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检索条件"机构=Physics Department and Program in Applied and Computational Mathematics"
3220 条 记 录,以下是891-900 订阅
Interplay between breathing-mode distortions and magnetic order in rare-earth nickelates from ab initio magnetic models
arXiv
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arXiv 2021年
作者: Badrtdinov, Danis I. Hampel, Alexander Dreyer, Cyrus E. Theoretical Physics and Applied Mathematics Department Ural Federal University Yekaterinburg620002 Russia Center for Computational Quantum Physics Flatiron Institute 162 Fifth avenue New YorkNY10010 United States Department of Physics and Astronomy Stony Brook University Stony BrookNY11794-3800 United States
We use density-functional theory calculations to explore the magnetic properties of perovskite rare-earth nickelates, RNiO3, by constructing microscopic magnetic models containing all relevant exchange interactions vi... 详细信息
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Kinetic Frustration Effects on Dense Two-Dimensional Packings of Convex Particles and Their Structural Characteristics
arXiv
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arXiv 2021年
作者: Maher, Charles Emmett Stillinger, Frank H. Torquato, Salvatore Department of Chemistry Princeton University PrincetonNJ08544 United States Department of Physics Princeton University PrincetonNJ08544 United States Princeton Institute for the Science and Technology of Materials Princeton University PrincetonNJ08544 United States Program in Applied and Computational Mathematics Princeton University PrincetonNJ08544 United States
The study of hard-particle packings is of fundamental importance in physics, chemistry, cell biology, and discrete geometry. Much of the previous work on hard-particle packings concerns their densest possible arrangem... 详细信息
来源: 评论
Dynamic Mode Decomposition for Extrapolating Non-equilibrium Green’s Functions Dynamics
arXiv
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arXiv 2022年
作者: Reeves, Cian C. Yin, Jia Zhu, Yuanran Ibrahim, Khaled Z. Yang, Chao Vlček, Vojtěch Department of Physics University of California Santa Barbara Santa BarbaraCA93117 United States Applied Mathematics and Computational Research Division Lawrence Berkeley National Laboratory BerkeleyCA94720 United States Department of Chemistry and Biochemistry University of California Santa Barbara Santa BarbaraCA93117 United States Department of Materials University of California Santa BarbaraCA93117 United States
The HF-GKBA offers an approximate numerical procedure for propagating the two-time nonequilibrium Green’s function(NEGF). Here, using the GW self-energy, we compare the HF-GKBA to exact results for a variety of syste... 详细信息
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Characterization of void space, large-scale structure, and transport properties of maximally random jammed packings of superballs
arXiv
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arXiv 2021年
作者: Maher, Charles Emmett Stillinger, Frank H. Torquato, Salvatore Department of Chemistry Princeton University PrincetonNJ08544 United States Department of Physics Princeton University PrincetonNJ08544 United States Princeton Institute for the Science and Technology of Materials Princeton University PrincetonNJ08544 United States Program in Applied and Computational Mathematics Princeton University PrincetonNJ08544 United States
Dense, disordered packings of particles are useful models of low-temperature amorphous phases of matter, biological systems, granular media, and colloidal systems. The study of dense packings of nonspherical particles... 详细信息
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Hair is complicated: Gravitational waves from stable and unstable boson-star mergers
arXiv
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arXiv 2024年
作者: Ge, Bo-Xuan Lim, Eugene A. Sperhake, Ulrich Evstafyeva, Tamara Cors, Daniela de Jong, Eloy Croft, Robin Helfer, Thomas Theoretical Particle Physics and Cosmology Group Physics Department Kings College London Strand LondonWC2R 2LS United Kingdom Centre for Theoretical Cosmology Department of Applied Mathematics and Theoretical Physics University of Cambridge Wilberforce Road CambridgeCB3 0WA United Kingdom Department of Physics and Astronomy Johns Hopkins University 3400 North Charles Street BaltimoreMD21218 United States TAPIR 350-17 Caltech 1200 E. California Boulevard PasadenaCA91125 United States Perimeter Institute for Theoretical Physics WaterlooONN2L 2Y5 Canada Dipartimento di Fisica Sapienza Università di Roma Piazzale Aldo Moro 5 Roma00185 Italy Institute for Advanced Computational Science Stony Brook University Stony BrookNY11794 United States
We explore the gravitational-wave emission from head-on collisions of equal-mass solitonic boson-star binaries from simulations spanning a two-dimensional parameter space, consisting of the central scalar-field amplit... 详细信息
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A Nodal Immersed Finite Element-Finite Difference Method
SSRN
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SSRN 2022年
作者: Wells, David Vadala-Roth, Ben Lee, Jae Ho Griffith, Boyce E. Department of Mathematics University of North Carolina Chapel HillNC United States U.S. Army Corps of Engineers Engineer Research and Development Center Coastal and Hydraulic Laboratory VicksburgMS United States Department of Mechanical Engineering Institute for Computational Medicine Johns Hopkins University BaltimoreMD United States Departments of Mathematics Applied Physical Sciences and Biomedical Engineering University of North Carolina Chapel HillNC United States Carolina Center for Interdisciplinary Applied Mathematics University of North Carolina Chapel HillNC United States Computational Medicine Program University of North Carolina Chapel HillNC United States McAllister Heart Institute University of North Carolina Chapel HillNC United States
The immersed finite element-finite difference (IFED) method is a computational approach to modeling interactions between a fluid and an immersed structure. The IFED method uses a finite element (FE) method to approxim... 详细信息
来源: 评论
Doubly-stochastic normalization of the Gaussian kernel is robust to heteroskedastic noise
arXiv
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arXiv 2020年
作者: Landa, Boris Coifman, Ronald R. Kluger, Yuval Program in Applied Mathematics Yale University Interdepartmental Program in Computational Biology and Bioinformatics Yale University Department of Pathology Yale University School of Medicine
A fundamental step in many data-analysis techniques is the construction of an affinity matrix describing similarities between data points. When the data points reside in Euclidean space, a widespread approach is to fr... 详细信息
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Corrigendum to “Trace preserving quantum dynamics using a novel reparametrization-neutral summation-by-parts difference operator” [***. 425 (2021) 109917]
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Journal of computational physics 2024年 519卷
作者: Oskar Ålund Yukinao Akamatsu Fredrik Laurén Takahiro Miura Jan Nordström Alexander Rothkopf Department of Mathematics Computational Mathematics Linköping University SE-581 83 Linköping Sweden Department of Physics Osaka University Toyonaka Osaka 560-0043 Japan Department of Mathematics and Applied Mathematics University of Johannesburg P.O. Box 524 Auckland Park 2006 South Africa Faculty of Science and Technology University of Stavanger 4021 Stavanger Norway
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On the Parameter Combinations that Matter and on Those that do Not
arXiv
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arXiv 2021年
作者: Evangelou, Nikolaos Wichrowski, Noah J. Kevrekidis, George A. Dietrich, Felix Kooshkbaghi, Mahdi McFann, Sarah Kevrekidis, Ioannis G. Department of Chemical and Biomolecular Engineering Johns Hopkins University United States Department of Applied Mathematics and Statistics Johns Hopkins University United States Department of Mathematics and Statistics University of Massachusetts Amherst United States Department of Informatics Technical University of Munich Germany The Program in Applied and Computational Mathematics Princeton University United States Department of Chemical and Biological Engineering Princeton University United States Lewis-Sigler Institute for Integrative Genomics Princeton University United States
We present a data-driven approach to characterizing nonidentifiability of a model’s parameters and illustrate it through dynamic as well as steady kinetic models. By employing Diffusion Maps and their extensions, we ... 详细信息
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Covariant cosmography: the observer-dependence of the Hubble parameter
arXiv
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arXiv 2023年
作者: Maartens, Roy Santiago, Jessica Clarkson, Chris Kalbouneh, Basheer Marinoni, Christian Department of Physics & Astronomy University of the Western Cape Cape Town7535 South Africa Institute of Cosmology & Gravitation University of Portsmouth PortsmouthPO1 3FX United Kingdom National Institute for Theoretical & Computational Sciences Cape Town7535 South Africa Leung Center for Cosmology & Particle Astrophysics National Taiwan University Taipei10617 Taiwan Section of Astrophysics Astronomy & Mechanics Department of Physics Aristotle University of Thessaloniki Thessaloniki54124 Greece School of Physics & Astronomy Queen Mary University of London LondonE1 4NS United Kingdom Department of Mathematics & Applied Mathematics University of Cape Town Cape Town7701 South Africa Aix Marseille Univ Université de Toulon CNRS CPT Marseille France
The disagreement between low- and high-redshift measurements of the Hubble parameter is emerging as a serious challenge to the standard model of cosmology. We develop a covariant cosmographic analysis of the Hubble pa... 详细信息
来源: 评论