--- _id: '10353' abstract: - lang: eng text: Experiments have suggested that bacterial mechanosensitive channels separate into 2D clusters, the role of which is unclear. By developing a coarse-grained computer model we find that clustering promotes the channel closure, which is highly dependent on the channel concentration and membrane stress. This behaviour yields a tightly regulated gating system, whereby at high tensions channels gate individually, and at lower tensions the channels spontaneously aggregate and inactivate. We implement this positive feedback into the model for cell volume regulation, and find that the channel clustering protects the cell against excessive loss of cytoplasmic content. acknowledgement: We thank Samantha Miller, Bert Poolman, and the members of Šarić and Pilizota laboratories for useful discussion. We acknowledge support from the Engineering and Physical Sciences Research Council (A.P. and A.Š.), the UCL Institute for the Physics of Living Systems (A.P. and A.Š.), Darwin Trust of University of Edinburgh (H.S.), Industrial Biotechnology Innovation Centre (H.S. and T.P.), BBSRC Council Crossing Biological Membrane Network (H.S. and T.P.), BBSRC/EPSRC/MRC Synthetic Biology Research Centre (T.P.), and the Royal Society (A.Š.). article_number: '048102' article_processing_charge: No article_type: original author: - first_name: Alexandru full_name: Paraschiv, Alexandru last_name: Paraschiv - first_name: Smitha full_name: Hegde, Smitha last_name: Hegde - first_name: Raman full_name: Ganti, Raman last_name: Ganti - first_name: Teuta full_name: Pilizota, Teuta last_name: Pilizota - first_name: Anđela full_name: Šarić, Anđela id: bf63d406-f056-11eb-b41d-f263a6566d8b last_name: Šarić orcid: 0000-0002-7854-2139 citation: ama: Paraschiv A, Hegde S, Ganti R, Pilizota T, Šarić A. Dynamic clustering regulates activity of mechanosensitive membrane channels. Physical Review Letters. 2020;124(4). doi:10.1103/physrevlett.124.048102 apa: Paraschiv, A., Hegde, S., Ganti, R., Pilizota, T., & Šarić, A. (2020). Dynamic clustering regulates activity of mechanosensitive membrane channels. Physical Review Letters. American Physical Society. https://doi.org/10.1103/physrevlett.124.048102 chicago: Paraschiv, Alexandru, Smitha Hegde, Raman Ganti, Teuta Pilizota, and Anđela Šarić. “Dynamic Clustering Regulates Activity of Mechanosensitive Membrane Channels.” Physical Review Letters. American Physical Society, 2020. https://doi.org/10.1103/physrevlett.124.048102. ieee: A. Paraschiv, S. Hegde, R. Ganti, T. Pilizota, and A. Šarić, “Dynamic clustering regulates activity of mechanosensitive membrane channels,” Physical Review Letters, vol. 124, no. 4. American Physical Society, 2020. ista: Paraschiv A, Hegde S, Ganti R, Pilizota T, Šarić A. 2020. Dynamic clustering regulates activity of mechanosensitive membrane channels. Physical Review Letters. 124(4), 048102. mla: Paraschiv, Alexandru, et al. “Dynamic Clustering Regulates Activity of Mechanosensitive Membrane Channels.” Physical Review Letters, vol. 124, no. 4, 048102, American Physical Society, 2020, doi:10.1103/physrevlett.124.048102. short: A. Paraschiv, S. Hegde, R. Ganti, T. Pilizota, A. Šarić, Physical Review Letters 124 (2020). date_created: 2021-11-26T09:57:01Z date_published: 2020-01-31T00:00:00Z date_updated: 2021-11-26T11:21:12Z day: '31' doi: 10.1103/physrevlett.124.048102 extern: '1' external_id: pmid: - '32058787' intvolume: ' 124' issue: '4' keyword: - general physics and astronomy language: - iso: eng main_file_link: - open_access: '1' url: https://www.biorxiv.org/content/10.1101/553248 month: '01' oa: 1 oa_version: Preprint pmid: 1 publication: Physical Review Letters publication_identifier: eissn: - 1079-7114 issn: - 0031-9007 publication_status: published publisher: American Physical Society quality_controlled: '1' scopus_import: '1' status: public title: Dynamic clustering regulates activity of mechanosensitive membrane channels type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 124 year: '2020' ... --- _id: '10556' abstract: - lang: eng text: In this paper, we present the first Asynchronous Distributed Key Generation (ADKG) algorithm which is also the first distributed key generation algorithm that can generate cryptographic keys with a dual (f,2f+1)-threshold (where f is the number of faulty parties). As a result, using our ADKG we remove the trusted setup assumption that the most scalable consensus algorithms make. In order to create a DKG with a dual (f,2f+1)- threshold we first answer in the affirmative the open question posed by Cachin et al. [7] on how to create an Asynchronous Verifiable Secret Sharing (AVSS) protocol with a reconstruction threshold of f+1Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security. Association for Computing Machinery; 2020:1751–1767. doi:10.1145/3372297.3423364' apa: 'Kokoris Kogias, E., Malkhi, D., & Spiegelman, A. (2020). Asynchronous distributed key generation for computationally-secure randomness, consensus, and threshold signatures. In Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security (pp. 1751–1767). Virtual, United States: Association for Computing Machinery. https://doi.org/10.1145/3372297.3423364' chicago: Kokoris Kogias, Eleftherios, Dahlia Malkhi, and Alexander Spiegelman. “Asynchronous Distributed Key Generation for Computationally-Secure Randomness, Consensus, and Threshold Signatures.” In Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security, 1751–1767. Association for Computing Machinery, 2020. https://doi.org/10.1145/3372297.3423364. ieee: E. Kokoris Kogias, D. Malkhi, and A. Spiegelman, “Asynchronous distributed key generation for computationally-secure randomness, consensus, and threshold signatures,” in Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security, Virtual, United States, 2020, pp. 1751–1767. ista: 'Kokoris Kogias E, Malkhi D, Spiegelman A. 2020. Asynchronous distributed key generation for computationally-secure randomness, consensus, and threshold signatures. Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security. CCS: Conference on Computer and Communications Security, 1751–1767.' mla: Kokoris Kogias, Eleftherios, et al. “Asynchronous Distributed Key Generation for Computationally-Secure Randomness, Consensus, and Threshold Signatures.” Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security, Association for Computing Machinery, 2020, pp. 1751–1767, doi:10.1145/3372297.3423364. short: E. Kokoris Kogias, D. Malkhi, A. Spiegelman, in:, Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security, Association for Computing Machinery, 2020, pp. 1751–1767. conference: end_date: 2020-11-13 location: Virtual, United States name: 'CCS: Conference on Computer and Communications Security' start_date: 2020-11-09 date_created: 2021-12-16T13:23:27Z date_published: 2020-10-30T00:00:00Z date_updated: 2025-07-10T11:49:52Z day: '30' department: - _id: ElKo doi: 10.1145/3372297.3423364 external_id: isi: - '000768470400104' isi: 1 language: - iso: eng main_file_link: - open_access: '1' url: https://eprint.iacr.org/2019/1015 month: '10' oa: 1 oa_version: Preprint page: 1751–1767 publication: Proceedings of the 2020 ACM SIGSAC Conference on Computer and Communications Security publication_identifier: isbn: - 978-1-4503-7089-9 publication_status: published publisher: Association for Computing Machinery quality_controlled: '1' scopus_import: '1' status: public title: Asynchronous distributed key generation for computationally-secure randomness, consensus, and threshold signatures type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2020' ... --- _id: '10557' abstract: - lang: eng text: Data storage and retrieval systems, methods, and computer-readable media utilize a cryptographically verifiable data structure that facilitates verification of a transaction in a decentralized peer-to-peer environment using multi-hop backwards and forwards links. Backward links are cryptographic hashes of past records. Forward links are cryptographic signatures of future records that are added retroactively to records once the target block has been appended to the data structure. applicant: - Ecole Polytechnique Federale de Lausanne application_date: 2017-06-09 article_processing_charge: No author: - first_name: Bryan full_name: Ford, Bryan last_name: Ford - first_name: Linus full_name: Gasse, Linus last_name: Gasse - first_name: Eleftherios full_name: Kokoris Kogias, Eleftherios id: f5983044-d7ef-11ea-ac6d-fd1430a26d30 last_name: Kokoris Kogias - first_name: Philipp full_name: Jovanovic, Philipp last_name: Jovanovic citation: ama: Ford B, Gasse L, Kokoris Kogias E, Jovanovic P. Cryptographically verifiable data structure having multi-hop forward and backwards links and associated systems and methods. 2020. apa: Ford, B., Gasse, L., Kokoris Kogias, E., & Jovanovic, P. (2020). Cryptographically verifiable data structure having multi-hop forward and backwards links and associated systems and methods. chicago: Ford, Bryan, Linus Gasse, Eleftherios Kokoris Kogias, and Philipp Jovanovic. “Cryptographically Verifiable Data Structure Having Multi-Hop Forward and Backwards Links and Associated Systems and Methods,” 2020. ieee: B. Ford, L. Gasse, E. Kokoris Kogias, and P. Jovanovic, “Cryptographically verifiable data structure having multi-hop forward and backwards links and associated systems and methods.” 2020. ista: Ford B, Gasse L, Kokoris Kogias E, Jovanovic P. 2020. Cryptographically verifiable data structure having multi-hop forward and backwards links and associated systems and methods. mla: Ford, Bryan, et al. Cryptographically Verifiable Data Structure Having Multi-Hop Forward and Backwards Links and Associated Systems and Methods. 2020. short: B. Ford, L. Gasse, E. Kokoris Kogias, P. Jovanovic, (2020). date_created: 2021-12-16T13:28:59Z date_published: 2020-03-03T00:00:00Z date_updated: 2021-12-21T10:04:50Z day: '03' department: - _id: ElKo extern: '1' ipc: ' H04L9/3247 ; G06Q20/29 ; G06Q20/382 ; H04L9/3236' ipn: '10581613' main_file_link: - open_access: '1' url: https://patents.google.com/patent/US10581613B2/en month: '03' oa: 1 oa_version: Published Version publication_date: 2020-03-03 related_material: link: - relation: earlier_version url: https://patents.google.com/patent/US20180359096A1/en status: public title: Cryptographically verifiable data structure having multi-hop forward and backwards links and associated systems and methods type: patent user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 year: '2020' ... --- _id: '10618' abstract: - lang: eng text: Magnetism typically arises from the joint effect of Fermi statistics and repulsive Coulomb interactions, which favours ground states with non-zero electron spin. As a result, controlling spin magnetism with electric fields—a longstanding technological goal in spintronics and multiferroics1,2—can be achieved only indirectly. Here we experimentally demonstrate direct electric-field control of magnetic states in an orbital Chern insulator3,4,5,6, a magnetic system in which non-trivial band topology favours long-range order of orbital angular momentum but the spins are thought to remain disordered7,8,9,10,11,12,13,14. We use van der Waals heterostructures consisting of a graphene monolayer rotationally faulted with respect to a Bernal-stacked bilayer to realize narrow and topologically non-trivial valley-projected moiré minibands15,16,17. At fillings of one and three electrons per moiré unit cell within these bands, we observe quantized anomalous Hall effects18 with transverse resistance approximately equal to h/2e2 (where h is Planck’s constant and e is the charge on the electron), which is indicative of spontaneous polarization of the system into a single-valley-projected band with a Chern number equal to two. At a filling of three electrons per moiré unit cell, we find that the sign of the quantum anomalous Hall effect can be reversed via field-effect control of the chemical potential; moreover, this transition is hysteretic, which we use to demonstrate non-volatile electric-field-induced reversal of the magnetic state. A theoretical analysis19 indicates that the effect arises from the topological edge states, which drive a change in sign of the magnetization and thus a reversal in the favoured magnetic state. Voltage control of magnetic states can be used to electrically pattern non-volatile magnetic-domain structures hosting chiral edge states, with applications ranging from reconfigurable microwave circuit elements to ultralow-power magnetic memories. acknowledgement: We acknowledge discussions with J. Checkelsky, S. Chen, C. Dean, M. Yankowitz, D. Reilly, I. Sodemann and M. Zaletel. Work at UCSB was primarily supported by the ARO under MURI W911NF-16-1-0361. Measurements of twisted bilayer graphene (Extended Data Fig. 8) and measurements at elevated temperatures (Extended Data Fig. 3) were supported by a SEED grant and made use of shared facilities of the UCSB MRSEC (NSF DMR 1720256), a member of the Materials Research Facilities Network (www.mrfn.org). A.F.Y. acknowledges the support of the David and Lucille Packard Foundation under award 2016-65145. A.H.M. and J.Z. were supported by the National Science Foundation through the Center for Dynamics and Control of Materials, an NSF MRSEC under Cooperative Agreement number DMR-1720595, and by the Welch Foundation under grant TBF1473. C.L.T. acknowledges support from the Hertz Foundation and from the National Science Foundation Graduate Research Fellowship Program under grant 1650114. K.W. and T.T. acknowledge support from the Elemental Strategy Initiative conducted by the MEXT, Japan, Grant Number JPMXP0112101001, JSPS KAKENHI grant numbers JP20H00354 and the CREST(JPMJCR15F3), JST. article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Hryhoriy full_name: Polshyn, Hryhoriy id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48 last_name: Polshyn orcid: 0000-0001-8223-8896 - first_name: J. full_name: Zhu, J. last_name: Zhu - first_name: M. A. full_name: Kumar, M. A. last_name: Kumar - first_name: Y. full_name: Zhang, Y. last_name: Zhang - first_name: F. full_name: Yang, F. last_name: Yang - first_name: C. L. full_name: Tschirhart, C. L. last_name: Tschirhart - first_name: M. full_name: Serlin, M. last_name: Serlin - first_name: K. full_name: Watanabe, K. last_name: Watanabe - first_name: T. full_name: Taniguchi, T. last_name: Taniguchi - first_name: A. H. full_name: MacDonald, A. H. last_name: MacDonald - first_name: A. F. full_name: Young, A. F. last_name: Young citation: ama: Polshyn H, Zhu J, Kumar MA, et al. Electrical switching of magnetic order in an orbital Chern insulator. Nature. 2020;588(7836):66-70. doi:10.1038/s41586-020-2963-8 apa: Polshyn, H., Zhu, J., Kumar, M. A., Zhang, Y., Yang, F., Tschirhart, C. L., … Young, A. F. (2020). Electrical switching of magnetic order in an orbital Chern insulator. Nature. Springer Nature. https://doi.org/10.1038/s41586-020-2963-8 chicago: Polshyn, Hryhoriy, J. Zhu, M. A. Kumar, Y. Zhang, F. Yang, C. L. Tschirhart, M. Serlin, et al. “Electrical Switching of Magnetic Order in an Orbital Chern Insulator.” Nature. Springer Nature, 2020. https://doi.org/10.1038/s41586-020-2963-8. ieee: H. Polshyn et al., “Electrical switching of magnetic order in an orbital Chern insulator,” Nature, vol. 588, no. 7836. Springer Nature, pp. 66–70, 2020. ista: Polshyn H, Zhu J, Kumar MA, Zhang Y, Yang F, Tschirhart CL, Serlin M, Watanabe K, Taniguchi T, MacDonald AH, Young AF. 2020. Electrical switching of magnetic order in an orbital Chern insulator. Nature. 588(7836), 66–70. mla: Polshyn, Hryhoriy, et al. “Electrical Switching of Magnetic Order in an Orbital Chern Insulator.” Nature, vol. 588, no. 7836, Springer Nature, 2020, pp. 66–70, doi:10.1038/s41586-020-2963-8. short: H. Polshyn, J. Zhu, M.A. Kumar, Y. Zhang, F. Yang, C.L. Tschirhart, M. Serlin, K. Watanabe, T. Taniguchi, A.H. MacDonald, A.F. Young, Nature 588 (2020) 66–70. date_created: 2022-01-13T14:12:17Z date_published: 2020-11-23T00:00:00Z date_updated: 2022-01-13T14:21:04Z day: '23' doi: 10.1038/s41586-020-2963-8 extern: '1' external_id: arxiv: - '2004.11353' pmid: - '33230333' intvolume: ' 588' issue: '7836' keyword: - multidisciplinary language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2004.11353 month: '11' oa: 1 oa_version: Preprint page: 66-70 pmid: 1 publication: Nature publication_identifier: eissn: - 1476-4687 issn: - 0028-0836 publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: Electrical switching of magnetic order in an orbital Chern insulator type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 588 year: '2020' ... --- _id: '10650' abstract: - lang: eng text: The understanding of material systems with strong electron-electron interactions is the central problem in modern condensed matter physics. Despite this, the essential physics of many of these materials is still not understood and we have no overall perspective on their properties. Moreover, we have very little ability to make predictions in this class of systems. In this manuscript we share our personal views of what the major open problems are in correlated electron systems and we discuss some possible routes to make progress in this rich and fascinating field. This manuscript is the result of the vigorous discussions and deliberations that took place at Johns Hopkins University during a three-day workshop January 27, 28, and 29, 2020 that brought together six senior scientists and 46 more junior scientists. Our hope, is that the topics we have presented will provide inspiration for others working in this field and motivation for the idea that significant progress can be made on very hard problems if we focus our collective energies. acknowledgement: "We thank NSF CMP program for suggestions regarding the topic and general structure of the workshop. This project was supported by the NSF DMR-2002329 and The Gordon and Betty Moore Foundation (GBMF) EPiQS initiative. We would like to sincerely thank A. Kapitulnik, A. J. Leggett, M.B. Maple, T.M. McQueen, M. Norman, P. S. Riseborough, and G. A. Sawatzky for their lectures at the workshop and advice on the writing of this manuscript. We would also like to thank G. Blumberg, C. Broholm, S. Crooker, N. Drichko, and A. Patel for helpful consultation on topics discussed\r\nherein. A number of individuals also had independent support: (AA, EH; GBMF-4305), (IMH; GBMF-9071), (HJC; NHMFL is supported by the NSF DMR-1644779 and the state of Florida), (YH, AZ; Miller Institute for Basic Research in Science), (YC; US DOE-BES DEAC02-06CH11357), (AS; Spallation Neutron Source, a DOE Office of Science User Facility operated by ORNL), (SAAG; ARO-W911NF-18-1-0290, NSF DMR-1455233), (YW; DOE-BES DE-SC0019331, GBMF-4532)." article_processing_charge: No arxiv: 1 author: - first_name: A full_name: Alexandradinata, A last_name: Alexandradinata - first_name: N.P. full_name: Armitage, N.P. last_name: Armitage - first_name: Andrey full_name: Baydin, Andrey last_name: Baydin - first_name: Wenli full_name: Bi, Wenli last_name: Bi - first_name: Yue full_name: Cao, Yue last_name: Cao - first_name: Hitesh J. full_name: Changlani, Hitesh J. last_name: Changlani - first_name: Eli full_name: Chertkov, Eli last_name: Chertkov - first_name: Eduardo H. full_name: da Silva Neto, Eduardo H. last_name: da Silva Neto - first_name: Luca full_name: Delacretaz, Luca last_name: Delacretaz - first_name: Ismail full_name: El Baggari, Ismail last_name: El Baggari - first_name: G.M. full_name: Ferguson, G.M. last_name: Ferguson - first_name: William J. full_name: Gannon, William J. last_name: Gannon - first_name: Sayed Ali Akbar full_name: Ghorashi, Sayed Ali Akbar last_name: Ghorashi - first_name: Berit H. full_name: Goodge, Berit H. last_name: Goodge - first_name: Olga full_name: Goulko, Olga last_name: Goulko - first_name: G. full_name: Grissonnache, G. last_name: Grissonnache - first_name: Alannah full_name: Hallas, Alannah last_name: Hallas - first_name: Ian M. full_name: Hayes, Ian M. last_name: Hayes - first_name: Yu full_name: He, Yu last_name: He - first_name: Edwin W. full_name: Huang, Edwin W. last_name: Huang - first_name: Anshu full_name: Kogar, Anshu last_name: Kogar - first_name: Divine full_name: Kumah, Divine last_name: Kumah - first_name: Jong Yeon full_name: Lee, Jong Yeon last_name: Lee - first_name: A. full_name: Legros, A. last_name: Legros - first_name: Fahad full_name: Mahmood, Fahad last_name: Mahmood - first_name: Yulia full_name: Maximenko, Yulia last_name: Maximenko - first_name: Nick full_name: Pellatz, Nick last_name: Pellatz - first_name: Hryhoriy full_name: Polshyn, Hryhoriy id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48 last_name: Polshyn orcid: 0000-0001-8223-8896 - first_name: Tarapada full_name: Sarkar, Tarapada last_name: Sarkar - first_name: Allen full_name: Scheie, Allen last_name: Scheie - first_name: Kyle L. full_name: Seyler, Kyle L. last_name: Seyler - first_name: Zhenzhong full_name: Shi, Zhenzhong last_name: Shi - first_name: Brian full_name: Skinner, Brian last_name: Skinner - first_name: Lucia full_name: Steinke, Lucia last_name: Steinke - first_name: K. full_name: Thirunavukkuarasu, K. last_name: Thirunavukkuarasu - first_name: Thaís Victa full_name: Trevisan, Thaís Victa last_name: Trevisan - first_name: Michael full_name: Vogl, Michael last_name: Vogl - first_name: Pavel A. full_name: Volkov, Pavel A. last_name: Volkov - first_name: Yao full_name: Wang, Yao last_name: Wang - first_name: Yishu full_name: Wang, Yishu last_name: Wang - first_name: Di full_name: Wei, Di last_name: Wei - first_name: Kaya full_name: Wei, Kaya last_name: Wei - first_name: Shuolong full_name: Yang, Shuolong last_name: Yang - first_name: Xian full_name: Zhang, Xian last_name: Zhang - first_name: Ya-Hui full_name: Zhang, Ya-Hui last_name: Zhang - first_name: Liuyan full_name: Zhao, Liuyan last_name: Zhao - first_name: Alfred full_name: Zong, Alfred last_name: Zong citation: ama: Alexandradinata A, Armitage NP, Baydin A, et al. The future of the correlated electron problem. arXiv. apa: Alexandradinata, A., Armitage, N. P., Baydin, A., Bi, W., Cao, Y., Changlani, H. J., … Zong, A. (n.d.). The future of the correlated electron problem. arXiv. chicago: Alexandradinata, A, N.P. Armitage, Andrey Baydin, Wenli Bi, Yue Cao, Hitesh J. Changlani, Eli Chertkov, et al. “The Future of the Correlated Electron Problem.” ArXiv, n.d. ieee: A. Alexandradinata et al., “The future of the correlated electron problem,” arXiv. . ista: Alexandradinata A, Armitage NP, Baydin A, Bi W, Cao Y, Changlani HJ, Chertkov E, da Silva Neto EH, Delacretaz L, El Baggari I, Ferguson GM, Gannon WJ, Ghorashi SAA, Goodge BH, Goulko O, Grissonnache G, Hallas A, Hayes IM, He Y, Huang EW, Kogar A, Kumah D, Lee JY, Legros A, Mahmood F, Maximenko Y, Pellatz N, Polshyn H, Sarkar T, Scheie A, Seyler KL, Shi Z, Skinner B, Steinke L, Thirunavukkuarasu K, Trevisan TV, Vogl M, Volkov PA, Wang Y, Wang Y, Wei D, Wei K, Yang S, Zhang X, Zhang Y-H, Zhao L, Zong A. The future of the correlated electron problem. arXiv, . mla: Alexandradinata, A., et al. “The Future of the Correlated Electron Problem.” ArXiv. short: A. Alexandradinata, N.P. Armitage, A. Baydin, W. Bi, Y. Cao, H.J. Changlani, E. Chertkov, E.H. da Silva Neto, L. Delacretaz, I. El Baggari, G.M. Ferguson, W.J. Gannon, S.A.A. Ghorashi, B.H. Goodge, O. Goulko, G. Grissonnache, A. Hallas, I.M. Hayes, Y. He, E.W. Huang, A. Kogar, D. Kumah, J.Y. Lee, A. Legros, F. Mahmood, Y. Maximenko, N. Pellatz, H. Polshyn, T. Sarkar, A. Scheie, K.L. Seyler, Z. Shi, B. Skinner, L. Steinke, K. Thirunavukkuarasu, T.V. Trevisan, M. Vogl, P.A. Volkov, Y. Wang, Y. Wang, D. Wei, K. Wei, S. Yang, X. Zhang, Y.-H. Zhang, L. Zhao, A. Zong, ArXiv (n.d.). date_created: 2022-01-20T10:55:36Z date_published: 2020-10-01T00:00:00Z date_updated: 2022-01-24T08:05:51Z day: '01' extern: '1' external_id: arxiv: - '2010.00584' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2010.00584 month: '10' oa: 1 oa_version: Preprint page: '55' publication: arXiv publication_status: submitted status: public title: The future of the correlated electron problem type: preprint user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 year: '2020' ... --- _id: '10672' abstract: - lang: eng text: The family of feedback alignment (FA) algorithms aims to provide a more biologically motivated alternative to backpropagation (BP), by substituting the computations that are unrealistic to be implemented in physical brains. While FA algorithms have been shown to work well in practice, there is a lack of rigorous theory proofing their learning capabilities. Here we introduce the first feedback alignment algorithm with provable learning guarantees. In contrast to existing work, we do not require any assumption about the size or depth of the network except that it has a single output neuron, i.e., such as for binary classification tasks. We show that our FA algorithm can deliver its theoretical promises in practice, surpassing the learning performance of existing FA methods and matching backpropagation in binary classification tasks. Finally, we demonstrate the limits of our FA variant when the number of output neurons grows beyond a certain quantity. acknowledgement: "This research was supported in part by the Austrian Science Fund (FWF) under grant Z211-N23\r\n(Wittgenstein Award).\r\n" article_processing_charge: No author: - first_name: Mathias full_name: Lechner, Mathias id: 3DC22916-F248-11E8-B48F-1D18A9856A87 last_name: Lechner citation: ama: 'Lechner M. Learning representations for binary-classification without backpropagation. In: 8th International Conference on Learning Representations. ICLR; 2020.' apa: 'Lechner, M. (2020). Learning representations for binary-classification without backpropagation. In 8th International Conference on Learning Representations. Virtual ; Addis Ababa, Ethiopia: ICLR.' chicago: Lechner, Mathias. “Learning Representations for Binary-Classification without Backpropagation.” In 8th International Conference on Learning Representations. ICLR, 2020. ieee: M. Lechner, “Learning representations for binary-classification without backpropagation,” in 8th International Conference on Learning Representations, Virtual ; Addis Ababa, Ethiopia, 2020. ista: 'Lechner M. 2020. Learning representations for binary-classification without backpropagation. 8th International Conference on Learning Representations. ICLR: International Conference on Learning Representations.' mla: Lechner, Mathias. “Learning Representations for Binary-Classification without Backpropagation.” 8th International Conference on Learning Representations, ICLR, 2020. short: M. Lechner, in:, 8th International Conference on Learning Representations, ICLR, 2020. conference: end_date: 2020-05-01 location: Virtual ; Addis Ababa, Ethiopia name: 'ICLR: International Conference on Learning Representations' start_date: 2020-04-26 corr_author: '1' date_created: 2022-01-25T15:50:00Z date_published: 2020-03-11T00:00:00Z date_updated: 2025-04-15T06:25:56Z day: '11' ddc: - '000' department: - _id: GradSch - _id: ToHe file: - access_level: open_access checksum: ea13d42dd4541ddb239b6a75821fd6c9 content_type: application/pdf creator: mlechner date_created: 2022-01-26T07:35:17Z date_updated: 2022-01-26T07:35:17Z file_id: '10677' file_name: iclr_2020.pdf file_size: 249431 relation: main_file success: 1 file_date_updated: 2022-01-26T07:35:17Z has_accepted_license: '1' language: - iso: eng license: https://creativecommons.org/licenses/by-nc-nd/3.0/ main_file_link: - open_access: '1' url: https://openreview.net/forum?id=Bke61krFvS month: '03' oa: 1 oa_version: Published Version project: - _id: 25F42A32-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: Z211 name: Formal methods for the design and analysis of complex systems publication: 8th International Conference on Learning Representations publication_status: published publisher: ICLR quality_controlled: '1' scopus_import: '1' status: public title: Learning representations for binary-classification without backpropagation tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/3.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND 3.0) short: CC BY-NC-ND (3.0) type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2020' ... --- _id: '10673' abstract: - lang: eng text: We propose a neural information processing system obtained by re-purposing the function of a biological neural circuit model to govern simulated and real-world control tasks. Inspired by the structure of the nervous system of the soil-worm, C. elegans, we introduce ordinary neural circuits (ONCs), defined as the model of biological neural circuits reparameterized for the control of alternative tasks. We first demonstrate that ONCs realize networks with higher maximum flow compared to arbitrary wired networks. We then learn instances of ONCs to control a series of robotic tasks, including the autonomous parking of a real-world rover robot. For reconfiguration of the purpose of the neural circuit, we adopt a search-based optimization algorithm. Ordinary neural circuits perform on par and, in some cases, significantly surpass the performance of contemporary deep learning models. ONC networks are compact, 77% sparser than their counterpart neural controllers, and their neural dynamics are fully interpretable at the cell-level. acknowledgement: "RH and RG are partially supported by Horizon-2020 ECSEL Project grant No. 783163 (iDev40), Productive 4.0, and ATBMBFW CPS-IoT Ecosystem. ML was supported in part by the Austrian Science Fund (FWF) under grant Z211-N23\r\n(Wittgenstein Award). AA is supported by the National Science Foundation (NSF) Graduate Research Fellowship\r\nProgram. RH and DR are partially supported by The Boeing Company and JP Morgan Chase. This research work is\r\npartially drawn from the PhD dissertation of RH.\r\n" alternative_title: - PMLR article_processing_charge: No author: - first_name: Ramin full_name: Hasani, Ramin last_name: Hasani - first_name: Mathias full_name: Lechner, Mathias id: 3DC22916-F248-11E8-B48F-1D18A9856A87 last_name: Lechner - first_name: Alexander full_name: Amini, Alexander last_name: Amini - first_name: Daniela full_name: Rus, Daniela last_name: Rus - first_name: Radu full_name: Grosu, Radu last_name: Grosu citation: ama: 'Hasani R, Lechner M, Amini A, Rus D, Grosu R. A natural lottery ticket winner: Reinforcement learning with ordinary neural circuits. In: Proceedings of the 37th International Conference on Machine Learning. PMLR. ; 2020:4082-4093.' apa: 'Hasani, R., Lechner, M., Amini, A., Rus, D., & Grosu, R. (2020). A natural lottery ticket winner: Reinforcement learning with ordinary neural circuits. In Proceedings of the 37th International Conference on Machine Learning (pp. 4082–4093). Virtual.' chicago: 'Hasani, Ramin, Mathias Lechner, Alexander Amini, Daniela Rus, and Radu Grosu. “A Natural Lottery Ticket Winner: Reinforcement Learning with Ordinary Neural Circuits.” In Proceedings of the 37th International Conference on Machine Learning, 4082–93. PMLR, 2020.' ieee: 'R. Hasani, M. Lechner, A. Amini, D. Rus, and R. Grosu, “A natural lottery ticket winner: Reinforcement learning with ordinary neural circuits,” in Proceedings of the 37th International Conference on Machine Learning, Virtual, 2020, pp. 4082–4093.' ista: 'Hasani R, Lechner M, Amini A, Rus D, Grosu R. 2020. A natural lottery ticket winner: Reinforcement learning with ordinary neural circuits. Proceedings of the 37th International Conference on Machine Learning. ML: Machine LearningPMLR, PMLR, , 4082–4093.' mla: 'Hasani, Ramin, et al. “A Natural Lottery Ticket Winner: Reinforcement Learning with Ordinary Neural Circuits.” Proceedings of the 37th International Conference on Machine Learning, 2020, pp. 4082–93.' short: R. Hasani, M. Lechner, A. Amini, D. Rus, R. Grosu, in:, Proceedings of the 37th International Conference on Machine Learning, 2020, pp. 4082–4093. conference: end_date: 2020-07-18 location: Virtual name: 'ML: Machine Learning' start_date: 2020-07-12 date_created: 2022-01-25T15:50:34Z date_published: 2020-01-01T00:00:00Z date_updated: 2025-04-15T06:25:56Z ddc: - '000' department: - _id: GradSch - _id: ToHe file: - access_level: open_access checksum: c9a4a29161777fc1a89ef451c040e3b1 content_type: application/pdf creator: cchlebak date_created: 2022-01-26T11:08:51Z date_updated: 2022-01-26T11:08:51Z file_id: '10691' file_name: 2020_PMLR_Hasani.pdf file_size: 2329798 relation: main_file success: 1 file_date_updated: 2022-01-26T11:08:51Z has_accepted_license: '1' language: - iso: eng main_file_link: - open_access: '1' url: http://proceedings.mlr.press/v119/hasani20a.html oa: 1 oa_version: Published Version page: 4082-4093 project: - _id: 25F42A32-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: Z211 name: Formal methods for the design and analysis of complex systems publication: Proceedings of the 37th International Conference on Machine Learning publication_identifier: issn: - 2640-3498 publication_status: published quality_controlled: '1' scopus_import: '1' series_title: PMLR status: public title: 'A natural lottery ticket winner: Reinforcement learning with ordinary neural circuits' tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/3.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND 3.0) short: CC BY-NC-ND (3.0) type: conference user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 year: '2020' ... --- _id: '10693' abstract: - lang: eng text: High quality graphene heterostructures host an array of fractional quantum Hall isospin ferromagnets with diverse spin and valley orders. While a variety of phase transitions have been observed, disentangling the isospin phase diagram of these states is hampered by the absence of direct probes of spin and valley order. I will describe nonlocal transport measurements based on launching spin waves from a gate defined lateral heterojunction, performed in ultra-clean Corbino geometry graphene devices. At high magnetic fields, we find that the spin-wave transport signal is detected in all FQH states between ν = 0 and 1; however, between ν = 1 and 2 only odd numerator FQH states show finite nonlocal transport, despite the identical ground state spin polarizations in odd- and even numerator states. The results reveal that the neutral spin-waves are both spin and sublattice polarized making them a sensitive probe of ground state sublattice structure. Armed with this understanding, we use nonlocal transport signal to a magnetic field tuned isospin phase transition, showing that the emergent even denominator state at ν = 1/2 in monolayer graphene is indeed a multicomponent state featuring equal populations on each sublattice. alternative_title: - Bulletin of the American Physical Society article_number: B54. 00007 article_processing_charge: No author: - first_name: Haoxin full_name: Zhou, Haoxin last_name: Zhou - first_name: Hryhoriy full_name: Polshyn, Hryhoriy id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48 last_name: Polshyn orcid: 0000-0001-8223-8896 - first_name: Takashi full_name: Tanaguchi, Takashi last_name: Tanaguchi - first_name: Kenji full_name: Watanabe, Kenji last_name: Watanabe - first_name: Andrea full_name: Young, Andrea last_name: Young citation: ama: 'Zhou H, Polshyn H, Tanaguchi T, Watanabe K, Young A. Sublattice resolved spin wave transport through graphene fractional quantum Hall states as a probe of isospin order. In: APS March Meeting 2020. Vol 65. American Physical Society; 2020.' apa: 'Zhou, H., Polshyn, H., Tanaguchi, T., Watanabe, K., & Young, A. (2020). Sublattice resolved spin wave transport through graphene fractional quantum Hall states as a probe of isospin order. In APS March Meeting 2020 (Vol. 65). Denver, CO, United States: American Physical Society.' chicago: Zhou, Haoxin, Hryhoriy Polshyn, Takashi Tanaguchi, Kenji Watanabe, and Andrea Young. “Sublattice Resolved Spin Wave Transport through Graphene Fractional Quantum Hall States as a Probe of Isospin Order.” In APS March Meeting 2020, Vol. 65. American Physical Society, 2020. ieee: H. Zhou, H. Polshyn, T. Tanaguchi, K. Watanabe, and A. Young, “Sublattice resolved spin wave transport through graphene fractional quantum Hall states as a probe of isospin order,” in APS March Meeting 2020, Denver, CO, United States, 2020, vol. 65, no. 1. ista: 'Zhou H, Polshyn H, Tanaguchi T, Watanabe K, Young A. 2020. Sublattice resolved spin wave transport through graphene fractional quantum Hall states as a probe of isospin order. APS March Meeting 2020. APS: American Physical Society, Bulletin of the American Physical Society, vol. 65, B54. 00007.' mla: Zhou, Haoxin, et al. “Sublattice Resolved Spin Wave Transport through Graphene Fractional Quantum Hall States as a Probe of Isospin Order.” APS March Meeting 2020, vol. 65, no. 1, B54. 00007, American Physical Society, 2020. short: H. Zhou, H. Polshyn, T. Tanaguchi, K. Watanabe, A. Young, in:, APS March Meeting 2020, American Physical Society, 2020. conference: end_date: 2020-03-06 location: Denver, CO, United States name: 'APS: American Physical Society' start_date: 2020-03-02 date_created: 2022-01-27T10:50:10Z date_published: 2020-03-01T00:00:00Z date_updated: 2022-01-27T10:58:38Z day: '01' extern: '1' intvolume: ' 65' issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://meetings.aps.org/Meeting/MAR20/Session/B54.7 month: '03' oa: 1 oa_version: Published Version publication: APS March Meeting 2020 publication_identifier: issn: - 0003-0503 publication_status: published publisher: American Physical Society quality_controlled: '1' status: public title: Sublattice resolved spin wave transport through graphene fractional quantum Hall states as a probe of isospin order type: conference user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 65 year: '2020' ... --- _id: '10696' abstract: - lang: eng text: We experimentally investigate twisted van der Waals heterostructures of monolayer graphene rotated with respect to a bernal stacked graphene bilayer. We report transport measurements for devices with twist angles between 0.9 and 1.4°. The electric field allows efficient tuning of the width, isolation and the topology of the moiré bands in this system. By comparing magnetoresistance measurements to numerical simulations, we develop an understanding of the band structure. Finally, we observe correlated states at half- and quarter-fillings, which arise when narrow moire sublattice band is isolated by energy gaps from dispersive bands. We investigate the effects of in-plane and out-of-plane magnetic field on these states and discuss the implication for their spin- and valley- polarization. alternative_title: - Bulletin of the American Physical Society article_number: B51.00005 article_processing_charge: No author: - first_name: Hryhoriy full_name: Polshyn, Hryhoriy id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48 last_name: Polshyn orcid: 0000-0001-8223-8896 - first_name: Jihang full_name: Zhu, Jihang last_name: Zhu - first_name: Manish full_name: Kumar, Manish last_name: Kumar - first_name: Takashi full_name: Taniguchi, Takashi last_name: Taniguchi - first_name: Kenji full_name: Watanabe, Kenji last_name: Watanabe - first_name: Allan full_name: MacDonald, Allan last_name: MacDonald - first_name: Andrea full_name: Young, Andrea last_name: Young citation: ama: 'Polshyn H, Zhu J, Kumar M, et al. Correlated states and tunable topological bands in twisted monolayer-bilayer graphene heterostructures. In: APS March Meeting 2020. Vol 65. American Physical Society; 2020.' apa: 'Polshyn, H., Zhu, J., Kumar, M., Taniguchi, T., Watanabe, K., MacDonald, A., & Young, A. (2020). Correlated states and tunable topological bands in twisted monolayer-bilayer graphene heterostructures. In APS March Meeting 2020 (Vol. 65). Denver, CO, United States: American Physical Society.' chicago: Polshyn, Hryhoriy, Jihang Zhu, Manish Kumar, Takashi Taniguchi, Kenji Watanabe, Allan MacDonald, and Andrea Young. “Correlated States and Tunable Topological Bands in Twisted Monolayer-Bilayer Graphene Heterostructures.” In APS March Meeting 2020, Vol. 65. American Physical Society, 2020. ieee: H. Polshyn et al., “Correlated states and tunable topological bands in twisted monolayer-bilayer graphene heterostructures,” in APS March Meeting 2020, Denver, CO, United States, 2020, vol. 65, no. 1. ista: 'Polshyn H, Zhu J, Kumar M, Taniguchi T, Watanabe K, MacDonald A, Young A. 2020. Correlated states and tunable topological bands in twisted monolayer-bilayer graphene heterostructures. APS March Meeting 2020. APS: American Physical Society, Bulletin of the American Physical Society, vol. 65, B51.00005.' mla: Polshyn, Hryhoriy, et al. “Correlated States and Tunable Topological Bands in Twisted Monolayer-Bilayer Graphene Heterostructures.” APS March Meeting 2020, vol. 65, no. 1, B51.00005, American Physical Society, 2020. short: H. Polshyn, J. Zhu, M. Kumar, T. Taniguchi, K. Watanabe, A. MacDonald, A. Young, in:, APS March Meeting 2020, American Physical Society, 2020. conference: end_date: 2020-03-06 location: Denver, CO, United States name: 'APS: American Physical Society' start_date: 2020-03-02 date_created: 2022-01-28T10:09:19Z date_published: 2020-03-01T00:00:00Z date_updated: 2022-02-08T10:22:08Z day: '01' extern: '1' intvolume: ' 65' issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://meetings.aps.org/Meeting/MAR20/Session/B51.5 month: '03' oa: 1 oa_version: Published Version publication: APS March Meeting 2020 publication_identifier: issn: - 0003-0503 publication_status: published publisher: American Physical Society quality_controlled: '1' status: public title: Correlated states and tunable topological bands in twisted monolayer-bilayer graphene heterostructures type: conference user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 65 year: '2020' ... --- _id: '10697' abstract: - lang: eng text: We report the observation of a quantized anomalous Hall effect in a moiré heterostructure consisting of twisted bilayer graphene aligned to an encapsulating hBN substrate. The effect occurs at a density of 3 electrons per superlattice unit cell, where we observe magnetic hysteresis and a Hall resistance quantized to within 0.1% of the resistance quantum at temperatures as high as 3K. In this first of 3 talks, I will describe the fabrication procedure for our device as well as basic transport characterization measurements. I will introduce the phenomenology of twisted bilayer graphene and present evidence for hBN alignment as manifested in the hierarchy of symmetry-breaking gaps and anomalous magnetoresistance. acknowledgement: I would like to thank the MURI program, Sloan foundation, AFOSR, and ARO for their generous support of this work. alternative_title: - Bulletin of the American Physical Society article_number: B59.00012 article_processing_charge: No arxiv: 1 author: - first_name: Yuxuan full_name: Zhang, Yuxuan last_name: Zhang - first_name: Marec full_name: Serlin, Marec last_name: Serlin - first_name: Charles full_name: Tschirhart, Charles last_name: Tschirhart - first_name: Hryhoriy full_name: Polshyn, Hryhoriy id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48 last_name: Polshyn orcid: 0000-0001-8223-8896 - first_name: Jiacheng full_name: Zhu, Jiacheng last_name: Zhu - first_name: Leon full_name: Balents, Leon last_name: Balents - first_name: Martin E. full_name: Huber, Martin E. last_name: Huber - first_name: Takashi full_name: Taniguchi, Takashi last_name: Taniguchi - first_name: Kenji full_name: Watanabe, Kenji last_name: Watanabe - first_name: Andrea full_name: Young, Andrea last_name: Young citation: ama: 'Zhang Y, Serlin M, Tschirhart C, et al. Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part I: Device fabrication and transport. In: APS March Meeting 2020. Vol 65. American Physical Society; 2020.' apa: 'Zhang, Y., Serlin, M., Tschirhart, C., Polshyn, H., Zhu, J., Balents, L., … Young, A. (2020). Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part I: Device fabrication and transport. In APS March Meeting 2020 (Vol. 65). Denver, CO, United States: American Physical Society.' chicago: 'Zhang, Yuxuan, Marec Serlin, Charles Tschirhart, Hryhoriy Polshyn, Jiacheng Zhu, Leon Balents, Martin E. Huber, Takashi Taniguchi, Kenji Watanabe, and Andrea Young. “Intrinsic Quantized Anomalous Hall Effect in a Moiré Heterostructure, Part I: Device Fabrication and Transport.” In APS March Meeting 2020, Vol. 65. American Physical Society, 2020.' ieee: 'Y. Zhang et al., “Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part I: Device fabrication and transport,” in APS March Meeting 2020, Denver, CO, United States, 2020, vol. 65, no. 1.' ista: 'Zhang Y, Serlin M, Tschirhart C, Polshyn H, Zhu J, Balents L, Huber ME, Taniguchi T, Watanabe K, Young A. 2020. Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part I: Device fabrication and transport. APS March Meeting 2020. APS: American Physical Society, Bulletin of the American Physical Society, vol. 65, B59.00012.' mla: 'Zhang, Yuxuan, et al. “Intrinsic Quantized Anomalous Hall Effect in a Moiré Heterostructure, Part I: Device Fabrication and Transport.” APS March Meeting 2020, vol. 65, no. 1, B59.00012, American Physical Society, 2020.' short: Y. Zhang, M. Serlin, C. Tschirhart, H. Polshyn, J. Zhu, L. Balents, M.E. Huber, T. Taniguchi, K. Watanabe, A. Young, in:, APS March Meeting 2020, American Physical Society, 2020. conference: end_date: 2020-03-06 location: Denver, CO, United States name: 'APS: American Physical Society' start_date: 2020-03-02 date_created: 2022-01-28T10:28:35Z date_published: 2020-03-01T00:00:00Z date_updated: 2023-02-21T15:57:52Z day: '01' extern: '1' external_id: arxiv: - '1907.00261' intvolume: ' 65' issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://meetings.aps.org/Meeting/MAR20/Session/B59.12 month: '03' oa: 1 oa_version: Published Version publication: APS March Meeting 2020 publication_status: published publisher: American Physical Society quality_controlled: '1' related_material: record: - id: '10619' relation: other status: public status: public title: 'Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part I: Device fabrication and transport' type: conference user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 65 year: '2020' ... --- _id: '10698' abstract: - lang: eng text: This is the second of three talks describing the observation and characterization of a ferromagnetic moiré heterostructure based on twisted bilayer graphene aligned to hexagonal boron nitride. I will compare the qualitative and quantitative features of this observed quantum anomalous Hall state to traditional systems engineered from thin film (Bi,Sb)2Te3 topological insulators. In particular, we find that the measured electronic energy gap of ~30K is several times higher than the Curie temperature, consistent with a lack of disorder associated with magnetic dopants. In this system, the quantization arises from spontaneous ferromagnetic polarization into a single spin and valley moiré subband, which is topological despite the lack of spin orbit coupling. I will also discuss the observation of current induced switching, which allows the magnetic state of the heterostructure to be controllably reversed with currents as small as a few nanoamperes. acknowledgement: I would like to thank the MURI Program, AFOSR, Sloan Foundation, and the ARO for their generous support of this work. alternative_title: - Bulletin of the American Physical Society article_number: B59.00011 article_processing_charge: No arxiv: 1 author: - first_name: Marec full_name: Serlin, Marec last_name: Serlin - first_name: Charles full_name: Tschirhart, Charles last_name: Tschirhart - first_name: Hryhoriy full_name: Polshyn, Hryhoriy id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48 last_name: Polshyn orcid: 0000-0001-8223-8896 - first_name: Yuxuan full_name: Zhang, Yuxuan last_name: Zhang - first_name: Jiacheng full_name: Zhu, Jiacheng last_name: Zhu - first_name: Martin E. full_name: Huber, Martin E. last_name: Huber - first_name: Leon full_name: Balents, Leon last_name: Balents - first_name: Kenji full_name: Watanabe, Kenji last_name: Watanabe - first_name: Takashi full_name: Tanaguchi, Takashi last_name: Tanaguchi - first_name: Andrea full_name: Young, Andrea last_name: Young citation: ama: 'Serlin M, Tschirhart C, Polshyn H, et al. Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part II: Temperature dependence and current switching. In: APS March Meeting 2020. Vol 65. American Physical Society; 2020.' apa: 'Serlin, M., Tschirhart, C., Polshyn, H., Zhang, Y., Zhu, J., Huber, M. E., … Young, A. (2020). Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part II: Temperature dependence and current switching. In APS March Meeting 2020 (Vol. 65). Denver, CO, United States: American Physical Society.' chicago: 'Serlin, Marec, Charles Tschirhart, Hryhoriy Polshyn, Yuxuan Zhang, Jiacheng Zhu, Martin E. Huber, Leon Balents, Kenji Watanabe, Takashi Tanaguchi, and Andrea Young. “Intrinsic Quantized Anomalous Hall Effect in a Moiré Heterostructure, Part II: Temperature Dependence and Current Switching.” In APS March Meeting 2020, Vol. 65. American Physical Society, 2020.' ieee: 'M. Serlin et al., “Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part II: Temperature dependence and current switching,” in APS March Meeting 2020, Denver, CO, United States, 2020, vol. 65, no. 1.' ista: 'Serlin M, Tschirhart C, Polshyn H, Zhang Y, Zhu J, Huber ME, Balents L, Watanabe K, Tanaguchi T, Young A. 2020. Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part II: Temperature dependence and current switching. APS March Meeting 2020. APS: American Physical Society, Bulletin of the American Physical Society, vol. 65, B59.00011.' mla: 'Serlin, Marec, et al. “Intrinsic Quantized Anomalous Hall Effect in a Moiré Heterostructure, Part II: Temperature Dependence and Current Switching.” APS March Meeting 2020, vol. 65, no. 1, B59.00011, American Physical Society, 2020.' short: M. Serlin, C. Tschirhart, H. Polshyn, Y. Zhang, J. Zhu, M.E. Huber, L. Balents, K. Watanabe, T. Tanaguchi, A. Young, in:, APS March Meeting 2020, American Physical Society, 2020. conference: end_date: 2020-03-06 location: Denver, CO, United States name: 'APS: American Physical Society' start_date: 2020-03-02 date_created: 2022-01-28T10:46:57Z date_published: 2020-03-01T00:00:00Z date_updated: 2023-02-21T15:57:52Z day: '01' extern: '1' external_id: arxiv: - '1907.00261' intvolume: ' 65' issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://meetings.aps.org/Meeting/MAR20/Session/B59.11 month: '03' oa: 1 oa_version: Published Version publication: APS March Meeting 2020 publication_status: published publisher: American Physical Society quality_controlled: '1' related_material: record: - id: '10619' relation: other status: public status: public title: 'Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part II: Temperature dependence and current switching' type: conference user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 65 year: '2020' ... --- _id: '10699' abstract: - lang: eng text: This is the third of three talks describing the observation and characterization of a ferromagnetic moiré heterostructure based on twisted bilayer graphene aligned to hexagonal boron nitride. In this segment I will present scanning probe magnetometry data acquired using a nanoSQUID-on-tip microscope, which provides ~150 nm spatial resolution and a field sensitivity of ~10 nT/rtHz. We study the distribution of magnetic domains within the device as a function of density, magnetic field training, and DC current. Our data allow us to constrain the magnitude of the orbital magnetic moment of the electrons in the QAH state. Comparison with simultaneously acquired transport data allows us to precisely correlate single domain dynamics with discrete jumps in the observed anomalous Hall signal. acknowledgement: I would like to thank the MURI program, Sloan foundation, AFOSR, and ARO for their generous support of this work. I would also like to thank the NSF GRFP and the Hertz foundation for their generous support of my graduate studies. alternative_title: - Bulletin of the American Physical Society article_number: B59.00013 article_processing_charge: No arxiv: 1 author: - first_name: Charles full_name: Tschirhart, Charles last_name: Tschirhart - first_name: Marec full_name: Serlin, Marec last_name: Serlin - first_name: Hryhoriy full_name: Polshyn, Hryhoriy id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48 last_name: Polshyn orcid: 0000-0001-8223-8896 - first_name: Yuxuan full_name: Zhang, Yuxuan last_name: Zhang - first_name: Jiacheng full_name: Zhu, Jiacheng last_name: Zhu - first_name: Leon full_name: Balents, Leon last_name: Balents - first_name: Martin E. full_name: Huber, Martin E. last_name: Huber - first_name: Kenji full_name: Watanabe, Kenji last_name: Watanabe - first_name: Takashi full_name: Tanaguchi, Takashi last_name: Tanaguchi - first_name: Andrea full_name: Young, Andrea last_name: Young citation: ama: 'Tschirhart C, Serlin M, Polshyn H, et al. Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part III: Scanning probe magnetometry. In: APS March Meeting 2020. Vol 65. American Physical Society; 2020.' apa: 'Tschirhart, C., Serlin, M., Polshyn, H., Zhang, Y., Zhu, J., Balents, L., … Young, A. (2020). Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part III: Scanning probe magnetometry. In APS March Meeting 2020 (Vol. 65). Denver, CO, United States: American Physical Society.' chicago: 'Tschirhart, Charles, Marec Serlin, Hryhoriy Polshyn, Yuxuan Zhang, Jiacheng Zhu, Leon Balents, Martin E. Huber, Kenji Watanabe, Takashi Tanaguchi, and Andrea Young. “Intrinsic Quantized Anomalous Hall Effect in a Moiré Heterostructure, Part III: Scanning Probe Magnetometry.” In APS March Meeting 2020, Vol. 65. American Physical Society, 2020.' ieee: 'C. Tschirhart et al., “Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part III: Scanning probe magnetometry,” in APS March Meeting 2020, Denver, CO, United States, 2020, vol. 65, no. 1.' ista: 'Tschirhart C, Serlin M, Polshyn H, Zhang Y, Zhu J, Balents L, Huber ME, Watanabe K, Tanaguchi T, Young A. 2020. Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part III: Scanning probe magnetometry. APS March Meeting 2020. APS: American Physical Society, Bulletin of the American Physical Society, vol. 65, B59.00013.' mla: 'Tschirhart, Charles, et al. “Intrinsic Quantized Anomalous Hall Effect in a Moiré Heterostructure, Part III: Scanning Probe Magnetometry.” APS March Meeting 2020, vol. 65, no. 1, B59.00013, American Physical Society, 2020.' short: C. Tschirhart, M. Serlin, H. Polshyn, Y. Zhang, J. Zhu, L. Balents, M.E. Huber, K. Watanabe, T. Tanaguchi, A. Young, in:, APS March Meeting 2020, American Physical Society, 2020. conference: end_date: 2020-03-06 location: Denver, CO, United States name: 'APS: American Physical Society' start_date: 2020-03-02 date_created: 2022-01-28T10:57:49Z date_published: 2020-03-01T00:00:00Z date_updated: 2023-02-21T15:57:52Z day: '01' extern: '1' external_id: arxiv: - '1907.00261' intvolume: ' 65' issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://meetings.aps.org/Meeting/MAR20/Session/B59.13 month: '03' oa: 1 oa_version: Published Version publication: APS March Meeting 2020 publication_identifier: issn: - 0003-0503 publication_status: published publisher: American Physical Society quality_controlled: '1' related_material: record: - id: '10619' relation: other status: public status: public title: 'Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part III: Scanning probe magnetometry' type: conference user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 65 year: '2020' ... --- _id: '10701' abstract: - lang: eng text: Partially filled Landau levels host competing electronic orders. For example, electron solids may prevail close to integer filling of the Landau levels before giving way to fractional quantum Hall liquids at higher carrier density1,2. Here, we report the observation of an electron solid with non-collinear spin texture in monolayer graphene, consistent with solidification of skyrmions3—topological spin textures characterized by quantized electrical charge4,5. We probe the spin texture of the solids using a modified Corbino geometry that allows ferromagnetic magnons to be launched and detected6,7. We find that magnon transport is highly efficient when one Landau level is filled (ν=1), consistent with quantum Hall ferromagnetic spin polarization. However, even minimal doping immediately quenches the magnon signal while leaving the vanishing low-temperature charge conductivity unchanged. Our results can be understood by the formation of a solid of charged skyrmions near ν=1, whose non-collinear spin texture leads to rapid magnon decay. Data near fractional fillings show evidence of several fractional skyrmion solids, suggesting that graphene hosts a highly tunable landscape of coupled spin and charge orders. acknowledgement: We acknowledge discussions with B. Halperin, C. Huang, A. Macdonald and M. Zalatel. Experimental work at UCSB was supported by the Army Research Office under awards nos. MURI W911NF-16-1-0361 and W911NF-16-1-0482. K.W. and T.T. acknowledge support from the Elemental Strategy Initiative conducted by MEXT (Japan) and CREST (JPMJCR15F3), JST. A.F.Y. acknowledges the support of the David and Lucile Packard Foundation and and Alfred. P. Sloan Foundation. article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Haoxin full_name: Zhou, Haoxin last_name: Zhou - first_name: Hryhoriy full_name: Polshyn, Hryhoriy id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48 last_name: Polshyn orcid: 0000-0001-8223-8896 - first_name: Takashi full_name: Taniguchi, Takashi last_name: Taniguchi - first_name: Kenji full_name: Watanabe, Kenji last_name: Watanabe - first_name: Andrea F. full_name: Young, Andrea F. last_name: Young citation: ama: Zhou H, Polshyn H, Taniguchi T, Watanabe K, Young AF. Skyrmion solids in monolayer graphene. Nature Physics. 2020;16(2):154-158. doi:10.1038/s41567-019-0729-8 apa: Zhou, H., Polshyn, H., Taniguchi, T., Watanabe, K., & Young, A. F. (2020). Skyrmion solids in monolayer graphene. Nature Physics. Springer Nature. https://doi.org/10.1038/s41567-019-0729-8 chicago: Zhou, Haoxin, Hryhoriy Polshyn, Takashi Taniguchi, Kenji Watanabe, and Andrea F. Young. “Skyrmion Solids in Monolayer Graphene.” Nature Physics. Springer Nature, 2020. https://doi.org/10.1038/s41567-019-0729-8. ieee: H. Zhou, H. Polshyn, T. Taniguchi, K. Watanabe, and A. F. Young, “Skyrmion solids in monolayer graphene,” Nature Physics, vol. 16, no. 2. Springer Nature, pp. 154–158, 2020. ista: Zhou H, Polshyn H, Taniguchi T, Watanabe K, Young AF. 2020. Skyrmion solids in monolayer graphene. Nature Physics. 16(2), 154–158. mla: Zhou, Haoxin, et al. “Skyrmion Solids in Monolayer Graphene.” Nature Physics, vol. 16, no. 2, Springer Nature, 2020, pp. 154–58, doi:10.1038/s41567-019-0729-8. short: H. Zhou, H. Polshyn, T. Taniguchi, K. Watanabe, A.F. Young, Nature Physics 16 (2020) 154–158. date_created: 2022-01-28T12:04:09Z date_published: 2020-02-01T00:00:00Z date_updated: 2022-01-31T07:10:07Z day: '01' doi: 10.1038/s41567-019-0729-8 extern: '1' external_id: arxiv: - '1904.11485' intvolume: ' 16' issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1904.11485 month: '02' oa: 1 oa_version: Preprint page: 154-158 publication: Nature Physics publication_identifier: eissn: - 1745-2481 issn: - 1745-2473 publication_status: published publisher: Springer Nature quality_controlled: '1' status: public title: Skyrmion solids in monolayer graphene type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 16 year: '2020' ... --- _id: '7567' abstract: - lang: eng text: Coxeter triangulations are triangulations of Euclidean space based on a single simplex. By this we mean that given an individual simplex we can recover the entire triangulation of Euclidean space by inductively reflecting in the faces of the simplex. In this paper we establish that the quality of the simplices in all Coxeter triangulations is O(1/d−−√) of the quality of regular simplex. We further investigate the Delaunay property for these triangulations. Moreover, we consider an extension of the Delaunay property, namely protection, which is a measure of non-degeneracy of a Delaunay triangulation. In particular, one family of Coxeter triangulations achieves the protection O(1/d2). We conjecture that both bounds are optimal for triangulations in Euclidean space. article_processing_charge: Yes (via OA deal) article_type: original author: - first_name: Aruni full_name: Choudhary, Aruni last_name: Choudhary - first_name: Siargey full_name: Kachanovich, Siargey last_name: Kachanovich - first_name: Mathijs full_name: Wintraecken, Mathijs id: 307CFBC8-F248-11E8-B48F-1D18A9856A87 last_name: Wintraecken orcid: 0000-0002-7472-2220 citation: ama: Choudhary A, Kachanovich S, Wintraecken M. Coxeter triangulations have good quality. Mathematics in Computer Science. 2020;14:141-176. doi:10.1007/s11786-020-00461-5 apa: Choudhary, A., Kachanovich, S., & Wintraecken, M. (2020). Coxeter triangulations have good quality. Mathematics in Computer Science. Springer Nature. https://doi.org/10.1007/s11786-020-00461-5 chicago: Choudhary, Aruni, Siargey Kachanovich, and Mathijs Wintraecken. “Coxeter Triangulations Have Good Quality.” Mathematics in Computer Science. Springer Nature, 2020. https://doi.org/10.1007/s11786-020-00461-5. ieee: A. Choudhary, S. Kachanovich, and M. Wintraecken, “Coxeter triangulations have good quality,” Mathematics in Computer Science, vol. 14. Springer Nature, pp. 141–176, 2020. ista: Choudhary A, Kachanovich S, Wintraecken M. 2020. Coxeter triangulations have good quality. Mathematics in Computer Science. 14, 141–176. mla: Choudhary, Aruni, et al. “Coxeter Triangulations Have Good Quality.” Mathematics in Computer Science, vol. 14, Springer Nature, 2020, pp. 141–76, doi:10.1007/s11786-020-00461-5. short: A. Choudhary, S. Kachanovich, M. Wintraecken, Mathematics in Computer Science 14 (2020) 141–176. corr_author: '1' date_created: 2020-03-05T13:30:18Z date_published: 2020-03-01T00:00:00Z date_updated: 2025-04-14T07:44:03Z day: '01' ddc: - '510' department: - _id: HeEd doi: 10.1007/s11786-020-00461-5 ec_funded: 1 file: - access_level: open_access checksum: 1d145f3ab50ccee735983cb89236e609 content_type: application/pdf creator: dernst date_created: 2020-11-20T10:18:02Z date_updated: 2020-11-20T10:18:02Z file_id: '8783' file_name: 2020_MathCompScie_Choudhary.pdf file_size: 872275 relation: main_file success: 1 file_date_updated: 2020-11-20T10:18:02Z has_accepted_license: '1' intvolume: ' 14' language: - iso: eng license: https://creativecommons.org/licenses/by/4.0/ month: '03' oa: 1 oa_version: Published Version page: 141-176 project: - _id: B67AFEDC-15C9-11EA-A837-991A96BB2854 name: IST Austria Open Access Fund - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: Mathematics in Computer Science publication_identifier: eissn: - 1661-8289 issn: - 1661-8270 publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: Coxeter triangulations have good quality tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 14 year: '2020' ... --- _id: '7569' abstract: - lang: eng text: 'Genes differ in the frequency at which they are expressed and in the form of regulation used to control their activity. In particular, positive or negative regulation can lead to activation of a gene in response to an external signal. Previous works proposed that the form of regulation of a gene correlates with its frequency of usage: positive regulation when the gene is frequently expressed and negative regulation when infrequently expressed. Such network design means that, in the absence of their regulators, the genes are found in their least required activity state, hence regulatory intervention is often necessary. Due to the multitude of genes and regulators, spurious binding and unbinding events, called “crosstalk”, could occur. To determine how the form of regulation affects the global crosstalk in the network, we used a mathematical model that includes multiple regulators and multiple target genes. We found that crosstalk depends non-monotonically on the availability of regulators. Our analysis showed that excess use of regulation entailed by the formerly suggested network design caused high crosstalk levels in a large part of the parameter space. We therefore considered the opposite ‘idle’ design, where the default unregulated state of genes is their frequently required activity state. We found, that ‘idle’ design minimized the use of regulation and thus minimized crosstalk. In addition, we estimated global crosstalk of S. cerevisiae using transcription factors binding data. We demonstrated that even partial network data could suffice to estimate its global crosstalk, suggesting its applicability to additional organisms. We found that S. cerevisiae estimated crosstalk is lower than that of a random network, suggesting that natural selection reduces crosstalk. In summary, our study highlights a new type of protein production cost which is typically overlooked: that of regulatory interference caused by the presence of excess regulators in the cell. It demonstrates the importance of whole-network descriptions, which could show effects missed by single-gene models.' article_number: e1007642 article_processing_charge: No article_type: original author: - first_name: Rok full_name: Grah, Rok id: 483E70DE-F248-11E8-B48F-1D18A9856A87 last_name: Grah orcid: 0000-0003-2539-3560 - first_name: Tamar full_name: Friedlander, Tamar last_name: Friedlander citation: ama: Grah R, Friedlander T. The relation between crosstalk and gene regulation form revisited. PLOS Computational Biology. 2020;16(2). doi:10.1371/journal.pcbi.1007642 apa: Grah, R., & Friedlander, T. (2020). The relation between crosstalk and gene regulation form revisited. PLOS Computational Biology. Public Library of Science. https://doi.org/10.1371/journal.pcbi.1007642 chicago: Grah, Rok, and Tamar Friedlander. “The Relation between Crosstalk and Gene Regulation Form Revisited.” PLOS Computational Biology. Public Library of Science, 2020. https://doi.org/10.1371/journal.pcbi.1007642. ieee: R. Grah and T. Friedlander, “The relation between crosstalk and gene regulation form revisited,” PLOS Computational Biology, vol. 16, no. 2. Public Library of Science, 2020. ista: Grah R, Friedlander T. 2020. The relation between crosstalk and gene regulation form revisited. PLOS Computational Biology. 16(2), e1007642. mla: Grah, Rok, and Tamar Friedlander. “The Relation between Crosstalk and Gene Regulation Form Revisited.” PLOS Computational Biology, vol. 16, no. 2, e1007642, Public Library of Science, 2020, doi:10.1371/journal.pcbi.1007642. short: R. Grah, T. Friedlander, PLOS Computational Biology 16 (2020). date_created: 2020-03-06T07:39:38Z date_published: 2020-02-25T00:00:00Z date_updated: 2026-04-08T07:25:08Z day: '25' ddc: - '000' - '570' department: - _id: CaGu - _id: GaTk doi: 10.1371/journal.pcbi.1007642 external_id: isi: - '000526725200019' pmid: - '32097416' file: - access_level: open_access checksum: 5239dd134dc6e1c71fe7b3ce2953da37 content_type: application/pdf creator: dernst date_created: 2020-03-09T15:12:21Z date_updated: 2020-07-14T12:48:00Z file_id: '7579' file_name: 2020_PlosCompBio_Grah.pdf file_size: 2209325 relation: main_file file_date_updated: 2020-07-14T12:48:00Z has_accepted_license: '1' intvolume: ' 16' isi: 1 issue: '2' language: - iso: eng month: '02' oa: 1 oa_version: Published Version pmid: 1 publication: PLOS Computational Biology publication_identifier: issn: - 1553-7358 publication_status: published publisher: Public Library of Science quality_controlled: '1' related_material: record: - id: '9716' relation: research_data status: deleted - id: '9776' relation: research_data status: public - id: '9779' relation: research_data status: public - id: '9777' relation: research_data status: public - id: '8155' relation: dissertation_contains status: public scopus_import: '1' status: public title: The relation between crosstalk and gene regulation form revisited tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 16 year: '2020' ... --- _id: '7570' abstract: - lang: eng text: The relaxation of few-body quantum systems can strongly depend on the initial state when the system’s semiclassical phase space is mixed; i.e., regions of chaotic motion coexist with regular islands. In recent years, there has been much effort to understand the process of thermalization in strongly interacting quantum systems that often lack an obvious semiclassical limit. The time-dependent variational principle (TDVP) allows one to systematically derive an effective classical (nonlinear) dynamical system by projecting unitary many-body dynamics onto a manifold of weakly entangled variational states. We demonstrate that such dynamical systems generally possess mixed phase space. When TDVP errors are small, the mixed phase space leaves a footprint on the exact dynamics of the quantum model. For example, when the system is initialized in a state belonging to a stable periodic orbit or the surrounding regular region, it exhibits persistent many-body quantum revivals. As a proof of principle, we identify new types of “quantum many-body scars,” i.e., initial states that lead to long-time oscillations in a model of interacting Rydberg atoms in one and two dimensions. Intriguingly, the initial states that give rise to most robust revivals are typically entangled states. On the other hand, even when TDVP errors are large, as in the thermalizing tilted-field Ising model, initializing the system in a regular region of phase space leads to a surprising slowdown of thermalization. Our work establishes TDVP as a method for identifying interacting quantum systems with anomalous dynamics in arbitrary dimensions. Moreover, the mixed phase space classical variational equations allow one to find slowly thermalizing initial conditions in interacting models. Our results shed light on a link between classical and quantum chaos, pointing toward possible extensions of the classical Kolmogorov-Arnold-Moser theorem to quantum systems. article_number: '011055' article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Alexios full_name: Michailidis, Alexios id: 36EBAD38-F248-11E8-B48F-1D18A9856A87 last_name: Michailidis orcid: 0000-0002-8443-1064 - first_name: C. J. full_name: Turner, C. J. last_name: Turner - first_name: Z. full_name: Papić, Z. last_name: Papić - first_name: D. A. full_name: Abanin, D. A. last_name: Abanin - first_name: Maksym full_name: Serbyn, Maksym id: 47809E7E-F248-11E8-B48F-1D18A9856A87 last_name: Serbyn orcid: 0000-0002-2399-5827 citation: ama: Michailidis A, Turner CJ, Papić Z, Abanin DA, Serbyn M. Slow quantum thermalization and many-body revivals from mixed phase space. Physical Review X. 2020;10(1). doi:10.1103/physrevx.10.011055 apa: Michailidis, A., Turner, C. J., Papić, Z., Abanin, D. A., & Serbyn, M. (2020). Slow quantum thermalization and many-body revivals from mixed phase space. Physical Review X. American Physical Society. https://doi.org/10.1103/physrevx.10.011055 chicago: Michailidis, Alexios, C. J. Turner, Z. Papić, D. A. Abanin, and Maksym Serbyn. “Slow Quantum Thermalization and Many-Body Revivals from Mixed Phase Space.” Physical Review X. American Physical Society, 2020. https://doi.org/10.1103/physrevx.10.011055. ieee: A. Michailidis, C. J. Turner, Z. Papić, D. A. Abanin, and M. Serbyn, “Slow quantum thermalization and many-body revivals from mixed phase space,” Physical Review X, vol. 10, no. 1. American Physical Society, 2020. ista: Michailidis A, Turner CJ, Papić Z, Abanin DA, Serbyn M. 2020. Slow quantum thermalization and many-body revivals from mixed phase space. Physical Review X. 10(1), 011055. mla: Michailidis, Alexios, et al. “Slow Quantum Thermalization and Many-Body Revivals from Mixed Phase Space.” Physical Review X, vol. 10, no. 1, 011055, American Physical Society, 2020, doi:10.1103/physrevx.10.011055. short: A. Michailidis, C.J. Turner, Z. Papić, D.A. Abanin, M. Serbyn, Physical Review X 10 (2020). date_created: 2020-03-08T18:02:01Z date_published: 2020-03-04T00:00:00Z date_updated: 2023-08-18T07:01:07Z day: '04' ddc: - '530' department: - _id: MaSe doi: 10.1103/physrevx.10.011055 external_id: arxiv: - '1905.08564' isi: - '000517969300001' file: - access_level: open_access checksum: 4b3f2c13873d35230173c73d0e11c408 content_type: application/pdf creator: dernst date_created: 2020-03-12T12:13:07Z date_updated: 2020-07-14T12:48:00Z file_id: '7581' file_name: 2020_PhysicalReviewX_Michailidis.pdf file_size: 17828638 relation: main_file file_date_updated: 2020-07-14T12:48:00Z has_accepted_license: '1' intvolume: ' 10' isi: 1 issue: '1' language: - iso: eng month: '03' oa: 1 oa_version: Published Version publication: Physical Review X publication_identifier: issn: - 2160-3308 publication_status: published publisher: American Physical Society quality_controlled: '1' related_material: link: - description: News on IST Homepage relation: press_release url: https://ist.ac.at/en/news/classical-physics-helps-predict-fate-of-interacting-quantum-systems/ scopus_import: '1' status: public title: Slow quantum thermalization and many-body revivals from mixed phase space tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 10 year: '2020' ... --- _id: '7572' abstract: - lang: eng text: The polymerization–depolymerization dynamics of cytoskeletal proteins play essential roles in the self-organization of cytoskeletal structures, in eukaryotic as well as prokaryotic cells. While advances in fluorescence microscopy and in vitro reconstitution experiments have helped to study the dynamic properties of these complex systems, methods that allow to collect and analyze large quantitative datasets of the underlying polymer dynamics are still missing. Here, we present a novel image analysis workflow to study polymerization dynamics of active filaments in a nonbiased, highly automated manner. Using treadmilling filaments of the bacterial tubulin FtsZ as an example, we demonstrate that our method is able to specifically detect, track and analyze growth and shrinkage of polymers, even in dense networks of filaments. We believe that this automated method can facilitate the analysis of a large variety of dynamic cytoskeletal systems, using standard time-lapse movies obtained from experiments in vitro as well as in the living cell. Moreover, we provide scripts implementing this method as supplementary material. alternative_title: - Methods in Cell Biology article_processing_charge: No author: - first_name: Paulo R full_name: Dos Santos Caldas, Paulo R id: 38FCDB4C-F248-11E8-B48F-1D18A9856A87 last_name: Dos Santos Caldas orcid: 0000-0001-6730-4461 - first_name: Philipp full_name: Radler, Philipp id: 40136C2A-F248-11E8-B48F-1D18A9856A87 last_name: Radler orcid: '0000-0001-9198-2182 ' - first_name: Christoph M full_name: Sommer, Christoph M id: 4DF26D8C-F248-11E8-B48F-1D18A9856A87 last_name: Sommer orcid: 0000-0003-1216-9105 - first_name: Martin full_name: Loose, Martin id: 462D4284-F248-11E8-B48F-1D18A9856A87 last_name: Loose orcid: 0000-0001-7309-9724 citation: ama: 'Dos Santos Caldas PR, Radler P, Sommer CM, Loose M. Computational analysis of filament polymerization dynamics in cytoskeletal networks. In: Tran P, ed. Methods in Cell Biology. Vol 158. Elsevier; 2020:145-161. doi:10.1016/bs.mcb.2020.01.006' apa: Dos Santos Caldas, P. R., Radler, P., Sommer, C. M., & Loose, M. (2020). Computational analysis of filament polymerization dynamics in cytoskeletal networks. In P. Tran (Ed.), Methods in Cell Biology (Vol. 158, pp. 145–161). Elsevier. https://doi.org/10.1016/bs.mcb.2020.01.006 chicago: Dos Santos Caldas, Paulo R, Philipp Radler, Christoph M Sommer, and Martin Loose. “Computational Analysis of Filament Polymerization Dynamics in Cytoskeletal Networks.” In Methods in Cell Biology, edited by Phong Tran, 158:145–61. Elsevier, 2020. https://doi.org/10.1016/bs.mcb.2020.01.006. ieee: P. R. Dos Santos Caldas, P. Radler, C. M. Sommer, and M. Loose, “Computational analysis of filament polymerization dynamics in cytoskeletal networks,” in Methods in Cell Biology, vol. 158, P. Tran, Ed. Elsevier, 2020, pp. 145–161. ista: 'Dos Santos Caldas PR, Radler P, Sommer CM, Loose M. 2020.Computational analysis of filament polymerization dynamics in cytoskeletal networks. In: Methods in Cell Biology. Methods in Cell Biology, vol. 158, 145–161.' mla: Dos Santos Caldas, Paulo R., et al. “Computational Analysis of Filament Polymerization Dynamics in Cytoskeletal Networks.” Methods in Cell Biology, edited by Phong Tran, vol. 158, Elsevier, 2020, pp. 145–61, doi:10.1016/bs.mcb.2020.01.006. short: P.R. Dos Santos Caldas, P. Radler, C.M. Sommer, M. Loose, in:, P. Tran (Ed.), Methods in Cell Biology, Elsevier, 2020, pp. 145–161. date_created: 2020-03-08T23:00:47Z date_published: 2020-02-27T00:00:00Z date_updated: 2026-04-08T07:26:30Z day: '27' department: - _id: MaLo doi: 10.1016/bs.mcb.2020.01.006 ec_funded: 1 editor: - first_name: 'Phong ' full_name: 'Tran, Phong ' last_name: Tran external_id: isi: - '000611826500008' intvolume: ' 158' isi: 1 language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1101/839571 month: '02' oa: 1 oa_version: Preprint page: 145-161 project: - _id: 2595697A-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '679239' name: Self-Organization of the Bacterial Cell - _id: 260D98C8-B435-11E9-9278-68D0E5697425 name: Reconstitution of Bacterial Cell Division Using Purified Components publication: Methods in Cell Biology publication_identifier: issn: - 0091-679X publication_status: published publisher: Elsevier quality_controlled: '1' related_material: record: - id: '8358' relation: part_of_dissertation status: public scopus_import: '1' status: public title: Computational analysis of filament polymerization dynamics in cytoskeletal networks type: book_chapter user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 158 year: '2020' ... --- _id: '7573' abstract: - lang: eng text: This paper deals with dynamical optimal transport metrics defined by spatial discretisation of the Benamou–Benamou formula for the Kantorovich metric . Such metrics appear naturally in discretisations of -gradient flow formulations for dissipative PDE. However, it has recently been shown that these metrics do not in general converge to , unless strong geometric constraints are imposed on the discrete mesh. In this paper we prove that, in a 1-dimensional periodic setting, discrete transport metrics converge to a limiting transport metric with a non-trivial effective mobility. This mobility depends sensitively on the geometry of the mesh and on the non-local mobility at the discrete level. Our result quantifies to what extent discrete transport can make use of microstructure in the mesh to reduce the cost of transport. acknowledgement: J.M. gratefully acknowledges support by the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement No 716117). J.M. and L.P. also acknowledge support from the Austrian Science Fund (FWF), grants No F65 and W1245. E.K. gratefully acknowledges support by the German Research Foundation through the Hausdorff Center for Mathematics and the Collaborative Research Center 1060. P.G. is partially funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – 350398276. article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Peter full_name: Gladbach, Peter last_name: Gladbach - first_name: Eva full_name: Kopfer, Eva last_name: Kopfer - first_name: Jan full_name: Maas, Jan id: 4C5696CE-F248-11E8-B48F-1D18A9856A87 last_name: Maas orcid: 0000-0002-0845-1338 - first_name: Lorenzo full_name: Portinale, Lorenzo id: 30AD2CBC-F248-11E8-B48F-1D18A9856A87 last_name: Portinale citation: ama: Gladbach P, Kopfer E, Maas J, Portinale L. Homogenisation of one-dimensional discrete optimal transport. Journal de Mathematiques Pures et Appliquees. 2020;139(7):204-234. doi:10.1016/j.matpur.2020.02.008 apa: Gladbach, P., Kopfer, E., Maas, J., & Portinale, L. (2020). Homogenisation of one-dimensional discrete optimal transport. Journal de Mathematiques Pures et Appliquees. Elsevier. https://doi.org/10.1016/j.matpur.2020.02.008 chicago: Gladbach, Peter, Eva Kopfer, Jan Maas, and Lorenzo Portinale. “Homogenisation of One-Dimensional Discrete Optimal Transport.” Journal de Mathematiques Pures et Appliquees. Elsevier, 2020. https://doi.org/10.1016/j.matpur.2020.02.008. ieee: P. Gladbach, E. Kopfer, J. Maas, and L. Portinale, “Homogenisation of one-dimensional discrete optimal transport,” Journal de Mathematiques Pures et Appliquees, vol. 139, no. 7. Elsevier, pp. 204–234, 2020. ista: Gladbach P, Kopfer E, Maas J, Portinale L. 2020. Homogenisation of one-dimensional discrete optimal transport. Journal de Mathematiques Pures et Appliquees. 139(7), 204–234. mla: Gladbach, Peter, et al. “Homogenisation of One-Dimensional Discrete Optimal Transport.” Journal de Mathematiques Pures et Appliquees, vol. 139, no. 7, Elsevier, 2020, pp. 204–34, doi:10.1016/j.matpur.2020.02.008. short: P. Gladbach, E. Kopfer, J. Maas, L. Portinale, Journal de Mathematiques Pures et Appliquees 139 (2020) 204–234. date_created: 2020-03-08T23:00:47Z date_published: 2020-07-01T00:00:00Z date_updated: 2026-04-08T07:00:03Z day: '01' department: - _id: JaMa doi: 10.1016/j.matpur.2020.02.008 ec_funded: 1 external_id: arxiv: - '1905.05757' isi: - '000539439400008' intvolume: ' 139' isi: 1 issue: '7' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1905.05757 month: '07' oa: 1 oa_version: Preprint page: 204-234 project: - _id: 256E75B8-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '716117' name: Optimal Transport and Stochastic Dynamics - _id: 260482E2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: F06504 name: Taming Complexity in Partial Differential Systems - _id: 260788DE-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: W1245 name: Dissipation and dispersion in nonlinear partial differential equations publication: Journal de Mathematiques Pures et Appliquees publication_identifier: issn: - 0021-7824 publication_status: published publisher: Elsevier quality_controlled: '1' related_material: record: - id: '10030' relation: dissertation_contains status: public scopus_import: '1' status: public title: Homogenisation of one-dimensional discrete optimal transport type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 139 year: '2020' ... --- _id: '7580' abstract: - lang: eng text: The eukaryotic endomembrane system is controlled by small GTPases of the Rab family, which are activated at defined times and locations in a switch-like manner. While this switch is well understood for an individual protein, how regulatory networks produce intracellular activity patterns is currently not known. Here, we combine in vitro reconstitution experiments with computational modeling to study a minimal Rab5 activation network. We find that the molecular interactions in this system give rise to a positive feedback and bistable collective switching of Rab5. Furthermore, we find that switching near the critical point is intrinsically stochastic and provide evidence that controlling the inactive population of Rab5 on the membrane can shape the network response. Notably, we demonstrate that collective switching can spread on the membrane surface as a traveling wave of Rab5 activation. Together, our findings reveal how biochemical signaling networks control vesicle trafficking pathways and how their nonequilibrium properties define the spatiotemporal organization of the cell. acknowledged_ssus: - _id: Bio - _id: LifeSc article_processing_charge: No article_type: original author: - first_name: Urban full_name: Bezeljak, Urban id: 2A58201A-F248-11E8-B48F-1D18A9856A87 last_name: Bezeljak orcid: 0000-0003-1365-5631 - first_name: Hrushikesh full_name: Loya, Hrushikesh last_name: Loya - first_name: Beata M full_name: Kaczmarek, Beata M id: 36FA4AFA-F248-11E8-B48F-1D18A9856A87 last_name: Kaczmarek - first_name: Timothy E. full_name: Saunders, Timothy E. last_name: Saunders - first_name: Martin full_name: Loose, Martin id: 462D4284-F248-11E8-B48F-1D18A9856A87 last_name: Loose orcid: 0000-0001-7309-9724 citation: ama: Bezeljak U, Loya H, Kaczmarek BM, Saunders TE, Loose M. Stochastic activation and bistability in a Rab GTPase regulatory network. Proceedings of the National Academy of Sciences of the United States of America. 2020;117(12):6504-6549. doi:10.1073/pnas.1921027117 apa: Bezeljak, U., Loya, H., Kaczmarek, B. M., Saunders, T. E., & Loose, M. (2020). Stochastic activation and bistability in a Rab GTPase regulatory network. Proceedings of the National Academy of Sciences of the United States of America. National Academy of Sciences. https://doi.org/10.1073/pnas.1921027117 chicago: Bezeljak, Urban, Hrushikesh Loya, Beata M Kaczmarek, Timothy E. Saunders, and Martin Loose. “Stochastic Activation and Bistability in a Rab GTPase Regulatory Network.” Proceedings of the National Academy of Sciences of the United States of America. National Academy of Sciences, 2020. https://doi.org/10.1073/pnas.1921027117. ieee: U. Bezeljak, H. Loya, B. M. Kaczmarek, T. E. Saunders, and M. Loose, “Stochastic activation and bistability in a Rab GTPase regulatory network,” Proceedings of the National Academy of Sciences of the United States of America, vol. 117, no. 12. National Academy of Sciences, pp. 6504–6549, 2020. ista: Bezeljak U, Loya H, Kaczmarek BM, Saunders TE, Loose M. 2020. Stochastic activation and bistability in a Rab GTPase regulatory network. Proceedings of the National Academy of Sciences of the United States of America. 117(12), 6504–6549. mla: Bezeljak, Urban, et al. “Stochastic Activation and Bistability in a Rab GTPase Regulatory Network.” Proceedings of the National Academy of Sciences of the United States of America, vol. 117, no. 12, National Academy of Sciences, 2020, pp. 6504–49, doi:10.1073/pnas.1921027117. short: U. Bezeljak, H. Loya, B.M. Kaczmarek, T.E. Saunders, M. Loose, Proceedings of the National Academy of Sciences of the United States of America 117 (2020) 6504–6549. date_created: 2020-03-12T05:32:26Z date_published: 2020-03-24T00:00:00Z date_updated: 2026-04-08T07:24:55Z day: '24' department: - _id: MaLo - _id: CaBe doi: 10.1073/pnas.1921027117 external_id: isi: - '000521821800040' pmid: - '32161136' intvolume: ' 117' isi: 1 issue: '12' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1101/776567 month: '03' oa: 1 oa_version: Preprint page: 6504-6549 pmid: 1 project: - _id: 2599F062-B435-11E9-9278-68D0E5697425 grant_number: RGY0083/2016 name: Reconstitution of cell polarity and axis determination in a cell-free system publication: Proceedings of the National Academy of Sciences of the United States of America publication_identifier: eissn: - 1091-6490 issn: - 0027-8424 publication_status: published publisher: National Academy of Sciences quality_controlled: '1' related_material: link: - description: News on IST Homepage relation: press_release url: https://ist.ac.at/en/news/proteins-as-molecular-switches/ record: - id: '8341' relation: dissertation_contains status: public scopus_import: '1' status: public title: Stochastic activation and bistability in a Rab GTPase regulatory network type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 117 year: '2020' ... --- _id: '7582' abstract: - lang: eng text: Small RNAs (smRNA, 19–25 nucleotides long), which are transcribed by RNA polymerase II, regulate the expression of genes involved in a multitude of processes in eukaryotes. miRNA biogenesis and the proteins involved in the biogenesis pathway differ across plant and animal lineages. The major proteins constituting the biogenesis pathway, namely, the Dicers (DCL/DCR) and Argonautes (AGOs), have been extensively studied. However, the accessory proteins (DAWDLE (DDL), SERRATE (SE), and TOUGH (TGH)) of the pathway that differs across the two lineages remain largely uncharacterized. We present the first detailed report on the molecular evolution and divergence of these proteins across eukaryotes. Although DDL is present in eukaryotes and prokaryotes, SE and TGH appear to be specific to eukaryotes. The addition/deletion of specific domains and/or domain-specific sequence divergence in the three proteins points to the observed functional divergence of these proteins across the two lineages, which correlates with the differences in miRNA length across the two lineages. Our data enhance the current understanding of the structure–function relationship of these proteins and reveals previous unexplored crucial residues in the three proteins that can be used as a basis for further functional characterization. The data presented here on the number of miRNAs in crown eukaryotic lineages are consistent with the notion of the expansion of the number of miRNA-coding genes in animal and plant lineages correlating with organismal complexity. Whether this difference in functionally correlates with the diversification (or presence/absence) of the three proteins studied here or the miRNA signaling in the plant and animal lineages is unclear. Based on our results of the three proteins studied here and previously available data concerning the evolution of miRNA genes in the plant and animal lineages, we believe that miRNAs probably evolved once in the ancestor to crown eukaryotes and have diversified independently in the eukaryotes. article_number: '299' article_processing_charge: No article_type: original author: - first_name: Taraka Ramji full_name: Moturu, Taraka Ramji last_name: Moturu - first_name: Sansrity full_name: Sinha, Sansrity last_name: Sinha - first_name: Hymavathi full_name: Salava, Hymavathi last_name: Salava - first_name: Sravankumar full_name: Thula, Sravankumar last_name: Thula - first_name: Tomasz full_name: Nodzyński, Tomasz last_name: Nodzyński - first_name: Radka Svobodová full_name: Vařeková, Radka Svobodová last_name: Vařeková - first_name: Jiří full_name: Friml, Jiří id: 4159519E-F248-11E8-B48F-1D18A9856A87 last_name: Friml orcid: 0000-0002-8302-7596 - first_name: Sibu full_name: Simon, Sibu id: 4542EF9A-F248-11E8-B48F-1D18A9856A87 last_name: Simon orcid: 0000-0002-1998-6741 citation: ama: Moturu TR, Sinha S, Salava H, et al. Molecular evolution and diversification of proteins involved in miRNA maturation pathway. Plants. 2020;9(3). doi:10.3390/plants9030299 apa: Moturu, T. R., Sinha, S., Salava, H., Thula, S., Nodzyński, T., Vařeková, R. S., … Simon, S. (2020). Molecular evolution and diversification of proteins involved in miRNA maturation pathway. Plants. MDPI. https://doi.org/10.3390/plants9030299 chicago: Moturu, Taraka Ramji, Sansrity Sinha, Hymavathi Salava, Sravankumar Thula, Tomasz Nodzyński, Radka Svobodová Vařeková, Jiří Friml, and Sibu Simon. “Molecular Evolution and Diversification of Proteins Involved in MiRNA Maturation Pathway.” Plants. MDPI, 2020. https://doi.org/10.3390/plants9030299. ieee: T. R. Moturu et al., “Molecular evolution and diversification of proteins involved in miRNA maturation pathway,” Plants, vol. 9, no. 3. MDPI, 2020. ista: Moturu TR, Sinha S, Salava H, Thula S, Nodzyński T, Vařeková RS, Friml J, Simon S. 2020. Molecular evolution and diversification of proteins involved in miRNA maturation pathway. Plants. 9(3), 299. mla: Moturu, Taraka Ramji, et al. “Molecular Evolution and Diversification of Proteins Involved in MiRNA Maturation Pathway.” Plants, vol. 9, no. 3, 299, MDPI, 2020, doi:10.3390/plants9030299. short: T.R. Moturu, S. Sinha, H. Salava, S. Thula, T. Nodzyński, R.S. Vařeková, J. Friml, S. Simon, Plants 9 (2020). corr_author: '1' date_created: 2020-03-15T23:00:52Z date_published: 2020-03-01T00:00:00Z date_updated: 2026-04-02T14:35:47Z day: '01' ddc: - '580' department: - _id: JiFr doi: 10.3390/plants9030299 ec_funded: 1 external_id: isi: - '000525315000035' pmid: - '32121542' file: - access_level: open_access checksum: 6d5af3e17266a48996b4af4e67e88a85 content_type: application/pdf creator: dernst date_created: 2020-03-23T13:37:00Z date_updated: 2020-07-14T12:48:00Z file_id: '7614' file_name: 2020_Plants_Moturu.pdf file_size: 2373484 relation: main_file file_date_updated: 2020-07-14T12:48:00Z has_accepted_license: '1' intvolume: ' 9' isi: 1 issue: '3' language: - iso: eng month: '03' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 25716A02-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '282300' name: Polarity and subcellular dynamics in plants publication: Plants publication_identifier: eissn: - 2223-7747 publication_status: published publisher: MDPI quality_controlled: '1' scopus_import: '1' status: public title: Molecular evolution and diversification of proteins involved in miRNA maturation pathway tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd volume: 9 year: '2020' ...