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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601-610 订阅
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Equivariant geometric convolutions for emulation of dynamical systems
arXiv
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arXiv 2023年
作者: Gregory, Wilson G. Hogg, David W. Blum-Smith, Ben Arias, Maria Teresa Wong, Kaze W.K. Villar, Soledad Department of Applied Mathematics and Statistics Johns Hopkins University BaltimoreMD United States Center for Cosmology and Particle Physics Department of Physics New York University New YorkNY United States Max-Planck-Institut für Astronomie Heidelberg Germany Center for Computational Astrophysics Flatiron Institute New YorkNY United States Department of Mathematics Universidad Autónoma de Madrid Madrid Spain Mathematical Institute for Data Science Johns Hopkins University BaltimoreMD United States
Machine learning methods are increasingly being employed as surrogate models in place of computationally expensive and slow numerical integrators for a bevy of applications in the natural sciences. However, while the ... 详细信息
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Impact of time-correlated noise on zero-noise extrapolation
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Physical Review A 2022年 第5期106卷 052406-052406页
作者: Kevin Schultz Ryan LaRose Andrea Mari Gregory Quiroz Nathan Shammah B. David Clader William J. Zeng Johns Hopkins University Applied Physics Laboratory Laurel Maryland 20723 USA Department of Computational Mathematics Science and Engineering Michigan State University East Lansing Michigan 48823 USA Unitary Fund Walnut California 91789 USA Goldman Sachs & Co New York New York 10282 USA
Zero-noise extrapolation is a quantum error mitigation technique that has typically been studied under the ideal approximation that the noise acting on a quantum device is not time correlated. In this paper, we invest... 详细信息
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Breakdown of Boltzmann-type Models for the Alignment of Self-propelled Rods
arXiv
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arXiv 2023年
作者: Murphy, Patrick Perepelitsa, Misha Timofeyev, Ilya Lieber-Kotz, Matan Islas, Brandon Igoshin, Oleg A. Department of Bioengineering Rice University HoustonTX77005 United States Center for Theoretical Biological Physics Rice University HoustonTX77005 United States Department of Mathematics University of Houston TX77204 United States Department of Computational and Applied Mathematics Rice University HoustonTX77005 United States Department of Chemistry Rice University HoustonTX77005 United States Department of Biosciences Rice University HoustonTX77005 United States
Studies in the collective motility of organisms use a range of analytical approaches to formulate continuous kinetic models of collective dynamics from rules or equations describing agent interactions. However, the de... 详细信息
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Complexity for an open quantum system
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Physical Review D 2022年 第4期105卷 046011-046011页
作者: Arpan Bhattacharyya Tanvir Hanif S. Shajidul Haque Md. Khaledur Rahman Indian Institute of Technology Gandhinagar Gujarat 382355 India Department of Theoretical Physics University of Dhaka Dhaka-1000 Bangladesh High Energy Physics Cosmology & Astrophysics Theory Group and The Laboratory for Quantum Gravity & Strings Department of Mathematics and Applied Mathematics University of Cape Town Rondebosch Cape Town 7700 South Africa National Institute for Theoretical and Computational Sciences (NITheCS) Rondebosch Cape Town 7700 South Africa
We study the complexity for an open quantum system. Our system is a harmonic oscillator coupled to a one-dimensional massless scalar field, which acts as the bath. Specifically, we consider the reduced density matrix ... 详细信息
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Energy-based discontinuous Galerkin difference methods for second-order wave equations
arXiv
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arXiv 2021年
作者: Zhang, Lu Appelö, Daniel Hagstrom, Thomas Department of Applied Physics and Applied Mathematics Columbia University New YorkNY United States Department of Computational Mathematics Science & Engineering Department of Mathematics Michigan State University East LansingMI United States Department of Mathematics Southern Methodist University DallasTX United States
We combine the newly-constructed Galerkin difference basis with the energy-based discontinuous Galerkin method for wave equations in second order form. The approximation properties of the resulting method are excellen... 详细信息
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Diffusion spreadability as a probe of the microstructure of complex media across length scales
arXiv
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arXiv 2021年
作者: Torquato, Salvatore Department of Chemistry Princeton Institute for the Science and Technology of Materials Program in Applied and Computational Mathematics Princeton University PrincetonNJ08544 United States
Understanding time-dependent diffusion processes in multiphase media is of great importance in physics, chemistry, materials science, petroleum engineering and biology. Consider the time-dependent problem of mass tran... 详细信息
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Finite-thickness effect of the fluids on bubbles and spikes in Richtmyer–Meshkov instability for arbitrary Atwood numbers
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Plasma Science and Technology 2019年 第2期21卷 9-15页
作者: Wanhai LIU Changping YU Pei WANG Zheng FU Lili WANG Yulian CHEN Research Center of Computational Physics Mianyang Normal University LHD Institute of MechanicsChinese Academy of Sciences Institute of Applied Physics and Computational Mathematics Mechanical and Electrical Engineering Department Lanzhou Resources and Environment Voc-Tech College
This paper investigates the finite-thickness effect of two superimposed fluids on bubbles and spikes in Richtmyer–Meshkov instability(RMI) for arbitrary Atwood numbers by using the method of the small parameter expan... 详细信息
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SINGULAR LIMITS FOR THE NAVIER-STOKES-POISSON EQUATIONS OF VISCOUS PLASMA WITH STRONG DENSITY BOUNDARY LAYER
arXiv
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arXiv 2022年
作者: Ju, Qiangchang Luo, Tao Xu, Xin Institute of Applied Physics and Computational Mathematics Beijing100088 China Department of Mathematics City University of Hong Kong 83 Tat Chee Avenue Kowloon Tong Hong Kong School of Mathematical Sciences College of Oceanic and Atmospheric Sciences Ocean University of China Qingdao China
The quasi-neutral limit of the Navier-Stokes-Poisson system modeling a viscous plasma with vanishing viscosity coefficients in the half-space R3+ is rigorously proved under a Navier-slip boundary condition for velocit... 详细信息
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Learning fluid physics from highly turbulent data using sparse physics-informed discovery of empirical relations (SPIDER)
arXiv
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arXiv 2021年
作者: Gurevich, Daniel R. Golden, Matthew R. Reinbold, Patrick A.K. Grigoriev, Roman O. Program in Applied and Computational Mathematics Princeton University PrincetonNJ08544 United States School of Physics Georgia Institute of Technology AtlantaGA30332 United States
We show how a complete mathematical model of a physical process can be learned directly from data via a hybrid approach combining three simple and general ingredients: physical assumptions of smoothness, locality, and... 详细信息
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Fisher zeroes and dynamical quantum phase transitions for two- and three-dimensional models
arXiv
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arXiv 2024年
作者: Maslowski, Tomasz Cheraghi, Hadi Sirker, Jesko Sedlmayr, Nicholas The Faculty of Mathematics and Applied Physics Rzeszów University of Technology al. Powstańców Warszawy 6 Rzeszów35-959 Poland Computational Physics Laboratory Physics Unit Faculty of Engineering and Natural Sciences Tampere University TampereFI-33014 Finland Helsinki Institute of Physics University of Helsinki FI-00014 Finland Department of Physics and Astronomy Manitoba Quantum Institute University of Manitoba WinnipegR3T 2N2 Canada Institute of Physics M. Curie-Sklodowska University Lublin20-031 Poland
Dynamical quantum phase transitions are non-analyticities in a dynamical free energy (or return rate) which occur at critical times. Although extensively studied in one dimension, the exact nature of the non-analytici... 详细信息
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