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We adapt the Halperin-Mazenko formalism to analyze two-dimensional active nematics coupled to a generic fluid flow. The governing hydrodynamic equations lead to evolution laws for nematic topological defects and their corresponding density…

软凝聚态物质 · 物理学 2021-05-11 Luiza Angheluta , Zhitao Chen , M. Cristina Marchetti , Mark J. Bowick

We consider the periodic defocusing cubic nonlinear Klein-Gordon equation in three dimensions in the symplectic phase space $H^{\frac{1}{2}}(\mathbb{T}^3) \times H^{-\frac{1}{2}}(\mathbb{T}^3)$. This space is at the critical regularity for…

偏微分方程分析 · 数学 2017-06-08 Dana Mendelson

We investigate the asymptotic in $N$ of the mixing times of a Markov dynamics on $N-1$ ordered particles in an interval. This dynamics consists in resampling at independent Poisson times each particle according to a probability measure on…

概率论 · 数学 2022-03-09 Cyril Labbé , Enguérand Petit

The asymptotic behaviour of solutions of three-dimensional nonlinear elastodynamics in a thin shell is considered, as the thickness $h$ of the shell tends to zero. Given the appropriate scalings of the applied force and of the initial data…

偏微分方程分析 · 数学 2018-04-17 Yizhao Qin , Pengfei Yao

We consider attractive irreducible conservative particle systems on $\mathbb{Z}$, without necessarily nearest-neighbor jumps or explicit invariant measures. We prove that for such systems, the hydrodynamic limit under Euler time scaling…

概率论 · 数学 2007-05-23 C. Bahadoran , H. Guiol , K. Ravishankar , E. Saada

The compressible barotropic Navier-Stokes type system in monodimensional case with Neumann boundary condition given on free boundary is considered. The local and the global existence with uniformly boundedness for small viscosity…

经典分析与常微分方程 · 数学 2009-09-09 Ewelina Kaminska

The purpose of this paper is to investigate the stabilization of a one-dimensional coupled wave equations with non smooth localized viscoelastic damping of Kelvin-Voigt type and localized time delay. Using a general criteria of…

偏微分方程分析 · 数学 2020-07-17 Mohammad Akil , Haidar Badawi , Ali Wehbe

We address the well-posedness of the Cauchy problem corresponding to the relativistic fluid equations, when coupled with the heat-flux constitutive relation arising within the relativistic Chapman-Enskog procedure. The resulting system of…

广义相对论与量子宇宙学 · 物理学 2020-06-11 A. L. Garcia-Perciante , Marcelo E. Rubio , Oscar A. Reula

We study families of dynamical maps generated from interactions with varying degrees of symmetry. For a family of time-independent Hamiltonians, we demonstrate the relationship between symmetry, strong-coupling, perfect entanglers,…

量子物理 · 物理学 2023-02-15 Sean Prudhoe , Sarah Shandera

We derive system of equations describing fluidity of the medium consisting of non-relativistic particles with finite mass-widths. For that we use expressions for the kinetic Noether 4-current and the Noether energy-momentum tensor being…

核理论 · 物理学 2011-01-17 D. N. Voskresensky

This note is devoted to a simple method for proving hypocoercivity of the solutions of a kinetic equation involving a linear time relaxation operator, i.e. the construction of an adapted Lyapunov functional satisfying a Gronwall-type…

偏微分方程分析 · 数学 2009-12-07 Jean Dolbeault , Clément Mouhot , Christian Schmeiser

It is well known, thanks to Lax-Wendroff theorem, that the local conservation of a numerical scheme for a conservative hyperbolic system is a simple and systematic way to guarantee that, if stable, a scheme will provide a sequence of…

数值分析 · 数学 2023-01-16 Remi Abgrall , P Bacigaluppi , S Tokareva

We study the continuous time quantum walk of a single particle (initially localized at a single site) on a one-dimensional spatial lattice with complex nearest neighbour and next-nearest neighbour hopping amplitudes. Complex couplings lead…

量子物理 · 物理学 2021-02-11 Hemlata Bhandari , P. Durganandini

In this note, we study the hydrodynamic limit, in the hyperbolic space-time scaling, for a one-dimensional unpinned chain of quantum harmonic oscillators with random masses. To the best of our knowledge, this is among the first examples,…

数学物理 · 物理学 2021-08-06 Amirali Hannani

We investigate the hydrodynamic limit for weakly asymmetric simple exclusion processes in crystal lattices. We construct a suitable scaling limit by using a discrete harmonic map. As we shall observe, the quasi-linear parabolic equation in…

概率论 · 数学 2016-01-01 Ryokichi Tanaka

We develop a hydrodynamic effective field theory on the Schwinger-Keldysh contour for fluids with charge, energy, and momentum conservation, but only discrete rotational symmetry. The consequences of anisotropy on thermodynamics and…

高能物理 - 理论 · 物理学 2022-03-16 Xiaoyang Huang , Andrew Lucas

Starting from a non-local version of the Prigogine-Herman traffic model, we derive a natural hierarchy of kinetic discrete velocity models for traffic flow consisting of systems of quasi-linear hyperbolic equations with relaxation terms.…

数值分析 · 数学 2023-06-01 Raul Borsche , Axel Klar

Employing a suitable nonlinear Lagrange functional, we derive generalized Hamilton-Jacobi equations for dynamical systems subject to linear velocity constraints. As long as a solution of the generalized Hamilton-Jacobi equation exists, the…

数学物理 · 物理学 2009-11-10 Michele Pavon

We consider Kasner space-time describing anisotropic three dimensional expansion of the fluid and obtain the dissipative evolution equations for shear stress tensor and energy density from kinetic theory. For this, we use the iterative…

高能物理 - 理论 · 物理学 2022-09-13 Priyanka Priyadarshini Pruseth , Swapna Mahapatra

We derive the relativistic non-resistive, viscous second-order magnetohydrodynamic equations for the dissipative quantities using the relaxation time approximation. The Boltzmann equation is solved for a system of particles and…

核理论 · 物理学 2021-04-07 Ankit Kumar Panda , Ashutosh Dash , Rajesh Biswas , Victor Roy