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Linear stability of a plane shock waves in ultrarelativistic anisotropic hydrodynamics is investigated. The properties of the amplitudes of perturbations of physical quantities are studied depending on the components of the wave vector of a…

核理论 · 物理学 2023-09-21 Aleksandr Kovalenko

We show that under rather general assumptions on the form of the entropy function, the energy balance equation for a system in thermodynamic equilibrium is equivalent to a set of nonlinear equations of hydrodynamic type. This set of…

可精确求解与可积系统 · 物理学 2012-10-01 Giuseppe De Nittis , Antonio Moro

In this article, we develop a functional-analytic framework to establish existence, uniqueness, regularity of disintegration, and statistical properties of equilibrium states for a broad class of dynamical systems, potentially discontinuous…

动力系统 · 数学 2026-02-20 Rafael Bilbao , Rafael Lucena

The hydrodynamic model is used to describe the single-particle spectra and elliptic flow of hadrons at RHIC and to predict the emission angle dependence of HBT correlations at RHIC and LHC energies.

核理论 · 物理学 2009-11-10 Ulrich W. Heinz

Consider the equivariant wave map equation from Minkowski space to a rotationnally symmetric manifold which has an equator (example: the sphere). In dimension 3, this article gives a necessary and sufficient condition for the existence of a…

偏微分方程分析 · 数学 2008-06-26 Pierre Germain

We derive a new hyperbolic model describing the propagation of internal waves in a stratified shallow water with a non-hydrostatic pressure distribution. The construction of the hyperbolic model is based on the use of additional…

流体动力学 · 物理学 2020-05-28 Alexander Chesnokov , Valery Liapidevskii

We employ a two-dimensional grid-based hydrodynamic model to simulate upper atmospheric dynamics on extrasolar giant planets. Our model is well-suited to simulate the dynamics of the atmospheres of planets with high orbital eccentricity…

天体物理学 · 物理学 2009-11-13 Jonathan Langton , Gregory Laughlin

Numerous experimental and theoretical results in liquids and plasmas suggest the presence of a critical momentum at which the shear diffusion mode collides with a non-hydrodynamic relaxation mode, giving rise to propagating shear waves.…

高能物理 - 理论 · 物理学 2021-04-07 Matteo Baggioli

We present a full investigation into shock wave profile description using hydrodynamics models. We identified constitutive equations that provide better agreement for all parameters involved in testing hydrodynamic equations for the…

流体动力学 · 物理学 2021-10-04 M. H. Lakshminarayana Reddy , S. Kokou Dadzie

Using numerical holography, we study the collision of a planar sheet of energy with a bounded localized distribution of energy. The collision, which mimics proton-nucleus collisions, produces a localized lump of debris with transverse size…

高能物理 - 理论 · 物理学 2015-12-16 Paul M. Chesler

We consider a one-dimensional system arising from a chemotaxis model in tumour angiogenesis, which is described by a Keller-Segel equation with singular sensitivity. This hyperbolic-parabolic system is known to allow viscous shocks…

偏微分方程分析 · 数学 2019-10-24 Kyudong Choi , Moon-Jin Kang , Alexis Vasseur

We study the behavior of nonlinear waves in a two-dimensional medium with density and stress relation that vary periodically in space. Efficient approximate Riemann solvers are developed for the corresponding variable-coefficient…

数值分析 · 数学 2013-07-18 Manuel Quezada de Luna David I. Ketcheson

Thermodynamics and dynamics of a classical two-dimensional system with dipole-like isotropic repulsive interactions are studied systematically using extensive molecular dynamics (MD) simulations supplemented by appropriate theoretical…

软凝聚态物质 · 物理学 2018-03-02 Sergey Khrapak , Nikita Kryuchkov , Stanislav Yurchenko

In the present work, we consider a variety of two-component, one-dimensional states in nonlinear Schrodinger equations in the presence of a parabolic trap, inspired by the atomic physics context of Bose-Einstein condensates. The use of…

斑图形成与孤子 · 物理学 2017-06-28 Haitao Xu , Panayotis G. Kevrekidis , Todd Kapitula

The hydrodynamics for a gas of hard-spheres which sometimes experience inelastic collisions resulting in the loss of a fixed, velocity-independent, amount of energy $\Delta $ is investigated with the goal of understanding the coupling…

软凝聚态物质 · 物理学 2007-05-23 James F. Lutsko

Hydrodynamics provides a successful framework to effectively describe the dynamics of complex many-body systems ranging from subnuclear to cosmological scales by introducing macroscopic quantities such as particle densities and fluid…

We consider the hydrodynamic behavior of some conservative particle systems with degenerate jump rates without exclusive constraints. More precisely, we study the particle systems without restrictions on the total number of particles per…

概率论 · 数学 2017-05-01 Makiko Sasada

We use a hydrodynamic model to study the space-time evolution transverse to the beam direction in ultrarelativistic heavy-ion collisions with nonzero impact parameters. We focus on the influence of early pressure on the development of…

核理论 · 物理学 2009-10-09 P. F. Kolb , J. Sollfrank , P. V. Ruuskanen , U. Heinz

The physical quantities in a gas should vary continuously across a shock. However, the physics inherent in the compressible Euler equations is insufficient to describe the width or structure of the shock. We demonstrate the existence of…

偏微分方程分析 · 数学 2026-01-13 Dallas Albritton , Jacob Bedrossian , Matthew Novack

In this paper we apply hydrodynamics for systems with continuous broken symmetries to heavy ion collisions in the framework of (1+1) dimensional Bjorken model. The temperature profile with respect to proper time determined in that context…

高能物理 - 唯象学 · 物理学 2009-11-07 Y. Lallouet , D. Davesne , C. Pujol