_charge":"No","abstract":[{"text":"Given the abundance of applications of ranking in recent years, addressing fairness concerns around automated ranking systems becomes necessary for increasing the trust among end-users. Previous work on fair ranking has mostly focused on application-specific fairness notions, often tailored to online advertising, and it rarely considers learning as part of the process. In this work, we show how to transfer numerous fairness notions from binary classification to a learning to rank setting. Our formalism allows us to design methods for incorporating fairness objectives with provable generalization guarantees. An extensive experimental evaluation shows that our method can improve ranking fairness substantially with no or only little loss of model quality.","lang":"eng"}],"oa":1,"publication_status":"draft","external_id":{"arxiv":["2102.05996"]},"_id":"10803","related_material":{"record":[{"status":"public","id":"10799","relation":"dissertation_contains"}]},"author":[{"first_name":"Nikola H","last_name":"Konstantinov","id":"4B9D76E4-F248-11E8-B48F-1D18A9856A87","orcid":"0009-0009-5204-7621","full_name":"Konstantinov, Nikola H"},{"full_name":"Lampert, Christoph","orcid":"0000-0002-4561-241X","id":"40C20FD2-F248-11E8-B48F-1D18A9856A87","first_name":"Christoph","last_name":"Lampert"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","oa_version":"Preprint","type":"preprint"},{"article_type":"original","oa_version":"Published Version","intvolume":"         1","acknowledgement":"This work was financially supported by IST Austria and the Werner Siemens Foundation. M.C. has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 665385. The work was also financially supported by University of Basel, SNSF NCCR Molecular Systems Engineering (project number: 182895) and SNSF R’equip (project number: 189622). J.L. is a Serra Húnter Fellow and is grateful to ICREA Academia program and MICINN/FEDER RTI2018-093996-B-C31 and GC 2017 SGR 128 projects.","type":"journal_article","_id":"10806","scopus_import":"1","oa":1,"file_date_updated":"2022-03-02T15:33:18Z","language":[{"iso":"eng"}],"month":"11","date_published":"2021-11-22T00:00:00Z","publisher":"American Chemical Society","department":[{"_id":"MaIb"}],"date_updated":"2026-04-07T13:26:13Z","ec_funded":1,"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"day":"22","status":"public","citation":{"ama":"Calcabrini M, Van den Eynden D, Sanchez Ribot S, et al. Ligand conversion in nanocrystal synthesis: The oxidation of alkylamines to fatty acids by nitrate. <i>JACS Au</i>. 2021;1(11):1898-1903. doi:<a href=\"https://doi.org/10.1021/jacsau.1c00349\">10.1021/jacsau.1c00349</a>","ista":"Calcabrini M, Van den Eynden D, Sanchez Ribot S, Pokratath R, Llorca J, De Roo J, Ibáñez M. 2021. Ligand conversion in nanocrystal synthesis: The oxidation of alkylamines to fatty acids by nitrate. JACS Au. 1(11), 1898–1903.","short":"M. Calcabrini, D. Van den Eynden, S. Sanchez Ribot, R. Pokratath, J. Llorca, J. De Roo, M. Ibáñez, JACS Au 1 (2021) 1898–1903.","ieee":"M. Calcabrini <i>et al.</i>, “Ligand conversion in nanocrystal synthesis: The oxidation of alkylamines to fatty acids by nitrate,” <i>JACS Au</i>, vol. 1, no. 11. American Chemical Society, pp. 1898–1903, 2021.","mla":"Calcabrini, Mariano, et al. “Ligand Conversion in Nanocrystal Synthesis: The Oxidation of Alkylamines to Fatty Acids by Nitrate.” <i>JACS Au</i>, vol. 1, no. 11, American Chemical Society, 2021, pp. 1898–903, doi:<a href=\"https://doi.org/10.1021/jacsau.1c00349\">10.1021/jacsau.1c00349</a>.","apa":"Calcabrini, M., Van den Eynden, D., Sanchez Ribot, S., Pokratath, R., Llorca, J., De Roo, J., &#38; Ibáñez, M. (2021). Ligand conversion in nanocrystal synthesis: The oxidation of alkylamines to fatty acids by nitrate. <i>JACS Au</i>. American Chemical Society. <a href=\"https://doi.org/10.1021/jacsau.1c00349\">https://doi.org/10.1021/jacsau.1c00349</a>","chicago":"Calcabrini, Mariano, Dietger Van den Eynden, Sergi Sanchez Ribot, Rohan Pokratath, Jordi Llorca, Jonathan De Roo, and Maria Ibáñez. “Ligand Conversion in Nanocrystal Synthesis: The Oxidation of Alkylamines to Fatty Acids by Nitrate.” <i>JACS Au</i>. American Chemical Society, 2021. <a href=\"https://doi.org/10.1021/jacsau.1c00349\">https://doi.org/10.1021/jacsau.1c00349</a>."},"project":[{"call_identifier":"H2020","name":"International IST Doctoral Program","_id":"2564DBCA-B435-11E9-9278-68D0E5697425","grant_number":"665385"},{"_id":"9B8F7476-BA93-11EA-9121-9846C619BF3A","name":"HighTE: The Werner Siemens Laboratory for the High Throughput Discovery of Semiconductors for Waste Heat Recovery"},{"name":"IST Austria Open Access Fund","_id":"B67AFEDC-15C9-11EA-A837-991A96BB2854"}],"user_id":"8b945eb4-e2f2-11eb-945a-df72226e66a9","author":[{"last_name":"Calcabrini","first_name":"Mariano","full_name":"Calcabrini, Mariano","orcid":"0000-0003-4566-5877","id":"45D7531A-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Van den Eynden","first_name":"Dietger","full_name":"Van den Eynden, Dietger"},{"full_name":"Sanchez Ribot, Sergi","id":"ddae5a59-f6e0-11ea-865d-d9dc61e77a2a","last_name":"Sanchez Ribot","first_name":"Sergi"},{"first_name":"Rohan","last_name":"Pokratath","full_name":"Pokratath, Rohan"},{"last_name":"Llorca","first_name":"Jordi","full_name":"Llorca, Jordi"},{"last_name":"De Roo","first_name":"Jonathan","full_name":"De Roo, Jonathan"},{"id":"43C61214-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-5013-2843","full_name":"Ibáñez, Maria","first_name":"Maria","last_name":"Ibáñez"}],"volume":1,"related_material":{"link":[{"relation":"earlier_version","url":"https://doi.org/10.26434/chemrxiv-2021-cn2fr"}],"record":[{"id":"12885","relation":"dissertation_contains","status":"public"}]},"page":"1898-1903","article_processing_charge":"Yes (via OA deal)","abstract":[{"lang":"eng","text":"Ligands are a fundamental part of nanocrystals. They control and direct nanocrystal syntheses and provide colloidal stability. Bound ligands also affect the nanocrystals’ chemical reactivity and electronic structure. Surface chemistry is thus crucial to understand nanocrystal properties and functionality. Here, we investigate the synthesis of metal oxide nanocrystals (CeO2-x, ZnO, and NiO) from metal nitrate precursors, in the presence of oleylamine ligands. Surprisingly, the nanocrystals are capped exclusively with a fatty acid instead of oleylamine. Analysis of the reaction mixtures with nuclear magnetic resonance spectroscopy revealed several reaction byproducts and intermediates that are common to the decomposition of Ce, Zn, Ni, and Zr nitrate precursors. Our evidence supports the oxidation of alkylamine and formation of a carboxylic acid, thus unraveling this counterintuitive surface chemistry."}],"publication_status":"published","title":"Ligand conversion in nanocrystal synthesis: The oxidation of alkylamines to fatty acids by nitrate","keyword":["general medicine"],"year":"2021","date_created":"2022-03-02T15:24:16Z","issue":"11","publication_identifier":{"issn":["2691-3704"],"eissn":["2691-3704"]},"doi":"10.1021/jacsau.1c00349","publication":"JACS Au","corr_author":"1","quality_controlled":"1","file":[{"file_id":"10807","file_size":1257973,"date_updated":"2022-03-02T15:33:18Z","access_level":"open_access","relation":"main_file","checksum":"1c66a35369e911312a359111420318a9","file_name":"2021_JACSAu_Calcabrini.pdf","content_type":"application/pdf","date_created":"2022-03-02T15:33:18Z","success":1,"creator":"cchlebak"}],"has_accepted_license":"1","ddc":["540"]},{"ec_funded":1,"day":"01","status":"public","citation":{"chicago":"Boccato, Chiara. “The Excitation Spectrum of the Bose Gas in the Gross-Pitaevskii Regime.” <i>Reviews in Mathematical Physics</i>. World Scientific Publishing, 2021. <a href=\"https://doi.org/10.1142/S0129055X20600065\">https://doi.org/10.1142/S0129055X20600065</a>.","apa":"Boccato, C. (2021). The excitation spectrum of the Bose gas in the Gross-Pitaevskii regime. <i>Reviews in Mathematical Physics</i>. World Scientific Publishing. <a href=\"https://doi.org/10.1142/S0129055X20600065\">https://doi.org/10.1142/S0129055X20600065</a>","mla":"Boccato, Chiara. “The Excitation Spectrum of the Bose Gas in the Gross-Pitaevskii Regime.” <i>Reviews in Mathematical Physics</i>, vol. 33, no. 1, 2060006, World Scientific Publishing, 2021, doi:<a href=\"https://doi.org/10.1142/S0129055X20600065\">10.1142/S0129055X20600065</a>.","short":"C. Boccato, Reviews in Mathematical Physics 33 (2021).","ieee":"C. Boccato, “The excitation spectrum of the Bose gas in the Gross-Pitaevskii regime,” <i>Reviews in Mathematical Physics</i>, vol. 33, no. 1. World Scientific Publishing, 2021.","ista":"Boccato C. 2021. The excitation spectrum of the Bose gas in the Gross-Pitaevskii regime. Reviews in Mathematical Physics. 33(1), 2060006.","ama":"Boccato C. The excitation spectrum of the Bose gas in the Gross-Pitaevskii regime. <i>Reviews in Mathematical Physics</i>. 2021;33(1). doi:<a href=\"https://doi.org/10.1142/S0129055X20600065\">10.1142/S0129055X20600065</a>"},"project":[{"call_identifier":"H2020","name":"Analysis of quantum many-body systems","_id":"25C6DC12-B435-11E9-9278-68D0E5697425","grant_number":"694227"}],"oa_version":"Preprint","intvolume":"        33","article_type":"original","type":"journal_article","scopus_import":"1","_id":"7685","isi":1,"oa":1,"date_published":"2021-01-01T00:00:00Z","language":[{"iso":"eng"}],"month":"01","date_updated":"2025-05-14T10:49:57Z","arxiv":1,"publisher":"World Scientific Publishing","department":[{"_id":"RoSe"}],"date_created":"2020-04-26T22:00:45Z","year":"2021","article_number":"2060006","doi":"10.1142/S0129055X20600065","publication_identifier":{"issn":["0129-055X"]},"issue":"1","publication":"Reviews in Mathematical Physics","quality_controlled":"1","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/2001.00497"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","author":[{"full_name":"Boccato, Chiara","id":"342E7E22-F248-11E8-B48F-1D18A9856A87","last_name":"Boccato","first_name":"Chiara"}],"volume":33,"article_processing_charge":"No","external_id":{"isi":["000613313200007"],"arxiv":["2001.00497"]},"publication_status":"published","abstract":[{"lang":"eng","text":"We consider a gas of interacting bosons trapped in a box of side length one in the Gross–Pitaevskii limit. We review the proof of the validity of Bogoliubov’s prediction for the ground state energy and the low-energy excitation spectrum. This note is based on joint work with C. Brennecke, S. Cenatiempo and B. Schlein."}],"title":"The excitation spectrum of the Bose gas in the Gross-Pitaevskii regime"},{"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1910.08190"}],"quality_controlled":"1","issue":"1","publication_identifier":{"issn":["0129-055X"],"eissn":["1793-6659"]},"doi":"10.1142/s0129055x20600090","publication":"Reviews in Mathematical Physics","year":"2021","date_created":"2020-05-28T16:47:55Z","article_number":"2060009","title":"Bosonic collective excitations in Fermi gases","article_processing_charge":"No","abstract":[{"lang":"eng","text":"Hartree–Fock theory has been justified as a mean-field approximation for fermionic systems. However, it suffers from some defects in predicting physical properties, making necessary a theory of quantum correlations. Recently, bosonization of many-body correlations has been rigorously justified as an upper bound on the correlation energy at high density with weak interactions. We review the bosonic approximation, deriving an effective Hamiltonian. We then show that for systems with Coulomb interaction this effective theory predicts collective excitations (plasmons) in accordance with the random phase approximation of Bohm and Pines, and with experimental observation."}],"publication_status":"published","external_id":{"arxiv":["1910.08190"],"isi":["000613313200010"]},"author":[{"id":"3DE6C32A-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-1071-6091","full_name":"Benedikter, Niels P","first_name":"Niels P","last_name":"Benedikter"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","volume":33,"citation":{"ista":"Benedikter NP. 2021. Bosonic collective excitations in Fermi gases. Reviews in Mathematical Physics. 33(1), 2060009.","ama":"Benedikter NP. Bosonic collective excitations in Fermi gases. <i>Reviews in Mathematical Physics</i>. 2021;33(1). doi:<a href=\"https://doi.org/10.1142/s0129055x20600090\">10.1142/s0129055x20600090</a>","ieee":"N. P. Benedikter, “Bosonic collective excitations in Fermi gases,” <i>Reviews in Mathematical Physics</i>, vol. 33, no. 1. World Scientific Publishing, 2021.","short":"N.P. Benedikter, Reviews in Mathematical Physics 33 (2021).","mla":"Benedikter, Niels P. “Bosonic Collective Excitations in Fermi Gases.” <i>Reviews in Mathematical Physics</i>, vol. 33, no. 1, 2060009, World Scientific Publishing, 2021, doi:<a href=\"https://doi.org/10.1142/s0129055x20600090\">10.1142/s0129055x20600090</a>.","apa":"Benedikter, N. P. (2021). Bosonic collective excitations in Fermi gases. <i>Reviews in Mathematical Physics</i>. World Scientific Publishing. <a href=\"https://doi.org/10.1142/s0129055x20600090\">https://doi.org/10.1142/s0129055x20600090</a>","chicago":"Benedikter, Niels P. “Bosonic Collective Excitations in Fermi Gases.” <i>Reviews in Mathematical Physics</i>. World Scientific Publishing, 2021. <a href=\"https://doi.org/10.1142/s0129055x20600090\">https://doi.org/10.1142/s0129055x20600090</a>."},"project":[{"grant_number":"694227","_id":"25C6DC12-B435-11E9-9278-68D0E5697425","name":"Analysis of quantum many-body systems","call_identifier":"H2020"}],"status":"public","day":"01","ec_funded":1,"month":"01","language":[{"iso":"eng"}],"date_published":"2021-01-01T00:00:00Z","publisher":"World Scientific Publishing","arxiv":1,"department":[{"_id":"RoSe"}],"date_updated":"2025-05-14T10:49:46Z","isi":1,"oa":1,"_id":"7900","scopus_import":"1","article_type":"original","oa_version":"Preprint","intvolume":"        33","type":"journal_article"},{"publication_identifier":{"issn":["0020-9910"],"eissn":["1432-1297"]},"doi":"10.1007/s00222-021-01041-5","publication":"Inventiones Mathematicae","year":"2021","date_created":"2020-05-28T16:48:20Z","has_accepted_license":"1","ddc":["510"],"quality_controlled":"1","file":[{"file_id":"11386","access_level":"open_access","checksum":"f38c79dfd828cdc7f49a34b37b83d376","relation":"main_file","file_size":1089319,"date_updated":"2022-05-16T12:23:40Z","date_created":"2022-05-16T12:23:40Z","file_name":"2021_InventMath_Benedikter.pdf","content_type":"application/pdf","success":1,"creator":"dernst"}],"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","author":[{"full_name":"Benedikter, Niels P","id":"3DE6C32A-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-1071-6091","first_name":"Niels P","last_name":"Benedikter"},{"last_name":"Nam","first_name":"Phan Thành","full_name":"Nam, Phan Thành"},{"last_name":"Porta","first_name":"Marcello","full_name":"Porta, Marcello"},{"first_name":"Benjamin","last_name":"Schlein","full_name":"Schlein, Benjamin"},{"orcid":"0000-0002-6781-0521","id":"4AFD0470-F248-11E8-B48F-1D18A9856A87","full_name":"Seiringer, Robert","first_name":"Robert","last_name":"Seiringer"}],"volume":225,"title":"Correlation energy of a weakly interacting Fermi gas","page":"885-979","article_processing_charge":"Yes (via OA deal)","abstract":[{"lang":"eng","text":"We derive rigorously the leading order of the correlation energy of a Fermi gas in a scaling regime of high density and weak interaction. The result verifies the prediction of the random-phase approximation. Our proof refines the method of collective bosonization in three dimensions. We approximately diagonalize an effective Hamiltonian describing approximately bosonic collective excitations around the Hartree–Fock state, while showing that gapless and non-collective excitations have only a negligible effect on the ground state energy."}],"publication_status":"published","external_id":{"arxiv":["2005.08933"],"isi":["000646573600001"]},"status":"public","day":"03","ec_funded":1,"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"citation":{"apa":"Benedikter, N. P., Nam, P. T., Porta, M., Schlein, B., &#38; Seiringer, R. (2021). Correlation energy of a weakly interacting Fermi gas. <i>Inventiones Mathematicae</i>. Springer. <a href=\"https://doi.org/10.1007/s00222-021-01041-5\">https://doi.org/10.1007/s00222-021-01041-5</a>","chicago":"Benedikter, Niels P, Phan Thành Nam, Marcello Porta, Benjamin Schlein, and Robert Seiringer. “Correlation Energy of a Weakly Interacting Fermi Gas.” <i>Inventiones Mathematicae</i>. Springer, 2021. <a href=\"https://doi.org/10.1007/s00222-021-01041-5\">https://doi.org/10.1007/s00222-021-01041-5</a>.","mla":"Benedikter, Niels P., et al. “Correlation Energy of a Weakly Interacting Fermi Gas.” <i>Inventiones Mathematicae</i>, vol. 225, Springer, 2021, pp. 885–979, doi:<a href=\"https://doi.org/10.1007/s00222-021-01041-5\">10.1007/s00222-021-01041-5</a>.","short":"N.P. Benedikter, P.T. Nam, M. Porta, B. Schlein, R. Seiringer, Inventiones Mathematicae 225 (2021) 885–979.","ieee":"N. P. Benedikter, P. T. Nam, M. Porta, B. Schlein, and R. Seiringer, “Correlation energy of a weakly interacting Fermi gas,” <i>Inventiones Mathematicae</i>, vol. 225. Springer, pp. 885–979, 2021.","ista":"Benedikter NP, Nam PT, Porta M, Schlein B, Seiringer R. 2021. Correlation energy of a weakly interacting Fermi gas. Inventiones Mathematicae. 225, 885–979.","ama":"Benedikter NP, Nam PT, Porta M, Schlein B, Seiringer R. Correlation energy of a weakly interacting Fermi gas. <i>Inventiones Mathematicae</i>. 2021;225:885-979. doi:<a href=\"https://doi.org/10.1007/s00222-021-01041-5\">10.1007/s00222-021-01041-5</a>"},"project":[{"name":"IST Austria Open Access Fund","_id":"B67AFEDC-15C9-11EA-A837-991A96BB2854"},{"_id":"25C6DC12-B435-11E9-9278-68D0E5697425","grant_number":"694227","call_identifier":"H2020","name":"Analysis of quantum many-body systems"}],"_id":"7901","scopus_import":"1","article_type":"original","oa_version":"Published Version","intvolume":"       225","acknowledgement":"We thank Christian Hainzl for helpful discussions and a referee for very careful reading of the paper and many helpful suggestions. NB and RS were supported by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No. 694227). Part of the research of NB was conducted on the RZD18 Nice–Milan–Vienna–Moscow. NB thanks Elliott H. Lieb and Peter Otte for explanations about the Luttinger model. PTN has received funding from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy (EXC-2111-390814868). MP acknowledges financial support from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (ERC StG MaMBoQ, grant agreement No. 802901). BS gratefully acknowledges financial support from the NCCR SwissMAP, from the Swiss National Science Foundation through the Grant “Dynamical and energetic properties of Bose-Einstein condensates” and from the European Research Council through the ERC-AdG CLaQS (grant agreement No. 834782). All authors acknowledge support for workshop participation from Mathematisches Forschungsinstitut Oberwolfach (Leibniz Association). NB, PTN, BS, and RS acknowledge support for workshop participation from Fondation des Treilles.","type":"journal_article","month":"05","language":[{"iso":"eng"}],"date_published":"2021-05-03T00:00:00Z","publisher":"Springer","department":[{"_id":"RoSe"}],"arxiv":1,"date_updated":"2025-04-14T07:27:00Z","isi":1,"oa":1,"file_date_updated":"2022-05-16T12:23:40Z"}]