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检索条件"机构=Physics Department and Program in Applied and Computational Mathematics"
3218 条 记 录,以下是571-580 订阅
排序:
Classical and Quantum Phase Transitions in Multiscale Media: Universality and Critical Exponents in the Fractional Ising Model
arXiv
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arXiv 2025年
作者: Lewis, Joshua M. Carr, Lincoln D. Quantum Engineering Program Colorado School of Mines 1523 Illinois St. GoldenCO80401 United States Department of Physics Colorado School of Mines 1523 Illinois St. GoldenCO80401 United States Department of Applied Mathematics and Statistics Colorado School of Mines 1523 Illinois St. GoldenCO80401 United States
Until now multiscale quantum problems have appeared to be out of reach at the many-body level relevant to strongly correlated materials and current quantum information devices. In fact, they can be modeled with q-th o... 详细信息
来源: 评论
LINSCAN - A Linearity Based Clustering Algorithm
arXiv
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arXiv 2024年
作者: Dennehy, Andrew Zou, Xiaoyu Semnani, Shabnam J. Fialko, Yuri Cloninger, Alexander Committee on Computational and Applied Mathematics University of Chicago ChicagoIL United States Institute of Geophysics and Planetary Physics Scripps Institution of Oceanography University of California La Jolla San DiegoCA92093 United States Department of Structural Engineering University of California La Jolla San DiegoCA92093 United States Department of Mathematics Halcioglu Data Science Institute University of California La Jolla San DiegoCA92093 United States
DBSCAN and OPTICS are powerful algorithms for identifying clusters of points in domains where few assumptions can be made about the structure of the data. In this paper, we leverage these strengths and introduce a new... 详细信息
来源: 评论
在天文学中基于机器学习的流体力学问题加速求解
在天文学中基于机器学习的流体力学问题加速求解
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第十三届全国流体力学学术会议
作者: 毛顺元 董若冰 王炜琦 Kwang Moo Yi 陆路 王思凡 Paris Perdikaris Department of Physics and Astronomy University of Victoria Department of Computer Science University of British Columbia Department of Statistics and Data Science Yale University Graduate Group in Applied Mathematics and Computational Science University of Pennsylvania Department ofMechanical Engineering and Applied Mechanics University of Pennsylvania
探索行星形成的过程不仅揭示了地球及其生命的起源,还为寻找地外生命提供了关键线索。行星在原行星盘中形成。原行星盘是由气体和尘埃构成的扁平盘状系统,围绕在新生恒星的周围,其跨度可达数千亿公里。近年来,通过分析行星对原行星盘的... 详细信息
来源: 评论
Good plasmons in a bad metal
arXiv
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arXiv 2024年
作者: Ruta, Francesco L. Shao, Yinming Acharya, Swagata Mu, Anqi Jo, Na Hyun Ryu, Sae Hee Balatsky, Daria Pashov, Dimitar Kim, Brian S.Y. Katsnelson, Mikhail I. Analytis, James G. Rotenberg, Eli Millis, Andrew J. van Schilfgaarde, Mark Basov, D.N. Department of Physics Columbia University New York United States Department of Applied Physics and Applied Mathematics Columbia University New York United States National Renewable Energy Laboratory GoldenCO United States Advanced Light Source E.O. Lawrence Berkeley National Laboratory BerkeleyCA United States Department of Chemistry University of California BerkeleyCA United States Department of Physics University of California BerkeleyCA United States Theory and Simulation of Condensed Matter King’s College London London United Kingdom Department of Mechanical Engineering Columbia University New York United States Institute for Molecules and Materials Radboud University Nijmegen Netherlands Center for Computational Quantum Physics Flatiron Institute New York United States
Correlated materials may exhibit unusually high resistivity increasing linearly in temperature (1), breaking through the Mott-Ioffe-Regel bound, above which coherent quasiparticles are destroyed (2). The fate of colle... 详细信息
来源: 评论
Multiple scales analysis of a nonlinear timestepping instability in simulations of solitons
arXiv
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arXiv 2024年
作者: Hyatt, Benjamin A. Lecoanet, Daniel Anders, Evan H. Burns, Keaton J. Department of Engineering Sciences and Applied Mathematics Northwestern University EvanstonIL60208 United States Center for Interdisciplinary Exploration and Research in Astrophysics Northwestern University EvanstonIL60201 United States Kavli Institute for Theoretical Physics University of California Santa Barbara Santa BarbaraCA93106 United States Department of Mathematics Massachusetts Institute of Technology CambridgeMA02139 United States Center for Computational Astrophysics Flatiron Institute New YorkNY10010 United States
The susceptibility of timestepping algorithms to numerical instabilities is an important consideration when simulating partial differential equations (PDEs). Here we identify and analyze a pernicious numerical instabi... 详细信息
来源: 评论
Quantum embedding methods for correlated excited states of point defects: Case studies and challenges
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Physical Review B 2022年 第23期105卷 235104-235104页
作者: Lukas Muechler Danis I. Badrtdinov Alexander Hampel Jennifer Cano Malte Rösner Cyrus E. Dreyer Center for Computational Quantum Physics Flatiron Institute 162 5th Avenue New York New York 10010 USA Theoretical Physics and Applied Mathematics Department Ural Federal University 620002 Yekaterinburg Russia Department of Physics and Astronomy Stony Brook University Stony Brook New York 11794-3800 USA Institute for Molecules and Materials Radboud University Heijendaalseweg 135 6525 AJ Nijmegen Netherlands
A quantitative description of the excited electronic states of point defects and impurities is crucial for understanding materials properties, and possible applications of defects in quantum technologies. This is a co... 详细信息
来源: 评论
Magnetic octupole moment of Yb173 using collinear laser spectroscopy
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Physical Review A 2021年 第3期103卷 032826-032826页
作者: R. P. de Groote S. Kujanpää Á. Koszorús J. G. Li I. D. Moore Department of Physics University of Jyväskylä PB 35(YFL) FIN-40351 Jyväskylä Finland Department of Physics University of Liverpool Liverpool L69 7ZE United Kingdom Institute of Applied Physics and Computational Mathematics Beijing 100088 China
The hyperfine constants of the 4f146s6pP2o3 state in neutral Yb have been measured using three different dipole transitions. This state was recently shown to have a comparatively large hyperfine magnetic octupole spli... 详细信息
来源: 评论
A self-induced mechanism of large-scale helical structures in compressible turbulent flows
arXiv
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arXiv 2024年
作者: Yan, Zheng Wang, Jianchun Wang, Lifeng Lei, Zhu Wu, Junfeng Duan, Junyi Tong, Fulin Li, Xinliang Yu, Changping Institute of Applied Physics and Computational Mathematics Beijing100094 China Department of Mechanics and Aerospace Engineering Southern University of Science and Technology Guangdong Shenzhen518055 China Center for Applied Physics and Technology HEDPS Peking University Beijing100871 China LHD Institute of Mechanics Chinese Academy of Sciences Beijing100190 China School of Engineering Science University of Chinese Academy of Sciences Beijing100049 China State Key Laboratory of Aerodynamics China Aerodynamics Research and Development Center Mianyang621000 China
A novel self-sustaining mechanism is proposed for large-scale helical structures in compressible turbulent flows. The existence of two channels of subgrid-scale and viscosity terms for large-scale helicity evolution i... 详细信息
来源: 评论
Atomic Rydberg-state excitation in strong spatially inhomogeneous fields
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Physical Review A 2023年 第3期107卷 033104-033104页
作者: Shilin Hu Xiaopeng Yi Li Guo Chengrui Bi Jing Chen Guangdong Provincial Key Laboratory of Quantum Metrology and Sensing & School of Physics and Astronomy Sun Yat-Sen University (Zhuhai Campus) Zhuhai 519082 China Institute of Applied Physics and Computational Mathematics P. O. Box 8090 Beijing 100088 China Department of Physics Shanghai Normal University Shanghai 200234 China Department of Modern Physics and Hefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences University of Science and Technology of China Hefei 230026 China Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology Center for Advanced Material Diagnostic Technology and College of Engineering Physics Shenzhen Technology University Shenzhen 518118 China
We investigated the Rydberg-state excitation process of a hydrogen atom subjected to spatially homogeneous and inhomogeneous laser fields by means of ab initio calculations. It is found that, comparing with atoms expo... 详细信息
来源: 评论
Emergent conformal boundaries from finite-entanglement scaling in matrix product states
arXiv
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arXiv 2023年
作者: Huang, Rui-Zhen Zhang, Long Läuchli, Andreas M. Haegeman, Jutho Verstraete, Frank Vanderstraeten, Laurens Department of Physics and Astronomy University of Ghent Belgium Kavli Institute for Theoretical Sciences CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of Sciences Beijing100190 China Laboratory for Theoretical and Computational Physics Paul Scherrer Institute Villigen Switzerland Lausanne Switzerland Department of Applied Mathematics and Theoretical Physics University of Cambridge United Kingdom Center for Nonlinear Phenomena and Complex Systems Université Libre de Bruxelles Belgium
The use of finite entanglement scaling with matrix product states (MPS) has become a crucial tool for studying one-dimensional critical lattice theories, especially those with emergent conformal symmetry. We argue tha... 详细信息
来源: 评论