--- OA_place: publisher _id: '8155' abstract: - lang: eng text: "In the thesis we focus on the interplay of the biophysics and evolution of gene regulation. We start by addressing how the type of prokaryotic gene regulation – activation and repression – affects spurious binding to DNA, also known as\r\ntranscriptional crosstalk. We propose that regulatory interference caused by excess regulatory proteins in the dense cellular medium – global crosstalk – could be a factor in determining which type of gene regulatory network is evolutionarily preferred. Next,we use a normative approach in eukaryotic gene regulation to describe minimal\r\nnon-equilibrium enhancer models that optimize so-called regulatory phenotypes. We find a class of models that differ from standard thermodynamic equilibrium models by a single parameter that notably increases the regulatory performance. Next chapter addresses the question of genotype-phenotype-fitness maps of higher dimensional phenotypes. We show that our biophysically realistic approach allows us to understand how the mechanisms of promoter function constrain genotypephenotype maps, and how they affect the evolutionary trajectories of promoters.\r\nIn the last chapter we ask whether the intrinsic instability of gene duplication and amplification provides a generic alternative to canonical gene regulation. Using mathematical modeling, we show that amplifications can tune gene expression in many environments, including those where transcription factor-based schemes are\r\nhard to evolve or maintain. " acknowledgement: For the duration of his PhD, Rok was a recipient of a DOC fellowship of the Austrian Academy of Sciences. alternative_title: - ISTA Thesis article_processing_charge: No author: - first_name: Rok full_name: Grah, Rok id: 483E70DE-F248-11E8-B48F-1D18A9856A87 last_name: Grah orcid: 0000-0003-2539-3560 citation: ama: Grah R. Gene regulation across scales – how biophysical constraints shape evolution. 2020. doi:10.15479/AT:ISTA:8155 apa: Grah, R. (2020). Gene regulation across scales – how biophysical constraints shape evolution. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:8155 chicago: Grah, Rok. “Gene Regulation across Scales – How Biophysical Constraints Shape Evolution.” Institute of Science and Technology Austria, 2020. https://doi.org/10.15479/AT:ISTA:8155. ieee: R. Grah, “Gene regulation across scales – how biophysical constraints shape evolution,” Institute of Science and Technology Austria, 2020. ista: Grah R. 2020. Gene regulation across scales – how biophysical constraints shape evolution. Institute of Science and Technology Austria. mla: Grah, Rok. Gene Regulation across Scales – How Biophysical Constraints Shape Evolution. Institute of Science and Technology Austria, 2020, doi:10.15479/AT:ISTA:8155. short: R. Grah, Gene Regulation across Scales – How Biophysical Constraints Shape Evolution, Institute of Science and Technology Austria, 2020. corr_author: '1' date_created: 2020-07-23T09:51:28Z date_published: 2020-07-24T00:00:00Z date_updated: 2026-07-06T12:43:42Z day: '24' ddc: - '530' - '570' degree_awarded: PhD department: - _id: CaGu - _id: GaTk doi: 10.15479/AT:ISTA:8155 file: - access_level: open_access content_type: application/pdf creator: rgrah date_created: 2020-07-27T12:00:07Z date_updated: 2020-07-27T12:00:07Z file_id: '8176' file_name: Thesis_RokGrah_200727_convertedNew.pdf file_size: 16638998 relation: main_file success: 1 - access_level: closed content_type: application/zip creator: rgrah date_created: 2020-07-27T12:02:23Z date_updated: 2020-07-30T13:04:55Z file_id: '8177' file_name: Thesis_new.zip file_size: 347459978 relation: main_file file_date_updated: 2020-07-30T13:04:55Z has_accepted_license: '1' language: - iso: eng month: '07' oa: 1 oa_version: Published Version page: '310' project: - _id: 267C84F4-B435-11E9-9278-68D0E5697425 name: Biophysically realistic genotype-phenotype maps for regulatory networks publication_identifier: issn: - 2663-337X publication_status: published publisher: Institute of Science and Technology Austria related_material: record: - id: '7569' relation: part_of_dissertation status: public - id: '7652' relation: part_of_dissertation status: public - id: '7675' relation: part_of_dissertation status: public status: public supervisor: - first_name: Calin C full_name: Guet, Calin C id: 47F8433E-F248-11E8-B48F-1D18A9856A87 last_name: Guet orcid: 0000-0001-6220-2052 - first_name: Gašper full_name: Tkačik, Gašper id: 3D494DCA-F248-11E8-B48F-1D18A9856A87 last_name: Tkačik orcid: 0000-0002-6699-1455 title: Gene regulation across scales – how biophysical constraints shape evolution type: dissertation user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd year: '2020' ... --- _id: '7675' abstract: - lang: eng text: 'In prokaryotes, thermodynamic models of gene regulation provide a highly quantitative mapping from promoter sequences to gene expression levels that is compatible with in vivo and in vitro bio-physical measurements. Such concordance has not been achieved for models of enhancer function in eukaryotes. In equilibrium models, it is difficult to reconcile the reported short transcription factor (TF) residence times on the DNA with the high specificity of regulation. In non-equilibrium models, progress is difficult due to an explosion in the number of parameters. Here, we navigate this complexity by looking for minimal non-equilibrium enhancer models that yield desired regulatory phenotypes: low TF residence time, high specificity and tunable cooperativity. We find that a single extra parameter, interpretable as the “linking rate” by which bound TFs interact with Mediator components, enables our models to escape equilibrium bounds and access optimal regulatory phenotypes, while remaining consistent with the reported phenomenology and simple enough to be inferred from upcoming experiments. We further find that high specificity in non-equilibrium models is in a tradeoff with gene expression noise, predicting bursty dynamics — an experimentally-observed hallmark of eukaryotic transcription. By drastically reducing the vast parameter space to a much smaller subspace that optimally realizes biological function prior to inference from data, our normative approach holds promise for mathematical models in systems biology.' article_processing_charge: No author: - first_name: Rok full_name: Grah, Rok id: 483E70DE-F248-11E8-B48F-1D18A9856A87 last_name: Grah orcid: 0000-0003-2539-3560 - first_name: Benjamin full_name: Zoller, Benjamin last_name: Zoller - first_name: Gašper full_name: Tkačik, Gašper id: 3D494DCA-F248-11E8-B48F-1D18A9856A87 last_name: Tkačik orcid: 0000-0002-6699-1455 biorxivid: 1 citation: ama: Grah R, Zoller B, Tkačik G. Normative models of enhancer function. bioRxiv. 2020. doi:10.1101/2020.04.08.029405 apa: Grah, R., Zoller, B., & Tkačik, G. (2020). Normative models of enhancer function. bioRxiv. https://doi.org/10.1101/2020.04.08.029405 chicago: Grah, Rok, Benjamin Zoller, and Gašper Tkačik. “Normative Models of Enhancer Function.” BioRxiv, 2020. https://doi.org/10.1101/2020.04.08.029405. ieee: R. Grah, B. Zoller, and G. Tkačik, “Normative models of enhancer function,” bioRxiv. 2020. ista: Grah R, Zoller B, Tkačik G. 2020. Normative models of enhancer function. bioRxiv, 10.1101/2020.04.08.029405. mla: Grah, Rok, et al. “Normative Models of Enhancer Function.” BioRxiv, 2020, doi:10.1101/2020.04.08.029405. short: R. Grah, B. Zoller, G. Tkačik, BioRxiv (2020). corr_author: '1' das_tickbox: '1' date_created: 2020-04-23T10:12:51Z date_published: 2020-04-09T00:00:00Z date_updated: 2026-07-06T12:43:43Z day: '09' department: - _id: CaGu - _id: GaTk doi: 10.1101/2020.04.08.029405 external_id: biorxivid: - 10.1101/2020.04.08.029405 language: - iso: eng main_file_link: - open_access: '1' url: 'https://doi.org/10.1101/2020.04.08.029405 ' month: '04' oa: 1 oa_version: Preprint project: - _id: 2665AAFE-B435-11E9-9278-68D0E5697425 grant_number: RGP0034/2018 name: Can evolution minimize spurious signaling crosstalk to reach optimal performance? - _id: 267C84F4-B435-11E9-9278-68D0E5697425 name: Biophysically realistic genotype-phenotype maps for regulatory networks publication: bioRxiv publication_status: published related_material: record: - id: '8155' relation: dissertation_contains status: public status: public title: Normative models of enhancer function type: preprint user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2020' ... --- _id: '8813' abstract: - lang: eng text: 'In mammals, chromatin marks at imprinted genes are asymmetrically inherited to control parentally-biased gene expression. This control is thought predominantly to involve parent-specific differentially methylated regions (DMR) in genomic DNA. However, neither parent-of-origin-specific transcription nor DMRs have been comprehensively mapped. We here address this by integrating transcriptomic and epigenomic approaches in mouse preimplantation embryos (blastocysts). Transcriptome-analysis identified 71 genes expressed with previously unknown parent-of-origin-specific expression in blastocysts (nBiX: novel blastocyst-imprinted expression). Uniparental expression of nBiX genes disappeared soon after implantation. Micro-whole-genome bisulfite sequencing (μWGBS) of individual uniparental blastocysts detected 859 DMRs. Only 18% of nBiXs were associated with a DMR, whereas 60% were associated with parentally-biased H3K27me3. This suggests a major role for Polycomb-mediated imprinting in blastocysts. Five nBiX-clusters contained at least one known imprinted gene, and five novel clusters contained exclusively nBiX-genes. These data suggest a complex program of stage-specific imprinting involving different tiers of regulation.' article_processing_charge: No author: - first_name: Laura full_name: Santini, Laura last_name: Santini - first_name: Florian full_name: Halbritter, Florian last_name: Halbritter - first_name: Fabian full_name: Titz-Teixeira, Fabian last_name: Titz-Teixeira - first_name: Toru full_name: Suzuki, Toru last_name: Suzuki - first_name: Maki full_name: Asami, Maki last_name: Asami - first_name: Julia full_name: Ramesmayer, Julia last_name: Ramesmayer - first_name: Xiaoyan full_name: Ma, Xiaoyan last_name: Ma - first_name: Andreas full_name: Lackner, Andreas last_name: Lackner - first_name: Nick full_name: Warr, Nick last_name: Warr - first_name: Florian full_name: Pauler, Florian id: 48EA0138-F248-11E8-B48F-1D18A9856A87 last_name: Pauler orcid: 0000-0002-7462-0048 - first_name: Simon full_name: Hippenmeyer, Simon id: 37B36620-F248-11E8-B48F-1D18A9856A87 last_name: Hippenmeyer orcid: 0000-0003-2279-1061 - first_name: Ernest full_name: Laue, Ernest last_name: Laue - first_name: Matthias full_name: Farlik, Matthias last_name: Farlik - first_name: Christoph full_name: Bock, Christoph last_name: Bock - first_name: Andreas full_name: Beyer, Andreas last_name: Beyer - first_name: Anthony C. F. full_name: Perry, Anthony C. F. last_name: Perry - first_name: Martin full_name: Leeb, Martin last_name: Leeb citation: ama: Santini L, Halbritter F, Titz-Teixeira F, et al. Novel imprints in mouse blastocysts are predominantly DNA methylation independent. bioRxiv. doi:10.1101/2020.11.03.366948 apa: Santini, L., Halbritter, F., Titz-Teixeira, F., Suzuki, T., Asami, M., Ramesmayer, J., … Leeb, M. (n.d.). Novel imprints in mouse blastocysts are predominantly DNA methylation independent. bioRxiv. https://doi.org/10.1101/2020.11.03.366948 chicago: Santini, Laura, Florian Halbritter, Fabian Titz-Teixeira, Toru Suzuki, Maki Asami, Julia Ramesmayer, Xiaoyan Ma, et al. “Novel Imprints in Mouse Blastocysts Are Predominantly DNA Methylation Independent.” BioRxiv, n.d. https://doi.org/10.1101/2020.11.03.366948. ieee: L. Santini et al., “Novel imprints in mouse blastocysts are predominantly DNA methylation independent,” bioRxiv. . ista: Santini L, Halbritter F, Titz-Teixeira F, Suzuki T, Asami M, Ramesmayer J, Ma X, Lackner A, Warr N, Pauler F, Hippenmeyer S, Laue E, Farlik M, Bock C, Beyer A, Perry ACF, Leeb M. Novel imprints in mouse blastocysts are predominantly DNA methylation independent. bioRxiv, 10.1101/2020.11.03.366948. mla: Santini, Laura, et al. “Novel Imprints in Mouse Blastocysts Are Predominantly DNA Methylation Independent.” BioRxiv, doi:10.1101/2020.11.03.366948. short: L. Santini, F. Halbritter, F. Titz-Teixeira, T. Suzuki, M. Asami, J. Ramesmayer, X. Ma, A. Lackner, N. Warr, F. Pauler, S. Hippenmeyer, E. Laue, M. Farlik, C. Bock, A. Beyer, A.C.F. Perry, M. Leeb, BioRxiv (n.d.). das_tickbox: '1' date_created: 2020-11-26T07:17:19Z date_published: 2020-11-05T00:00:00Z date_updated: 2026-07-06T12:45:07Z day: '05' department: - _id: SiHi doi: 10.1101/2020.11.03.366948 external_id: pmid: - 'PPR234457 ' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1101/2020.11.03.366948 month: '11' oa: 1 oa_version: Preprint pmid: 1 publication: bioRxiv publication_status: submitted status: public title: Novel imprints in mouse blastocysts are predominantly DNA methylation independent type: preprint user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2020' ... --- _id: '7601' abstract: - lang: eng text: Plasmodesmata (PD) are crucial structures for intercellular communication in multicellular plants with remorins being their crucial plant-specific structural and functional constituents. The PD biogenesis is an intriguing but poorly understood process. By expressing an Arabidopsis remorin protein in mammalian cells, we have reconstituted a PD-like filamentous structure, termed remorin filament (RF), connecting neighboring cells physically and physiologically. Notably, RFs are capable of transporting macromolecules intercellularly, in a way similar to plant PD. With further super-resolution microscopic analysis and biochemical characterization, we found that RFs are also composed of actin filaments, forming the core skeleton structure, aligned with the remorin protein. This unique heterologous filamentous structure might explain the molecular mechanism for remorin function as well as PD construction. Furthermore, remorin protein exhibits a specific distribution manner in the plasma membrane in mammalian cells, representing a lipid nanodomain, depending on its lipid modification status. Our studies not only provide crucial insights into the mechanism of PD biogenesis, but also uncovers unsuspected fundamental mechanistic and evolutionary links between intercellular communication systems of plants and animals. article_processing_charge: No author: - first_name: Zhuang full_name: Wei, Zhuang last_name: Wei - first_name: Shutang full_name: Tan, Shutang id: 2DE75584-F248-11E8-B48F-1D18A9856A87 last_name: Tan orcid: 0000-0002-0471-8285 - first_name: Tao full_name: Liu, Tao last_name: Liu - first_name: Yuan full_name: Wu, Yuan last_name: Wu - first_name: Ji-Gang full_name: Lei, Ji-Gang last_name: Lei - first_name: ZhengJun full_name: Chen, ZhengJun last_name: Chen - first_name: Jiří full_name: Friml, Jiří id: 4159519E-F248-11E8-B48F-1D18A9856A87 last_name: Friml orcid: 0000-0002-8302-7596 - first_name: Hong-Wei full_name: Xue, Hong-Wei last_name: Xue - first_name: Kan full_name: Liao, Kan last_name: Liao citation: ama: Wei Z, Tan S, Liu T, et al. Plasmodesmata-like intercellular connections by plant remorin in animal cells. bioRxiv. 2020. doi:10.1101/791137 apa: Wei, Z., Tan, S., Liu, T., Wu, Y., Lei, J.-G., Chen, Z., … Liao, K. (2020). Plasmodesmata-like intercellular connections by plant remorin in animal cells. bioRxiv. https://doi.org/10.1101/791137 chicago: Wei, Zhuang, Shutang Tan, Tao Liu, Yuan Wu, Ji-Gang Lei, ZhengJun Chen, Jiří Friml, Hong-Wei Xue, and Kan Liao. “Plasmodesmata-like Intercellular Connections by Plant Remorin in Animal Cells.” BioRxiv, 2020. https://doi.org/10.1101/791137. ieee: Z. Wei et al., “Plasmodesmata-like intercellular connections by plant remorin in animal cells,” bioRxiv. 2020. ista: Wei Z, Tan S, Liu T, Wu Y, Lei J-G, Chen Z, Friml J, Xue H-W, Liao K. 2020. Plasmodesmata-like intercellular connections by plant remorin in animal cells. bioRxiv, 10.1101/791137. mla: Wei, Zhuang, et al. “Plasmodesmata-like Intercellular Connections by Plant Remorin in Animal Cells.” BioRxiv, 2020, doi:10.1101/791137. short: Z. Wei, S. Tan, T. Liu, Y. Wu, J.-G. Lei, Z. Chen, J. Friml, H.-W. Xue, K. Liao, BioRxiv (2020). das_tickbox: '1' date_created: 2020-03-21T16:34:42Z date_published: 2020-02-19T00:00:00Z date_updated: 2026-07-06T12:53:37Z day: '19' department: - _id: JiFr doi: 10.1101/791137 language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.1101/791137 month: '02' oa: 1 oa_version: Preprint page: '22' publication: bioRxiv publication_status: published status: public title: Plasmodesmata-like intercellular connections by plant remorin in animal cells type: preprint user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2020' ... --- _id: '8539' abstract: - lang: eng text: Cohomological and K-theoretic stable bases originated from the study of quantum cohomology and quantum K-theory. Restriction formula for cohomological stable bases played an important role in computing the quantum connection of cotangent bundle of partial flag varieties. In this paper we study the K-theoretic stable bases of cotangent bundles of flag varieties. We describe these bases in terms of the action of the affine Hecke algebra and the twisted group algebra of KostantKumar. Using this algebraic description and the method of root polynomials, we give a restriction formula of the stable bases. We apply it to obtain the restriction formula for partial flag varieties. We also build a relation between the stable basis and the Casselman basis in the principal series representations of the Langlands dual group. As an application, we give a closed formula for the transition matrix between Casselman basis and the characteristic functions. - lang: fre text: "Les bases stables cohomologiques et K-théoriques proviennent de l’étude de la cohomologie quantique et de la K-théorie quantique. La formule de restriction pour les bases stables cohomologiques a joué un rôle important dans le calcul de la connexion quantique du fibré cotangent de variétés de drapeaux partielles. Dans cet article, nous étudions les bases stables K-théoriques de fibré cotangents des variétés de drapeaux. Nous décrivons ces bases en fonction de l’action de l’algèbre de Hecke affine et de l’algèbre de Kostant-Kumar. En utilisant cette description algébrique et la méthode des polynômes de racine, nous donnons une formule de restriction des bases stables. Nous l’appliquons\r\npour obtenir la formule de restriction pour les variétés de drapeaux partielles. Nous construisons également une relation entre la base stable et la base de Casselman dans les représentations de la série principale du groupe dual de Langlands p-adique. Comme une application, nous donnons une formule close pour la matrice de transition entre la base de Casselman et les fonctions caractéristiques. " article_processing_charge: No article_type: original arxiv: 1 author: - first_name: C. full_name: Su, C. last_name: Su - first_name: Gufang full_name: Zhao, Gufang id: 2BC2AC5E-F248-11E8-B48F-1D18A9856A87 last_name: Zhao orcid: 0000-0001-7361-2882 - first_name: C. full_name: Zhong, C. last_name: Zhong citation: ama: Su C, Zhao G, Zhong C. On the K-theory stable bases of the springer resolution. Annales Scientifiques de l’Ecole Normale Superieure. 2020;53(3):663-671. doi:10.24033/asens.2431 apa: Su, C., Zhao, G., & Zhong, C. (2020). On the K-theory stable bases of the springer resolution. Annales Scientifiques de l’Ecole Normale Superieure. Societe Mathematique de France. https://doi.org/10.24033/asens.2431 chicago: Su, C., Gufang Zhao, and C. Zhong. “On the K-Theory Stable Bases of the Springer Resolution.” Annales Scientifiques de l’Ecole Normale Superieure. Societe Mathematique de France, 2020. https://doi.org/10.24033/asens.2431. ieee: C. Su, G. Zhao, and C. Zhong, “On the K-theory stable bases of the springer resolution,” Annales Scientifiques de l’Ecole Normale Superieure, vol. 53, no. 3. Societe Mathematique de France, pp. 663–671, 2020. ista: Su C, Zhao G, Zhong C. 2020. On the K-theory stable bases of the springer resolution. Annales Scientifiques de l’Ecole Normale Superieure. 53(3), 663–671. mla: Su, C., et al. “On the K-Theory Stable Bases of the Springer Resolution.” Annales Scientifiques de l’Ecole Normale Superieure, vol. 53, no. 3, Societe Mathematique de France, 2020, pp. 663–71, doi:10.24033/asens.2431. short: C. Su, G. Zhao, C. Zhong, Annales Scientifiques de l’Ecole Normale Superieure 53 (2020) 663–671. das_tickbox: '1' date_created: 2020-09-20T22:01:38Z date_published: 2020-06-01T00:00:00Z date_updated: 2026-07-06T13:57:35Z day: '01' department: - _id: TaHa doi: 10.24033/asens.2431 external_id: arxiv: - '1708.08013' isi: - '000592182600004' intvolume: ' 53' isi: 1 issue: '3' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1708.08013 month: '06' oa: 1 oa_version: Preprint page: 663-671 publication: Annales Scientifiques de l'Ecole Normale Superieure publication_identifier: issn: - 0012-9593 publication_status: published publisher: Societe Mathematique de France quality_controlled: '1' scopus_import: '1' status: public title: On the K-theory stable bases of the springer resolution type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 53 year: '2020' ... --- _id: '9781' abstract: - lang: eng text: We consider the Pekar functional on a ball in ℝ3. We prove uniqueness of minimizers, and a quadratic lower bound in terms of the distance to the minimizer. The latter follows from nondegeneracy of the Hessian at the minimum. acknowledgement: We are grateful for the hospitality at the Mittag-Leffler Institute, where part of this work has been done. The work of the authors was supported by the European Research Council (ERC)under the European Union's Horizon 2020 research and innovation programme grant 694227. article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Dario full_name: Feliciangeli, Dario id: 41A639AA-F248-11E8-B48F-1D18A9856A87 last_name: Feliciangeli orcid: 0000-0003-0754-8530 - first_name: Robert full_name: Seiringer, Robert id: 4AFD0470-F248-11E8-B48F-1D18A9856A87 last_name: Seiringer orcid: 0000-0002-6781-0521 citation: ama: Feliciangeli D, Seiringer R. Uniqueness and nondegeneracy of minimizers of the Pekar functional on a ball. SIAM Journal on Mathematical Analysis. 2020;52(1):605-622. doi:10.1137/19m126284x apa: Feliciangeli, D., & Seiringer, R. (2020). Uniqueness and nondegeneracy of minimizers of the Pekar functional on a ball. SIAM Journal on Mathematical Analysis. Society for Industrial and Applied Mathematics. https://doi.org/10.1137/19m126284x chicago: Feliciangeli, Dario, and Robert Seiringer. “Uniqueness and Nondegeneracy of Minimizers of the Pekar Functional on a Ball.” SIAM Journal on Mathematical Analysis. Society for Industrial and Applied Mathematics, 2020. https://doi.org/10.1137/19m126284x. ieee: D. Feliciangeli and R. Seiringer, “Uniqueness and nondegeneracy of minimizers of the Pekar functional on a ball,” SIAM Journal on Mathematical Analysis, vol. 52, no. 1. Society for Industrial and Applied Mathematics, pp. 605–622, 2020. ista: Feliciangeli D, Seiringer R. 2020. Uniqueness and nondegeneracy of minimizers of the Pekar functional on a ball. SIAM Journal on Mathematical Analysis. 52(1), 605–622. mla: Feliciangeli, Dario, and Robert Seiringer. “Uniqueness and Nondegeneracy of Minimizers of the Pekar Functional on a Ball.” SIAM Journal on Mathematical Analysis, vol. 52, no. 1, Society for Industrial and Applied Mathematics, 2020, pp. 605–22, doi:10.1137/19m126284x. short: D. Feliciangeli, R. Seiringer, SIAM Journal on Mathematical Analysis 52 (2020) 605–622. corr_author: '1' das_tickbox: '1' date_created: 2021-08-06T07:34:16Z date_published: 2020-02-12T00:00:00Z date_updated: 2026-07-06T14:02:25Z day: '12' ddc: - '510' department: - _id: RoSe doi: 10.1137/19m126284x ec_funded: 1 external_id: arxiv: - '1904.08647 ' isi: - '000546967700022' has_accepted_license: '1' intvolume: ' 52' isi: 1 issue: '1' keyword: - Applied Mathematics - Computational Mathematics - Analysis language: - iso: eng license: https://creativecommons.org/licenses/by-nc-nd/4.0/ main_file_link: - open_access: '1' url: https://arxiv.org/abs/1904.08647 month: '02' oa: 1 oa_version: Preprint page: 605-622 project: - _id: 25C6DC12-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '694227' name: Analysis of quantum many-body systems publication: SIAM Journal on Mathematical Analysis publication_identifier: eissn: - 1095-7154 issn: - 0036-1410 publication_status: published publisher: Society for Industrial and Applied Mathematics quality_controlled: '1' related_material: record: - id: '9733' relation: dissertation_contains status: public scopus_import: '1' status: public title: Uniqueness and nondegeneracy of minimizers of the Pekar functional on a ball tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 52 year: '2020' ... --- OA_place: publisher _id: '8958' abstract: - lang: eng text: "The oft-quoted dictum by Arthur Schawlow: ``A diatomic molecule has one atom too many'' has been disavowed. Inspired by the possibility to experimentally manipulate and enhance chemical reactivity in helium nanodroplets, we investigate the rotation of coupled cold molecules in the presence of a many-body environment.\r\nIn this thesis, we introduce new variational approaches to quantum impurities and apply them to the Fröhlich polaron - a quasiparticle formed out of an electron (or other point-like impurity) in a polar medium, and to the angulon - a quasiparticle formed out of a rotating molecule in a bosonic bath.\r\nWith this theoretical toolbox, we reveal the self-localization transition for the angulon quasiparticle. We show that, unlike for polarons, self-localization of angulons occurs at finite impurity-bath coupling already at the mean-field level. The transition is accompanied by the spherical-symmetry breaking of the angulon ground state and a discontinuity in the first derivative of the ground-state energy. Moreover, the type of symmetry breaking is dictated by the symmetry of the microscopic impurity-bath interaction, which leads to a number of distinct self-localized states. \r\nFor the system containing multiple impurities, by analogy with the bipolaron, we introduce the biangulon quasiparticle describing two rotating molecules that align with respect to each other due to the effective attractive interaction mediated by the excitations of the bath. We study this system from the strong-coupling regime to the weak molecule-bath interaction regime. We show that the molecules tend to have a strong alignment in the ground state, the biangulon shows shifted angulon instabilities and an additional spectral instability, where resonant angular momentum transfer between the molecules and the bath takes place. Finally, we introduce a diagonalization scheme that allows us to describe the transition from two separated angulons to a biangulon as a function of the distance between the two molecules." alternative_title: - ISTA Thesis article_processing_charge: No author: - first_name: Xiang full_name: Li, Xiang id: 4B7E523C-F248-11E8-B48F-1D18A9856A87 last_name: Li citation: ama: Li X. Rotation of coupled cold molecules in the presence of a many-body environment. 2020. doi:10.15479/AT:ISTA:8958 apa: Li, X. (2020). Rotation of coupled cold molecules in the presence of a many-body environment. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:8958 chicago: Li, Xiang. “Rotation of Coupled Cold Molecules in the Presence of a Many-Body Environment.” Institute of Science and Technology Austria, 2020. https://doi.org/10.15479/AT:ISTA:8958. ieee: X. Li, “Rotation of coupled cold molecules in the presence of a many-body environment,” Institute of Science and Technology Austria, 2020. ista: Li X. 2020. Rotation of coupled cold molecules in the presence of a many-body environment. Institute of Science and Technology Austria. mla: Li, Xiang. Rotation of Coupled Cold Molecules in the Presence of a Many-Body Environment. Institute of Science and Technology Austria, 2020, doi:10.15479/AT:ISTA:8958. short: X. Li, Rotation of Coupled Cold Molecules in the Presence of a Many-Body Environment, Institute of Science and Technology Austria, 2020. corr_author: '1' date_created: 2020-12-21T09:44:30Z date_published: 2020-12-21T00:00:00Z date_updated: 2026-07-07T05:31:09Z day: '21' ddc: - '539' degree_awarded: PhD department: - _id: MiLe doi: 10.15479/AT:ISTA:8958 ec_funded: 1 file: - access_level: open_access checksum: 3994c54a1241451d561db1d4f43bad30 content_type: application/pdf creator: xli date_created: 2020-12-22T10:55:56Z date_updated: 2020-12-22T10:55:56Z file_id: '8967' file_name: THESIS_Xiang_Li.pdf file_size: 3622305 relation: main_file success: 1 - access_level: closed checksum: 0954ecfc5554c05615c14de803341f00 content_type: application/x-zip-compressed creator: xli date_created: 2020-12-22T10:56:03Z date_updated: 2020-12-30T07:18:03Z file_id: '8968' file_name: THESIS_Xiang_Li.zip file_size: 4018859 relation: source_file file_date_updated: 2020-12-30T07:18:03Z has_accepted_license: '1' language: - iso: eng month: '12' oa: 1 oa_version: Published Version page: '125' project: - _id: 26031614-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P29902 name: Quantum rotations in the presence of a many-body environment - _id: 2688CF98-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '801770' name: 'Angulon: physics and applications of a new quasiparticle' publication_identifier: issn: - 2663-337X publication_status: published publisher: Institute of Science and Technology Austria related_material: record: - id: '8587' relation: part_of_dissertation status: public - id: '1120' relation: part_of_dissertation status: public - id: '5886' relation: part_of_dissertation status: public status: public supervisor: - first_name: Mikhail full_name: Lemeshko, Mikhail id: 37CB05FA-F248-11E8-B48F-1D18A9856A87 last_name: Lemeshko orcid: 0000-0002-6990-7802 title: Rotation of coupled cold molecules in the presence of a many-body environment type: dissertation user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd year: '2020' ... --- _id: '15074' abstract: - lang: eng text: We introduce a new graph problem, the token dropping game, and we show how to solve it efficiently in a distributed setting. We use the token dropping game as a tool to design an efficient distributed algorithm for the stable orientation problem, which is a special case of the more general locally optimal semi-matching problem. The prior work by Czygrinow et al. (DISC 2012) finds a locally optimal semi-matching in O(Δ⁵) rounds in graphs of maximum degree Δ, which directly implies an algorithm with the same runtime for stable orientations. We improve the runtime to O(Δ⁴) for stable orientations and prove a lower bound of Ω(Δ) rounds. alternative_title: - LIPIcs article_number: '40' article_processing_charge: No arxiv: 1 author: - first_name: Sebastian full_name: Brandt, Sebastian last_name: Brandt - first_name: Barbara full_name: Keller, Barbara last_name: Keller - first_name: Joel full_name: Rybicki, Joel id: 334EFD2E-F248-11E8-B48F-1D18A9856A87 last_name: Rybicki orcid: 0000-0002-6432-6646 - first_name: Jukka full_name: Suomela, Jukka last_name: Suomela - first_name: Jara full_name: Uitto, Jara last_name: Uitto citation: ama: 'Brandt S, Keller B, Rybicki J, Suomela J, Uitto J. Brief announcement: Efficient load-balancing through distributed token dropping. In: 34th International Symposium on Distributed Computing. Vol 179. Schloss Dagstuhl - Leibniz-Zentrum für Informatik; 2020. doi:10.4230/LIPIcs.DISC.2020.40' apa: 'Brandt, S., Keller, B., Rybicki, J., Suomela, J., & Uitto, J. (2020). Brief announcement: Efficient load-balancing through distributed token dropping. In 34th International Symposium on Distributed Computing (Vol. 179). Virtual: Schloss Dagstuhl - Leibniz-Zentrum für Informatik. https://doi.org/10.4230/LIPIcs.DISC.2020.40' chicago: 'Brandt, Sebastian, Barbara Keller, Joel Rybicki, Jukka Suomela, and Jara Uitto. “Brief Announcement: Efficient Load-Balancing through Distributed Token Dropping.” In 34th International Symposium on Distributed Computing, Vol. 179. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2020. https://doi.org/10.4230/LIPIcs.DISC.2020.40.' ieee: 'S. Brandt, B. Keller, J. Rybicki, J. Suomela, and J. Uitto, “Brief announcement: Efficient load-balancing through distributed token dropping,” in 34th International Symposium on Distributed Computing, Virtual, 2020, vol. 179.' ista: 'Brandt S, Keller B, Rybicki J, Suomela J, Uitto J. 2020. Brief announcement: Efficient load-balancing through distributed token dropping. 34th International Symposium on Distributed Computing. DISC: Symposium on Distributed Computing, LIPIcs, vol. 179, 40.' mla: 'Brandt, Sebastian, et al. “Brief Announcement: Efficient Load-Balancing through Distributed Token Dropping.” 34th International Symposium on Distributed Computing, vol. 179, 40, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2020, doi:10.4230/LIPIcs.DISC.2020.40.' short: S. Brandt, B. Keller, J. Rybicki, J. Suomela, J. Uitto, in:, 34th International Symposium on Distributed Computing, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2020. conference: end_date: 2020-10-16 location: Virtual name: 'DISC: Symposium on Distributed Computing' start_date: 2020-10-12 corr_author: '1' date_created: 2024-03-05T07:09:12Z date_published: 2020-10-07T00:00:00Z date_updated: 2026-07-07T06:21:32Z day: '07' ddc: - '000' department: - _id: DaAl doi: 10.4230/LIPIcs.DISC.2020.40 external_id: arxiv: - '2005.07761' file: - access_level: open_access checksum: 23e2d9321aef53092dc1e24a8ab82d72 content_type: application/pdf creator: dernst date_created: 2024-03-05T07:08:27Z date_updated: 2024-03-05T07:08:27Z file_id: '15075' file_name: 2020_LIPIcs_Brandt.pdf file_size: 303529 relation: main_file success: 1 file_date_updated: 2024-03-05T07:08:27Z has_accepted_license: '1' intvolume: ' 179' language: - iso: eng license: https://creativecommons.org/licenses/by/3.0/ month: '10' oa: 1 oa_version: Published Version publication: 34th International Symposium on Distributed Computing publication_status: published publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik quality_controlled: '1' related_material: record: - id: '9678' relation: later_version status: public scopus_import: '1' status: public title: 'Brief announcement: Efficient load-balancing through distributed token dropping' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/3.0/legalcode name: Creative Commons Attribution 3.0 Unported (CC BY 3.0) short: CC BY (3.0) type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 179 year: '2020' ... --- _id: '9415' abstract: - lang: eng text: 'Optimizing convolutional neural networks for fast inference has recently become an extremely active area of research. One of the go-to solutions in this context is weight pruning, which aims to reduce computational and memory footprint by removing large subsets of the connections in a neural network. Surprisingly, much less attention has been given to exploiting sparsity in the activation maps, which tend to be naturally sparse in many settings thanks to the structure of rectified linear (ReLU) activation functions. In this paper, we present an in-depth analysis of methods for maximizing the sparsity of the activations in a trained neural network, and show that, when coupled with an efficient sparse-input convolution algorithm, we can leverage this sparsity for significant performance gains. To induce highly sparse activation maps without accuracy loss, we introduce a new regularization technique, coupled with a new threshold-based sparsification method based on a parameterized activation function called Forced-Activation-Threshold Rectified Linear Unit (FATReLU). We examine the impact of our methods on popular image classification models, showing that most architectures can adapt to significantly sparser activation maps without any accuracy loss. Our second contribution is showing that these these compression gains can be translated into inference speedups: we provide a new algorithm to enable fast convolution operations over networks with sparse activations, and show that it can enable significant speedups for end-to-end inference on a range of popular models on the large-scale ImageNet image classification task on modern Intel CPUs, with little or no retraining cost. ' article_processing_charge: No author: - first_name: Mark full_name: Kurtz, Mark last_name: Kurtz - first_name: Justin full_name: Kopinsky, Justin last_name: Kopinsky - first_name: Rati full_name: Gelashvili, Rati last_name: Gelashvili - first_name: Alexander full_name: Matveev, Alexander last_name: Matveev - first_name: John full_name: Carr, John last_name: Carr - first_name: Michael full_name: Goin, Michael last_name: Goin - first_name: William full_name: Leiserson, William last_name: Leiserson - first_name: Sage full_name: Moore, Sage last_name: Moore - first_name: Bill full_name: Nell, Bill last_name: Nell - first_name: Nir full_name: Shavit, Nir last_name: Shavit - first_name: Dan-Adrian full_name: Alistarh, Dan-Adrian id: 4A899BFC-F248-11E8-B48F-1D18A9856A87 last_name: Alistarh orcid: 0000-0003-3650-940X citation: ama: 'Kurtz M, Kopinsky J, Gelashvili R, et al. Inducing and exploiting activation sparsity for fast neural network inference. In: 37th International Conference on Machine Learning. Vol 119. ; 2020:5533-5543.' apa: Kurtz, M., Kopinsky, J., Gelashvili, R., Matveev, A., Carr, J., Goin, M., … Alistarh, D.-A. (2020). Inducing and exploiting activation sparsity for fast neural network inference. In 37th International Conference on Machine Learning (Vol. 119, pp. 5533–5543). Online. chicago: Kurtz, Mark, Justin Kopinsky, Rati Gelashvili, Alexander Matveev, John Carr, Michael Goin, William Leiserson, et al. “Inducing and Exploiting Activation Sparsity for Fast Neural Network Inference.” In 37th International Conference on Machine Learning, 119:5533–43, 2020. ieee: M. Kurtz et al., “Inducing and exploiting activation sparsity for fast neural network inference,” in 37th International Conference on Machine Learning, Online, 2020, vol. 119, pp. 5533–5543. ista: 'Kurtz M, Kopinsky J, Gelashvili R, Matveev A, Carr J, Goin M, Leiserson W, Moore S, Nell B, Shavit N, Alistarh D-A. 2020. Inducing and exploiting activation sparsity for fast neural network inference. 37th International Conference on Machine Learning. ICML: International Conference on Machine Learning vol. 119, 5533–5543.' mla: Kurtz, Mark, et al. “Inducing and Exploiting Activation Sparsity for Fast Neural Network Inference.” 37th International Conference on Machine Learning, vol. 119, 2020, pp. 5533–43. short: M. Kurtz, J. Kopinsky, R. Gelashvili, A. Matveev, J. Carr, M. Goin, W. Leiserson, S. Moore, B. Nell, N. Shavit, D.-A. Alistarh, in:, 37th International Conference on Machine Learning, 2020, pp. 5533–5543. conference: end_date: 2020-07-18 location: Online name: 'ICML: International Conference on Machine Learning' start_date: 2020-07-12 das_tickbox: '1' date_created: 2021-05-23T22:01:45Z date_published: 2020-07-12T00:00:00Z date_updated: 2026-07-07T13:42:32Z day: '12' ddc: - '000' department: - _id: DaAl file: - access_level: open_access checksum: 2aaaa7d7226e49161311d91627cf783b content_type: application/pdf creator: kschuh date_created: 2021-05-25T09:51:36Z date_updated: 2021-05-25T09:51:36Z file_id: '9421' file_name: 2020_PMLR_Kurtz.pdf file_size: 741899 relation: main_file success: 1 file_date_updated: 2021-05-25T09:51:36Z has_accepted_license: '1' intvolume: ' 119' language: - iso: eng month: '07' oa: 1 oa_version: Published Version page: 5533-5543 publication: 37th International Conference on Machine Learning publication_identifier: issn: - 2640-3498 quality_controlled: '1' scopus_import: '1' status: public title: Inducing and exploiting activation sparsity for fast neural network inference type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 119 year: '2020' ... --- _id: '8285' abstract: - lang: eng text: We demonstrate the utility of optical cavity generated spin-squeezed states in free space atomic fountain clocks in ensembles of 390 000 87Rb atoms. Fluorescence imaging, correlated to an initial quantum nondemolition measurement, is used for population spectroscopy after the atoms are released from a confining lattice. For a free fall time of 4 milliseconds, we resolve a single-shot phase sensitivity of 814(61) microradians, which is 5.8(0.6) decibels (dB) below the quantum projection limit. We observe that this squeezing is preserved as the cloud expands to a roughly 200  μm radius and falls roughly 300  μm in free space. Ramsey spectroscopy with 240 000 atoms at a 3.6 ms Ramsey time results in a single-shot fractional frequency stability of 8.4(0.2)×10−12, 3.8(0.2) dB below the quantum projection limit. The sensitivity and stability are limited by the technical noise in the fluorescence detection protocol and the microwave system, respectively. acknowledgement: This work is supported by the Office of Naval Research (N00014-16-1-2927- A00003), Vannevar Bush Faculty Fellowship (N00014-16-1-2812- P00005), Department of Energy (DE-SC0019174- 0001), and Defense Threat Reduction Agency (HDTRA1-15-1-0017- P00005). article_number: '043202' article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Benjamin K. full_name: Malia, Benjamin K. last_name: Malia - first_name: Julián full_name: Martínez-Rincón, Julián last_name: Martínez-Rincón - first_name: Yunfan full_name: Wu, Yunfan last_name: Wu - first_name: Onur full_name: Hosten, Onur id: 4C02D85E-F248-11E8-B48F-1D18A9856A87 last_name: Hosten orcid: 0000-0002-2031-204X - first_name: Mark A. full_name: Kasevich, Mark A. last_name: Kasevich citation: ama: Malia BK, Martínez-Rincón J, Wu Y, Hosten O, Kasevich MA. Free space Ramsey spectroscopy in rubidium with noise below the quantum projection limit. Physical Review Letters. 2020;125(4). doi:10.1103/PhysRevLett.125.043202 apa: Malia, B. K., Martínez-Rincón, J., Wu, Y., Hosten, O., & Kasevich, M. A. (2020). Free space Ramsey spectroscopy in rubidium with noise below the quantum projection limit. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.125.043202 chicago: Malia, Benjamin K., Julián Martínez-Rincón, Yunfan Wu, Onur Hosten, and Mark A. Kasevich. “Free Space Ramsey Spectroscopy in Rubidium with Noise below the Quantum Projection Limit.” Physical Review Letters. American Physical Society, 2020. https://doi.org/10.1103/PhysRevLett.125.043202. ieee: B. K. Malia, J. Martínez-Rincón, Y. Wu, O. Hosten, and M. A. Kasevich, “Free space Ramsey spectroscopy in rubidium with noise below the quantum projection limit,” Physical Review Letters, vol. 125, no. 4. American Physical Society, 2020. ista: Malia BK, Martínez-Rincón J, Wu Y, Hosten O, Kasevich MA. 2020. Free space Ramsey spectroscopy in rubidium with noise below the quantum projection limit. Physical Review Letters. 125(4), 043202. mla: Malia, Benjamin K., et al. “Free Space Ramsey Spectroscopy in Rubidium with Noise below the Quantum Projection Limit.” Physical Review Letters, vol. 125, no. 4, 043202, American Physical Society, 2020, doi:10.1103/PhysRevLett.125.043202. short: B.K. Malia, J. Martínez-Rincón, Y. Wu, O. Hosten, M.A. Kasevich, Physical Review Letters 125 (2020). das_tickbox: '0' date_created: 2020-08-24T06:24:04Z date_published: 2020-07-24T00:00:00Z date_updated: 2026-07-08T08:56:44Z day: '24' department: - _id: OnHo doi: 10.1103/PhysRevLett.125.043202 external_id: arxiv: - '1912.10218' isi: - '000552227400008' pmid: - '32794788' intvolume: ' 125' isi: 1 issue: '4' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1912.10218 month: '07' 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' researchdata_availability: no scopus_import: '1' status: public supplementarymaterial: yes title: Free space Ramsey spectroscopy in rubidium with noise below the quantum projection limit type: journal_article user_id: 68b8ca59-c5b3-11ee-8790-cd641c68093d volume: 125 year: '2020' ... --- _id: '8319' abstract: - lang: eng text: We demonstrate that releasing atoms into free space from an optical lattice does not deteriorate cavity-generated spin squeezing for metrological purposes. In this work, an ensemble of 500000 spin-squeezed atoms in a high-finesse optical cavity with near-uniform atom-cavity coupling is prepared, released into free space, recaptured in the cavity, and probed. Up to ∼10 dB of metrologically relevant squeezing is retrieved for 700μs free-fall times, and decaying levels of squeezing are realized for up to 3 ms free-fall times. The degradation of squeezing results from loss of atom-cavity coupling homogeneity between the initial squeezed state generation and final collective state readout. A theoretical model is developed to quantify this degradation and this model is experimentally validated. acknowledgement: We thank N. Engelsen for comments on the manuscript. This work was supported by the Office of Naval Research, Vannevar Bush Faculty Fellowship, Department of Energy, and Defense Threat Reduction Agency. R.K. was partly supported by the AQT/INQNET program at Caltech. article_number: '012224' article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Yunfan full_name: Wu, Yunfan last_name: Wu - first_name: Rajiv full_name: Krishnakumar, Rajiv last_name: Krishnakumar - first_name: Julián full_name: Martínez-Rincón, Julián last_name: Martínez-Rincón - first_name: Benjamin K. full_name: Malia, Benjamin K. last_name: Malia - first_name: Onur full_name: Hosten, Onur id: 4C02D85E-F248-11E8-B48F-1D18A9856A87 last_name: Hosten orcid: 0000-0002-2031-204X - first_name: Mark A. full_name: Kasevich, Mark A. last_name: Kasevich citation: ama: Wu Y, Krishnakumar R, Martínez-Rincón J, Malia BK, Hosten O, Kasevich MA. Retrieval of cavity-generated atomic spin squeezing after free-space release. Physical Review A. 2020;102(1). doi:10.1103/PhysRevA.102.012224 apa: Wu, Y., Krishnakumar, R., Martínez-Rincón, J., Malia, B. K., Hosten, O., & Kasevich, M. A. (2020). Retrieval of cavity-generated atomic spin squeezing after free-space release. Physical Review A. American Physical Society. https://doi.org/10.1103/PhysRevA.102.012224 chicago: Wu, Yunfan, Rajiv Krishnakumar, Julián Martínez-Rincón, Benjamin K. Malia, Onur Hosten, and Mark A. Kasevich. “Retrieval of Cavity-Generated Atomic Spin Squeezing after Free-Space Release.” Physical Review A. American Physical Society, 2020. https://doi.org/10.1103/PhysRevA.102.012224. ieee: Y. Wu, R. Krishnakumar, J. Martínez-Rincón, B. K. Malia, O. Hosten, and M. A. Kasevich, “Retrieval of cavity-generated atomic spin squeezing after free-space release,” Physical Review A, vol. 102, no. 1. American Physical Society, 2020. ista: Wu Y, Krishnakumar R, Martínez-Rincón J, Malia BK, Hosten O, Kasevich MA. 2020. Retrieval of cavity-generated atomic spin squeezing after free-space release. Physical Review A. 102(1), 012224. mla: Wu, Yunfan, et al. “Retrieval of Cavity-Generated Atomic Spin Squeezing after Free-Space Release.” Physical Review A, vol. 102, no. 1, 012224, American Physical Society, 2020, doi:10.1103/PhysRevA.102.012224. short: Y. Wu, R. Krishnakumar, J. Martínez-Rincón, B.K. Malia, O. Hosten, M.A. Kasevich, Physical Review A 102 (2020). das_tickbox: '0' date_created: 2020-08-30T22:01:10Z date_published: 2020-07-30T00:00:00Z date_updated: 2026-07-08T08:59:02Z day: '30' department: - _id: OnHo doi: 10.1103/PhysRevA.102.012224 external_id: arxiv: - '1912.08334' isi: - '000555104200011' intvolume: ' 102' isi: 1 issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1912.08334 month: '07' oa: 1 oa_version: Preprint publication: Physical Review A publication_identifier: eissn: - 2469-9934 issn: - 2469-9926 publication_status: published publisher: American Physical Society quality_controlled: '1' researchdata_availability: no scopus_import: '1' status: public supplementarymaterial: no title: Retrieval of cavity-generated atomic spin squeezing after free-space release type: journal_article user_id: 68b8ca59-c5b3-11ee-8790-cd641c68093d volume: 102 year: '2020' ... --- _id: '8127' abstract: - lang: eng text: Mechanistic modeling in neuroscience aims to explain observed phenomena in terms of underlying causes. However, determining which model parameters agree with complex and stochastic neural data presents a significant challenge. We address this challenge with a machine learning tool which uses deep neural density estimators—trained using model simulations—to carry out Bayesian inference and retrieve the full space of parameters compatible with raw data or selected data features. Our method is scalable in parameters and data features and can rapidly analyze new data after initial training. We demonstrate the power and flexibility of our approach on receptive fields, ion channels, and Hodgkin–Huxley models. We also characterize the space of circuit configurations giving rise to rhythmic activity in the crustacean stomatogastric ganglion, and use these results to derive hypotheses for underlying compensation mechanisms. Our approach will help close the gap between data-driven and theory-driven models of neural dynamics. acknowledgement: We thank Mahmood S Hoseini and Michael Stryker for sharing their data for Figure 2, and Philipp Berens, Sean Bittner, Jan Boelts, John Cunningham, Richard Gao, Scott Linderman, Eve Marder, Iain Murray, George Papamakarios, Astrid Prinz, Auguste Schulz and Srinivas Turaga for discussions and/or comments on the manuscript. This work was supported by the German Research Foundation (DFG) through SFB 1233 ‘Robust Vision’, (276693517), SFB 1089 ‘Synaptic Microcircuits’, SPP 2041 ‘Computational Connectomics’ and Germany's Excellence Strategy – EXC-Number 2064/1 – Project number 390727645 and the German Federal Ministry of Education and Research (BMBF, project ‘ADIMEM’, FKZ 01IS18052 A-D) to JHM, a Sir Henry Dale Fellowship by the Wellcome Trust and the Royal Society (WT100000; WFP and TPV), a Wellcome Trust Senior Research Fellowship (214316/Z/18/Z; TPV), a ERC Consolidator Grant (SYNAPSEEK; WPF and CC), and a UK Research and Innovation, Biotechnology and Biological Sciences Research Council (CC, UKRI-BBSRC BB/N019512/1). We gratefully acknowledge the Leibniz Supercomputing Centre for funding this project by providing computing time on its Linux-Cluster. article_number: e56261 article_processing_charge: No article_type: original author: - first_name: Pedro J. full_name: Gonçalves, Pedro J. last_name: Gonçalves orcid: 0000-0002-6987-4836 - first_name: Jan-Matthis full_name: Lueckmann, Jan-Matthis last_name: Lueckmann orcid: 0000-0003-4320-4663 - first_name: Michael full_name: Deistler, Michael last_name: Deistler orcid: 0000-0002-3573-0404 - first_name: Marcel full_name: Nonnenmacher, Marcel last_name: Nonnenmacher orcid: 0000-0001-6044-6627 - first_name: Kaan full_name: Öcal, Kaan last_name: Öcal orcid: 0000-0002-8528-6858 - first_name: Giacomo full_name: Bassetto, Giacomo last_name: Bassetto - first_name: Chaitanya full_name: Chintaluri, Chaitanya id: BA06AFEE-A4BA-11EA-AE5C-14673DDC885E last_name: Chintaluri orcid: 0000-0003-4252-1608 - first_name: William F. full_name: Podlaski, William F. last_name: Podlaski orcid: 0000-0001-6619-7502 - first_name: Sara A. full_name: Haddad, Sara A. last_name: Haddad orcid: 0000-0003-0807-0823 - first_name: Tim P full_name: Vogels, Tim P id: CB6FF8D2-008F-11EA-8E08-2637E6697425 last_name: Vogels orcid: 0000-0003-3295-6181 - first_name: David S. full_name: Greenberg, David S. last_name: Greenberg - first_name: Jakob H. full_name: Macke, Jakob H. last_name: Macke orcid: 0000-0001-5154-8912 citation: ama: Gonçalves PJ, Lueckmann J-M, Deistler M, et al. Training deep neural density estimators to identify mechanistic models of neural dynamics. eLife. 2020;9. doi:10.7554/eLife.56261 apa: Gonçalves, P. J., Lueckmann, J.-M., Deistler, M., Nonnenmacher, M., Öcal, K., Bassetto, G., … Macke, J. H. (2020). Training deep neural density estimators to identify mechanistic models of neural dynamics. ELife. eLife Sciences Publications. https://doi.org/10.7554/eLife.56261 chicago: Gonçalves, Pedro J., Jan-Matthis Lueckmann, Michael Deistler, Marcel Nonnenmacher, Kaan Öcal, Giacomo Bassetto, Chaitanya Chintaluri, et al. “Training Deep Neural Density Estimators to Identify Mechanistic Models of Neural Dynamics.” ELife. eLife Sciences Publications, 2020. https://doi.org/10.7554/eLife.56261. ieee: P. J. Gonçalves et al., “Training deep neural density estimators to identify mechanistic models of neural dynamics,” eLife, vol. 9. eLife Sciences Publications, 2020. ista: Gonçalves PJ, Lueckmann J-M, Deistler M, Nonnenmacher M, Öcal K, Bassetto G, Chintaluri C, Podlaski WF, Haddad SA, Vogels TP, Greenberg DS, Macke JH. 2020. Training deep neural density estimators to identify mechanistic models of neural dynamics. eLife. 9, e56261. mla: Gonçalves, Pedro J., et al. “Training Deep Neural Density Estimators to Identify Mechanistic Models of Neural Dynamics.” ELife, vol. 9, e56261, eLife Sciences Publications, 2020, doi:10.7554/eLife.56261. short: P.J. Gonçalves, J.-M. Lueckmann, M. Deistler, M. Nonnenmacher, K. Öcal, G. Bassetto, C. Chintaluri, W.F. Podlaski, S.A. Haddad, T.P. Vogels, D.S. Greenberg, J.H. Macke, ELife 9 (2020). das_tickbox: '1' date_created: 2020-07-16T12:26:04Z date_published: 2020-09-17T00:00:00Z date_updated: 2026-07-13T12:31:21Z day: '17' ddc: - '570' department: - _id: TiVo doi: 10.7554/eLife.56261 ec_funded: 1 external_id: isi: - '000584989400001' pmid: - '32940606' file: - access_level: open_access checksum: c4300ddcd93ed03fc9c6cdf1f77890be content_type: application/pdf creator: cziletti date_created: 2020-10-27T11:37:32Z date_updated: 2020-10-27T11:37:32Z file_id: '8709' file_name: 2020_eLife_Gonçalves.pdf file_size: 17355867 relation: main_file success: 1 file_date_updated: 2020-10-27T11:37:32Z has_accepted_license: '1' intvolume: ' 9' isi: 1 language: - iso: eng license: https://creativecommons.org/licenses/by/4.0/ month: '09' oa: 1 oa_version: Published Version pmid: 1 project: - _id: 0aacfa84-070f-11eb-9043-d7eb2c709234 call_identifier: H2020 grant_number: '819603' name: Learning the shape of synaptic plasticity rules for neuronal architectures and function through machine learning. publication: eLife publication_identifier: eissn: - 2050-084X publication_status: published publisher: eLife Sciences Publications quality_controlled: '1' scopus_import: '1' status: public title: Training deep neural density estimators to identify mechanistic models of neural dynamics 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: 9 year: '2020' ... --- OA_place: repository OA_type: green _id: '22166' abstract: - lang: eng text: We introduce a graph Ramsey game called Ramsey, Paper,Scissors. This game has two players, Proposer and Decider.Starting from an empty graph on n vertices, on each turnProposer proposes a potential edge and Decider simultane-ously decides (without knowing Proposer’s choice) whether toadd it to the graph. Proposer cannot propose an edge whichwould create a triangle in the graph. The game ends whenProposer has no legal moves remaining, and Proposer wins ifthe final graph has independence number at least s. We provea threshold phenomenon exists for this game by exhibitingrandomized strategies for both players that are optimal up toconstants. Namely, there exist constants 0 < A < B such that(under optimal play) Proposer wins with high probability ifs < A√n log n, while Decider wins with high probability ifs > B√n log n. This is a factor of Θ(√log n)) larger than thelower bound coming from the off-diagonal Ramsey numberr(3, s). article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Jacob full_name: Fox, Jacob last_name: Fox - first_name: Xiaoyu full_name: He, Xiaoyu last_name: He - first_name: Yuval full_name: Wigderson, Yuval id: 2d0023a0-1567-11f0-833d-d5c1e476d4b5 last_name: Wigderson citation: ama: Fox J, He X, Wigderson Y. Ramsey, Paper, Scissors. Random Structures & Algorithms. 2020;57(4):1157-1173. doi:10.1002/rsa.20950 apa: Fox, J., He, X., & Wigderson, Y. (2020). Ramsey, Paper, Scissors. Random Structures & Algorithms. Wiley. https://doi.org/10.1002/rsa.20950 chicago: Fox, Jacob, Xiaoyu He, and Yuval Wigderson. “Ramsey, Paper, Scissors.” Random Structures & Algorithms. Wiley, 2020. https://doi.org/10.1002/rsa.20950. ieee: J. Fox, X. He, and Y. Wigderson, “Ramsey, Paper, Scissors,” Random Structures & Algorithms, vol. 57, no. 4. Wiley, pp. 1157–1173, 2020. ista: Fox J, He X, Wigderson Y. 2020. Ramsey, Paper, Scissors. Random Structures & Algorithms. 57(4), 1157–1173. mla: Fox, Jacob, et al. “Ramsey, Paper, Scissors.” Random Structures & Algorithms, vol. 57, no. 4, Wiley, 2020, pp. 1157–73, doi:10.1002/rsa.20950. short: J. Fox, X. He, Y. Wigderson, Random Structures & Algorithms 57 (2020) 1157–1173. date_created: 2026-06-29T10:54:10Z date_published: 2020-12-01T00:00:00Z date_updated: 2026-07-14T08:31:05Z day: '01' doi: 10.1002/rsa.20950 extern: '1' external_id: arxiv: - '1906.01092' intvolume: ' 57' issue: '4' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.1906.01092 month: '12' oa: 1 oa_version: Preprint page: 1157-1173 publication: Random Structures & Algorithms publication_identifier: eissn: - 1098-2418 issn: - 1042-9832 publication_status: published publisher: Wiley quality_controlled: '1' scopus_import: '1' status: public title: Ramsey, Paper, Scissors type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 57 year: '2020' ... --- OA_place: repository OA_type: green _id: '22182' abstract: - lang: eng text: We present a short new proof of the canonical polynomial van der Waerden theorem, recently established by Girão. article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Jacob full_name: Fox, Jacob last_name: Fox - first_name: Yuval full_name: Wigderson, Yuval id: 2d0023a0-1567-11f0-833d-d5c1e476d4b5 last_name: Wigderson - first_name: Yufei full_name: Zhao, Yufei last_name: Zhao citation: ama: Fox J, Wigderson Y, Zhao Y. A short proof of the canonical polynomial van der Waerden theorem. Comptes Rendus Mathématique. 2020;358(8):957-959. doi:10.5802/crmath.101 apa: Fox, J., Wigderson, Y., & Zhao, Y. (2020). A short proof of the canonical polynomial van der Waerden theorem. Comptes Rendus Mathématique. Académie des Sciences. https://doi.org/10.5802/crmath.101 chicago: Fox, Jacob, Yuval Wigderson, and Yufei Zhao. “A Short Proof of the Canonical Polynomial van Der Waerden Theorem.” Comptes Rendus Mathématique. Académie des Sciences, 2020. https://doi.org/10.5802/crmath.101. ieee: J. Fox, Y. Wigderson, and Y. Zhao, “A short proof of the canonical polynomial van der Waerden theorem,” Comptes Rendus Mathématique, vol. 358, no. 8. Académie des Sciences, pp. 957–959, 2020. ista: Fox J, Wigderson Y, Zhao Y. 2020. A short proof of the canonical polynomial van der Waerden theorem. Comptes Rendus Mathématique. 358(8), 957–959. mla: Fox, Jacob, et al. “A Short Proof of the Canonical Polynomial van Der Waerden Theorem.” Comptes Rendus Mathématique, vol. 358, no. 8, Académie des Sciences, 2020, pp. 957–59, doi:10.5802/crmath.101. short: J. Fox, Y. Wigderson, Y. Zhao, Comptes Rendus Mathématique 358 (2020) 957–959. date_created: 2026-06-29T11:00:09Z date_published: 2020-12-03T00:00:00Z date_updated: 2026-07-14T09:19:20Z day: '03' doi: 10.5802/crmath.101 extern: '1' external_id: arxiv: - '2005.04135' intvolume: ' 358' issue: '8' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.2005.04135 mathsc: - 05D10 - 11B30 month: '12' oa: 1 oa_version: Preprint page: 957-959 publication: Comptes Rendus Mathématique publication_identifier: eissn: - 1778-3569 issn: - 1631-073X publication_status: published publisher: Académie des Sciences quality_controlled: '1' scopus_import: '1' status: public title: A short proof of the canonical polynomial van der Waerden theorem type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 358 year: '2020' ... --- OA_place: repository OA_type: green _id: '22185' abstract: - lang: eng text: "A weakly optimal Ks-free (n,d,λ)-graph is ad-regular Ks-free graph on n vertices with d= Θ(n1−α) and spectral expansion λ= Θ(n1−(s−1)α), for some fixed α >0. \ Such a graph is called optimal if additionally α=12s−3. We prove that if s1,...,sk>3 are fixed positive integers and weakly optimal Ksi-free pseudorandom graphs exist for each 1The Electronic Journal of Combinatorics. 2020;27(1). doi:10.37236/9071 apa: He, X., & Wigderson, Y. (2020). Multicolor Ramsey numbers via pseudorandom graphs. The Electronic Journal of Combinatorics. The Electronic Journal of Combinatorics. https://doi.org/10.37236/9071 chicago: He, Xiaoyu, and Yuval Wigderson. “Multicolor Ramsey Numbers via Pseudorandom Graphs.” The Electronic Journal of Combinatorics. The Electronic Journal of Combinatorics, 2020. https://doi.org/10.37236/9071. ieee: X. He and Y. Wigderson, “Multicolor Ramsey numbers via pseudorandom graphs,” The Electronic Journal of Combinatorics, vol. 27, no. 1. The Electronic Journal of Combinatorics, 2020. ista: He X, Wigderson Y. 2020. Multicolor Ramsey numbers via pseudorandom graphs. The Electronic Journal of Combinatorics. 27(1), P1.32. mla: He, Xiaoyu, and Yuval Wigderson. “Multicolor Ramsey Numbers via Pseudorandom Graphs.” The Electronic Journal of Combinatorics, vol. 27, no. 1, P1.32, The Electronic Journal of Combinatorics, 2020, doi:10.37236/9071. short: X. He, Y. Wigderson, The Electronic Journal of Combinatorics 27 (2020). date_created: 2026-06-29T12:06:14Z date_published: 2020-02-01T00:00:00Z date_updated: 2026-07-14T09:42:53Z day: '01' doi: 10.37236/9071 extern: '1' external_id: arxiv: - '1910.06287' intvolume: ' 27' issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.1910.06287 mathsc: - 05C55 - 05D10 month: '02' oa: 1 oa_version: Preprint publication: The Electronic Journal of Combinatorics publication_identifier: eissn: - 1077-8926 publication_status: published publisher: The Electronic Journal of Combinatorics quality_controlled: '1' scopus_import: '1' status: public title: Multicolor Ramsey numbers via pseudorandom graphs type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 27 year: '2020' ... --- OA_place: repository OA_type: green _id: '22153' abstract: - lang: eng text: "A weakly optimal Ks-free (n,d,λ)-graph is a d-regular Ks-free graph on n vertices with d=Θ(n1−α) and spectral expansion λ=Θ(n1−(s−1)α), for some fixed α>0. Such a graph is called optimal if additionally α=12s−3. We prove that if s1,…,sk≥3 are fixed positive integers and weakly optimal Ksi-free pseudorandom graphs exist for each 1≤i≤k, then the multicolor Ramsey numbers satisfy\r\nΩ(tS+1log2St)≤r(s1,…,sk,t)≤O(tS+1logSt),\r\nas t→∞, where S=∑ki=1(si−2). This generalizes previous results of Mubayi and Verstraëte, who proved the case k=1, and Alon and Rödl, who proved the case s1=⋯=sk=3. Both previous results used the existence of optimal rather than weakly optimal Ksi-free graphs." article_number: P1.32 article_processing_charge: No article_type: original arxiv: 1 author: - first_name: Xiaoyu full_name: He, Xiaoyu last_name: He - first_name: Yuval full_name: Wigderson, Yuval id: 2d0023a0-1567-11f0-833d-d5c1e476d4b5 last_name: Wigderson citation: ama: He X, Wigderson Y. Multicolor Ramsey numbers via pseudorandom graphs. The Electronic Journal of Combinatorics. 2020;27(1). doi:10.37236/9071 apa: He, X., & Wigderson, Y. (2020). Multicolor Ramsey numbers via pseudorandom graphs. The Electronic Journal of Combinatorics. The Electronic Journal of Combinatorics. https://doi.org/10.37236/9071 chicago: He, Xiaoyu, and Yuval Wigderson. “Multicolor Ramsey Numbers via Pseudorandom Graphs.” The Electronic Journal of Combinatorics. The Electronic Journal of Combinatorics, 2020. https://doi.org/10.37236/9071. ieee: X. He and Y. Wigderson, “Multicolor Ramsey numbers via pseudorandom graphs,” The Electronic Journal of Combinatorics, vol. 27, no. 1. The Electronic Journal of Combinatorics, 2020. ista: He X, Wigderson Y. 2020. Multicolor Ramsey numbers via pseudorandom graphs. The Electronic Journal of Combinatorics. 27(1), P1.32. mla: He, Xiaoyu, and Yuval Wigderson. “Multicolor Ramsey Numbers via Pseudorandom Graphs.” The Electronic Journal of Combinatorics, vol. 27, no. 1, P1.32, The Electronic Journal of Combinatorics, 2020, doi:10.37236/9071. short: X. He, Y. Wigderson, The Electronic Journal of Combinatorics 27 (2020). das_tickbox: '1' date_created: 2026-06-29T10:47:47Z date_published: 2020-02-07T00:00:00Z date_updated: 2026-07-14T09:55:01Z day: '07' doi: 10.37236/9071 extern: '1' external_id: arxiv: - '1910.06287' intvolume: ' 27' issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.1910.06287 month: '02' oa: 1 oa_version: Preprint publication: The Electronic Journal of Combinatorics publication_identifier: issn: - 1077-8926 publication_status: published publisher: The Electronic Journal of Combinatorics quality_controlled: '1' scopus_import: '1' status: public title: Multicolor Ramsey numbers via pseudorandom graphs type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 27 year: '2020' ... --- OA_type: closed access _id: '22216' abstract: - lang: eng text: Understanding the impact of curvature on the self-assembly of elongated microscopic building blocks, such as molecules and proteins, is key to engineering functional materials with predesigned structure. We develop model “banana-shaped” colloidal particles with tunable dimensions and curvature, whose structure and dynamics are accessible at the particle level. By heating initially straight rods made of SU-8 photoresist, we induce a controllable shape deformation that causes the rods to buckle into banana-shaped particles. We elucidate the phase behavior of differently curved colloidal bananas using confocal microscopy. Although highly curved bananas only form isotropic phases, less curved bananas exhibit very rich phase behavior, including biaxial nematic phases, polar and antipolar smectic-like phases, and even the long-predicted, elusive splay-bend nematic phase. article_processing_charge: No article_type: original author: - first_name: Carla full_name: Fernández-Rico, Carla id: 492def71-6250-11f0-b278-d41dbd241b62 last_name: Fernández-Rico - first_name: Massimiliano full_name: Chiappini, Massimiliano last_name: Chiappini - first_name: Taiki full_name: Yanagishima, Taiki last_name: Yanagishima - first_name: Heidi full_name: de Sousa, Heidi last_name: de Sousa - first_name: Dirk G. A. L. full_name: Aarts, Dirk G. A. L. last_name: Aarts - first_name: Marjolein full_name: Dijkstra, Marjolein last_name: Dijkstra - first_name: Roel P. A. full_name: Dullens, Roel P. A. last_name: Dullens citation: ama: Fernández-Rico C, Chiappini M, Yanagishima T, et al. Shaping colloidal bananas to reveal biaxial, splay-bend nematic, and smectic phases. Science. 2020;369(6506):950-955. doi:10.1126/science.abb4536 apa: Fernández-Rico, C., Chiappini, M., Yanagishima, T., de Sousa, H., Aarts, D. G. A. L., Dijkstra, M., & Dullens, R. P. A. (2020). Shaping colloidal bananas to reveal biaxial, splay-bend nematic, and smectic phases. Science. American Association for the Advancement of Science. https://doi.org/10.1126/science.abb4536 chicago: Fernández-Rico, Carla, Massimiliano Chiappini, Taiki Yanagishima, Heidi de Sousa, Dirk G. A. L. Aarts, Marjolein Dijkstra, and Roel P. A. Dullens. “Shaping Colloidal Bananas to Reveal Biaxial, Splay-Bend Nematic, and Smectic Phases.” Science. American Association for the Advancement of Science, 2020. https://doi.org/10.1126/science.abb4536. ieee: C. Fernández-Rico et al., “Shaping colloidal bananas to reveal biaxial, splay-bend nematic, and smectic phases,” Science, vol. 369, no. 6506. American Association for the Advancement of Science, pp. 950–955, 2020. ista: Fernández-Rico C, Chiappini M, Yanagishima T, de Sousa H, Aarts DGAL, Dijkstra M, Dullens RPA. 2020. Shaping colloidal bananas to reveal biaxial, splay-bend nematic, and smectic phases. Science. 369(6506), 950–955. mla: Fernández-Rico, Carla, et al. “Shaping Colloidal Bananas to Reveal Biaxial, Splay-Bend Nematic, and Smectic Phases.” Science, vol. 369, no. 6506, American Association for the Advancement of Science, 2020, pp. 950–55, doi:10.1126/science.abb4536. short: C. Fernández-Rico, M. Chiappini, T. Yanagishima, H. de Sousa, D.G.A.L. Aarts, M. Dijkstra, R.P.A. Dullens, Science 369 (2020) 950–955. date_created: 2026-06-30T06:33:29Z date_published: 2020-08-21T00:00:00Z date_updated: 2026-07-15T07:45:41Z day: '21' doi: 10.1126/science.abb4536 extern: '1' external_id: pmid: - '32820121' intvolume: ' 369' issue: '6506' language: - iso: eng month: '08' oa_version: None page: 950-955 pmid: 1 publication: Science publication_identifier: eissn: - 1095-9203 issn: - 0036-8075 publication_status: published publisher: American Association for the Advancement of Science quality_controlled: '1' scopus_import: '1' status: public title: Shaping colloidal bananas to reveal biaxial, splay-bend nematic, and smectic phases type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 369 year: '2020' ... --- OA_type: green _id: '7467' abstract: - lang: eng text: Nanomaterials produced from the bottom-up assembly of nanocrystals may incorporate ∼1020–1021 cm–3 not fully coordinated surface atoms, i.e., ∼1020–1021 cm–3 potential donor or acceptor states that can strongly affect transport properties. Therefore, to exploit the full potential of nanocrystal building blocks to produce functional nanomaterials and thin films, a proper control of their surface chemistry is required. Here, we analyze how the ligand stripping procedure influences the charge and heat transport properties of sintered PbSe nanomaterials produced from the bottom-up assembly of colloidal PbSe nanocrystals. First, we show that the removal of the native organic ligands by thermal decomposition in an inert atmosphere leaves relatively large amounts of carbon at the crystal interfaces. This carbon blocks crystal growth during consolidation and at the same time hampers charge and heat transport through the final nanomaterial. Second, we demonstrate that, by stripping ligands from the nanocrystal surface before consolidation, nanomaterials with larger crystal domains, lower porosity, and higher charge carrier concentrations are obtained, thus resulting in nanomaterials with higher electrical and thermal conductivities. In addition, the ligand displacement leaves the nanocrystal surface unprotected, facilitating oxidation and chalcogen evaporation. The influence of the ligand displacement on the nanomaterial charge transport properties is rationalized here using a two-band model based on the standard Boltzmann transport equation with the relaxation time approximation. Finally, we present an application of the produced functional nanomaterials by modeling, fabricating, and testing a simple PbSe-based thermoelectric device with a ring geometry. acknowledgement: This work was supported by the Spanish Ministerio de Economía y Competitividad through the project SEHTOP (ENE2016-77798-C4-3-R) and the Generalitat de Catalunya through the project 2017SGR1246. D.C. acknowledges support from Universidad Nacional de Colombia. Y.L. acknowledges funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement no. 754411. M.I. acknowledges financial support from IST Austria. article_processing_charge: No article_type: original author: - first_name: Doris full_name: Cadavid, Doris last_name: Cadavid - first_name: Silvia full_name: Ortega, Silvia last_name: Ortega - first_name: Sergio full_name: Illera, Sergio last_name: Illera - first_name: Yu full_name: Liu, Yu id: 2A70014E-F248-11E8-B48F-1D18A9856A87 last_name: Liu orcid: 0000-0001-7313-6740 - first_name: Maria full_name: Ibáñez, Maria id: 43C61214-F248-11E8-B48F-1D18A9856A87 last_name: Ibáñez orcid: 0000-0001-5013-2843 - first_name: Alexey full_name: Shavel, Alexey last_name: Shavel - first_name: Yu full_name: Zhang, Yu last_name: Zhang - first_name: Mengyao full_name: Li, Mengyao last_name: Li - first_name: Antonio M. full_name: López, Antonio M. last_name: López - first_name: Germán full_name: Noriega, Germán last_name: Noriega - first_name: Oscar Juan full_name: Durá, Oscar Juan last_name: Durá - first_name: M. A. full_name: López De La Torre, M. A. last_name: López De La Torre - first_name: Joan Daniel full_name: Prades, Joan Daniel last_name: Prades - first_name: Andreu full_name: Cabot, Andreu last_name: Cabot citation: ama: Cadavid D, Ortega S, Illera S, et al. Influence of the ligand stripping on the transport properties of nanoparticle-based PbSe nanomaterials. ACS Applied Energy Materials. 2020;3(3):2120-2129. doi:10.1021/acsaem.9b02137 apa: Cadavid, D., Ortega, S., Illera, S., Liu, Y., Ibáñez, M., Shavel, A., … Cabot, A. (2020). Influence of the ligand stripping on the transport properties of nanoparticle-based PbSe nanomaterials. ACS Applied Energy Materials. American Chemical Society. https://doi.org/10.1021/acsaem.9b02137 chicago: Cadavid, Doris, Silvia Ortega, Sergio Illera, Yu Liu, Maria Ibáñez, Alexey Shavel, Yu Zhang, et al. “Influence of the Ligand Stripping on the Transport Properties of Nanoparticle-Based PbSe Nanomaterials.” ACS Applied Energy Materials. American Chemical Society, 2020. https://doi.org/10.1021/acsaem.9b02137. ieee: D. Cadavid et al., “Influence of the ligand stripping on the transport properties of nanoparticle-based PbSe nanomaterials,” ACS Applied Energy Materials, vol. 3, no. 3. American Chemical Society, pp. 2120–2129, 2020. ista: Cadavid D, Ortega S, Illera S, Liu Y, Ibáñez M, Shavel A, Zhang Y, Li M, López AM, Noriega G, Durá OJ, López De La Torre MA, Prades JD, Cabot A. 2020. Influence of the ligand stripping on the transport properties of nanoparticle-based PbSe nanomaterials. ACS Applied Energy Materials. 3(3), 2120–2129. mla: Cadavid, Doris, et al. “Influence of the Ligand Stripping on the Transport Properties of Nanoparticle-Based PbSe Nanomaterials.” ACS Applied Energy Materials, vol. 3, no. 3, American Chemical Society, 2020, pp. 2120–29, doi:10.1021/acsaem.9b02137. short: D. Cadavid, S. Ortega, S. Illera, Y. Liu, M. Ibáñez, A. Shavel, Y. Zhang, M. Li, A.M. López, G. Noriega, O.J. Durá, M.A. López De La Torre, J.D. Prades, A. Cabot, ACS Applied Energy Materials 3 (2020) 2120–2129. date_created: 2020-02-09T23:00:52Z date_published: 2020-03-01T00:00:00Z date_updated: 2026-07-28T12:54:00Z day: '01' ddc: - '540' department: - _id: MaIb doi: 10.1021/acsaem.9b02137 ec_funded: 1 external_id: isi: - '000526598300012' file: - access_level: open_access checksum: f23be731a766a480c77c962c1380315c content_type: application/pdf creator: dernst date_created: 2022-08-23T08:34:17Z date_updated: 2022-08-23T08:34:17Z file_id: '11942' file_name: 2020_ACSAppliedEnergyMat_Cadavid.pdf file_size: 6423548 relation: main_file success: 1 file_date_updated: 2022-08-23T08:34:17Z has_accepted_license: '1' intvolume: ' 3' isi: 1 issue: '3' language: - iso: eng month: '03' oa: 1 oa_version: Accepted Version page: 2120-2129 project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: ACS Applied Energy Materials publication_identifier: eissn: - 2574-0962 publication_status: published publisher: American Chemical Society quality_controlled: '1' scopus_import: '1' status: public title: Influence of the ligand stripping on the transport properties of nanoparticle-based PbSe nanomaterials type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 3 year: '2020' ... --- OA_place: publisher _id: '8589' abstract: - lang: eng text: The plant hormone auxin plays indispensable roles in plant growth and development. An essential level of regulation in auxin action is the directional auxin transport within cells. The establishment of auxin gradient in plant tissue has been attributed to local auxin biosynthesis and directional intercellular auxin transport, which both are controlled by various environmental and developmental signals. It is well established that asymmetric auxin distribution in cells is achieved by polarly localized PIN-FORMED (PIN) auxin efflux transporters. Despite the initial insights into cellular mechanisms of PIN polarization obtained from the last decades, the molecular mechanism and specific regulators mediating PIN polarization remains elusive. In this thesis, we aim to find novel players in PIN subcellular polarity regulation during Arabidopsis development. We first characterize the physiological effect of piperonylic acid (PA) on Arabidopsis hypocotyl gravitropic bending and PIN polarization. Secondly, we reveal the importance of SCFTIR1/AFB auxin signaling pathway in shoot gravitropism bending termination. In addition, we also explore the role of myosin XI complex, and actin cytoskeleton in auxin feedback regulation on PIN polarity. In Chapter 1, we give an overview of the current knowledge about PIN-mediated auxin fluxes in various plant tropic responses. In Chapter 2, we study the physiological effect of PA on shoot gravitropic bending. Our results show that PA treatment inhibits auxin-mediated PIN3 repolarization by interfering with PINOID and PIN3 phosphorylation status, ultimately leading to hyperbending hypocotyls. In Chapter 3, we provide evidence to show that the SCFTIR1/AFB nuclear auxin signaling pathway is crucial and required for auxin-mediated PIN3 repolarization and shoot gravitropic bending termination. In Chapter 4, we perform a phosphoproteomics approach and identify the motor protein Myosin XI and its binding protein, the MadB2 family, as an essential regulator of PIN polarity for auxin-canalization related developmental processes. In Chapter 5, we demonstrate the vital role of actin cytoskeleton in auxin feedback on PIN polarity by regulating PIN subcellular trafficking. Overall, the data presented in this PhD thesis brings novel insights into the PIN polar localization regulation that resulted in the (re)establishment of the polar auxin flow and gradient in response to environmental stimuli during plant development. acknowledged_ssus: - _id: Bio - _id: LifeSc acknowledgement: I also want to thank the China Scholarship Council for supporting my study during the year from 2015 to 2019. I also want to thank IST facilities – the Bioimaging facility, the media kitchen, the plant facility and all of the campus services, for their support. alternative_title: - ISTA Thesis article_processing_charge: No author: - first_name: Huibin full_name: Han, Huibin id: 31435098-F248-11E8-B48F-1D18A9856A87 last_name: Han citation: ama: Han H. Novel insights into PIN polarity regulation during Arabidopsis development. 2020. doi:10.15479/AT:ISTA:8589 apa: Han, H. (2020). Novel insights into PIN polarity regulation during Arabidopsis development. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:8589 chicago: Han, Huibin. “Novel Insights into PIN Polarity Regulation during Arabidopsis Development.” Institute of Science and Technology Austria, 2020. https://doi.org/10.15479/AT:ISTA:8589. ieee: H. Han, “Novel insights into PIN polarity regulation during Arabidopsis development,” Institute of Science and Technology Austria, 2020. ista: Han H. 2020. Novel insights into PIN polarity regulation during Arabidopsis development. Institute of Science and Technology Austria. mla: Han, Huibin. Novel Insights into PIN Polarity Regulation during Arabidopsis Development. Institute of Science and Technology Austria, 2020, doi:10.15479/AT:ISTA:8589. short: H. Han, Novel Insights into PIN Polarity Regulation during Arabidopsis Development, Institute of Science and Technology Austria, 2020. corr_author: '1' date_created: 2020-09-30T14:50:51Z date_published: 2020-09-30T00:00:00Z date_updated: 2026-07-28T12:51:58Z day: '30' ddc: - '580' degree_awarded: PhD department: - _id: JiFr doi: 10.15479/AT:ISTA:8589 file: - access_level: closed checksum: c4bda1947d4c09c428ac9ce667b02327 content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document creator: dernst date_created: 2020-09-30T14:50:20Z date_updated: 2020-09-30T14:50:20Z file_id: '8590' file_name: 2020_Han_Thesis.docx file_size: 49198118 relation: source_file - access_level: open_access checksum: 3f4f5d1718c2230adf30639ecaf8a00b content_type: application/pdf creator: dernst date_created: 2020-09-30T14:49:59Z date_updated: 2021-10-01T13:33:02Z file_id: '8591' file_name: 2020_Han_Thesis.pdf file_size: 15513963 relation: main_file file_date_updated: 2021-10-01T13:33:02Z has_accepted_license: '1' language: - iso: eng month: '09' oa: 1 oa_version: Published Version page: '164' publication_identifier: issn: - 2663-337X publication_status: published publisher: Institute of Science and Technology Austria related_material: record: - id: '7643' relation: part_of_dissertation status: public status: public supervisor: - first_name: Jiří full_name: Friml, Jiří id: 4159519E-F248-11E8-B48F-1D18A9856A87 last_name: Friml orcid: 0000-0002-8302-7596 title: Novel insights into PIN polarity regulation during Arabidopsis development type: dissertation user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd year: '2020' ... --- OA_place: repository OA_type: green _id: '8322' abstract: - lang: eng text: "Reverse firewalls were introduced at Eurocrypt 2015 by Miro-nov and Stephens-Davidowitz, as a method for protecting cryptographic protocols against attacks on the devices of the honest parties. In a nutshell: a reverse firewall is placed outside of a device and its goal is to “sanitize” the messages sent by it, in such a way that a malicious device cannot leak its secrets to the outside world. It is typically assumed that the cryptographic devices are attacked in a “functionality-preserving way” (i.e. informally speaking, the functionality of the protocol remains unchanged under this attacks). In their paper, Mironov and Stephens-Davidowitz construct a protocol for passively-secure two-party computations with firewalls, leaving extension of this result to stronger models as an open question.\r\nIn this paper, we address this problem by constructing a protocol for secure computation with firewalls that has two main advantages over the original protocol from Eurocrypt 2015. Firstly, it is a multiparty computation protocol (i.e. it works for an arbitrary number n of the parties, and not just for 2). Secondly, it is secure in much stronger corruption settings, namely in the active corruption model. More precisely: we consider an adversary that can fully corrupt up to \U0001D45B−1 parties, while the remaining parties are corrupt in a functionality-preserving way.\r\nOur core techniques are: malleable commitments and malleable non-interactive zero-knowledge, which in particular allow us to create a novel protocol for multiparty augmented coin-tossing into the well with reverse firewalls (that is based on a protocol of Lindell from Crypto 2001)." acknowledgement: We would like to thank the anonymous reviewers for their helpful comments and suggestions. The work was initiated while the first author was in IIT Madras, India. Part of this work was done while the author was visiting the University of Warsaw. This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (682815 - TOCNeT) and from the Foundation for Polish Science under grant TEAM/2016-1/4 founded within the UE 2014–2020 Smart Growth Operational Program. The last author was supported by the Independent Research Fund Denmark project BETHE and the Concordium Blockchain Research Center, Aarhus University, Denmark. alternative_title: - LNCS article_processing_charge: No author: - first_name: Suvradip full_name: Chakraborty, Suvradip id: B9CD0494-D033-11E9-B219-A439E6697425 last_name: Chakraborty - first_name: Stefan full_name: Dziembowski, Stefan last_name: Dziembowski - first_name: Jesper Buus full_name: Nielsen, Jesper Buus last_name: Nielsen citation: ama: 'Chakraborty S, Dziembowski S, Nielsen JB. Reverse firewalls for actively secure MPCs. In: Advances in Cryptology – CRYPTO 2020. Vol 12171. Springer Nature; 2020:732-762. doi:10.1007/978-3-030-56880-1_26' apa: 'Chakraborty, S., Dziembowski, S., & Nielsen, J. B. (2020). Reverse firewalls for actively secure MPCs. In Advances in Cryptology – CRYPTO 2020 (Vol. 12171, pp. 732–762). Santa Barbara, CA, United States: Springer Nature. https://doi.org/10.1007/978-3-030-56880-1_26' chicago: Chakraborty, Suvradip, Stefan Dziembowski, and Jesper Buus Nielsen. “Reverse Firewalls for Actively Secure MPCs.” In Advances in Cryptology – CRYPTO 2020, 12171:732–62. Springer Nature, 2020. https://doi.org/10.1007/978-3-030-56880-1_26. ieee: S. Chakraborty, S. Dziembowski, and J. B. Nielsen, “Reverse firewalls for actively secure MPCs,” in Advances in Cryptology – CRYPTO 2020, Santa Barbara, CA, United States, 2020, vol. 12171, pp. 732–762. ista: 'Chakraborty S, Dziembowski S, Nielsen JB. 2020. Reverse firewalls for actively secure MPCs. Advances in Cryptology – CRYPTO 2020. CRYPTO: Annual International Cryptology Conference, LNCS, vol. 12171, 732–762.' mla: Chakraborty, Suvradip, et al. “Reverse Firewalls for Actively Secure MPCs.” Advances in Cryptology – CRYPTO 2020, vol. 12171, Springer Nature, 2020, pp. 732–62, doi:10.1007/978-3-030-56880-1_26. short: S. Chakraborty, S. Dziembowski, J.B. Nielsen, in:, Advances in Cryptology – CRYPTO 2020, Springer Nature, 2020, pp. 732–762. conference: end_date: 2020-08-21 location: Santa Barbara, CA, United States name: 'CRYPTO: Annual International Cryptology Conference' start_date: 2020-08-17 cryptoeprintid: 1 date_created: 2020-08-30T22:01:12Z date_published: 2020-08-10T00:00:00Z date_updated: 2026-07-28T12:45:44Z day: '10' department: - _id: KrPi doi: 10.1007/978-3-030-56880-1_26 ec_funded: 1 external_id: cryptoeprintid: - 2019/1317 isi: - '001415325700026' intvolume: ' 12171' isi: 1 language: - iso: eng main_file_link: - open_access: '1' url: https://eprint.iacr.org/2019/1317 month: '08' oa: 1 oa_version: Preprint page: 732-762 project: - _id: 258AA5B2-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '682815' name: Teaching Old Crypto New Tricks publication: Advances in Cryptology – CRYPTO 2020 publication_identifier: eissn: - 1611-3349 isbn: - '9783030568795' issn: - 0302-9743 publication_status: published publisher: Springer Nature quality_controlled: '1' scopus_import: '1' status: public title: Reverse firewalls for actively secure MPCs type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 12171 year: '2020' ...