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This paper proves the existence of small-amplitude global-in-time unique mild solutions to both the Landau equation including the Coulomb potential and the Boltzmann equation without angular cutoff. Since the well-known works (Guo, 2002)…

偏微分方程分析 · 数学 2020-09-18 Renjun Duan , Shuangqian Liu , Shota Sakamoto , Robert M. Strain

In this paper, we consider the long time behaviour of collisionless kinetic equation with stochastic diffuse boundary operators for velocities bounded away from zero. We show that under suitable reasonable conditions, the semigroup is…

偏微分方程分析 · 数学 2021-10-01 Bertrand Lods , Mustapha Mokhtar-Kharroubi

We study the Cauchy Problem for the relativistic Boltzmann equation with near Vacuum initial data. Unique global in time "mild" solutions are obtained uniformly in the speed of light parameter $c \ge 1$. We furthermore prove that solutions…

偏微分方程分析 · 数学 2015-03-17 Robert M. Strain

A family of type N exact solution of the Einstein's field equations, regular everywhere except on the symmetry axis where it possesses a naked curvature singularity, is present. The stress-energy tensor is of the anisotropic fluid coupled…

广义相对论与量子宇宙学 · 物理学 2020-04-14 Faizuddin Ahmed

Half-space problems in the kinetic theory of gases are of great importance in the study of the asymptotic behavior of solutions of boundary value problems for the Boltzmann equation for small Knudsen numbers. In this work a generally…

偏微分方程分析 · 数学 2024-01-09 Niclas Bernhoff

This is the first in a series of papers connecting the boundary conditions for the compressible Navier-Stokes system from the Boltzmann equations with the Maxwell reflection boundary. The slip boundary conditions are formally derived from…

偏微分方程分析 · 数学 2025-06-02 Ning Jiang , Yulong Wu

This is a survey of the author's recent work rather than a broad survey of the literature. The survey is concerned with the global in time solutions of the Cauchy problem for matter waves propagating in the curved spacetimes, which can be,…

偏微分方程分析 · 数学 2013-05-21 Karen Yagdjian

In the current work we construct a multimolecule random process which leads to the Boltzmann equation in the appropriate limit, and which is different from the deterministic real gas dynamics process. We approximate the statistical…

流体动力学 · 物理学 2017-05-30 Rafail V. Abramov

We investigate the Boltzmann equation with spatial smearing, diffusive boundary conditions, and Lions' collision kernel. Both, the physical as well as the velocity space, are assumed to be bounded. Existence and uniqueness of a stationary…

偏微分方程分析 · 数学 2018-07-31 Jörg-Uwe Löbus

The quantum version of the Boltzmann transport equation (Wigner-Boltzmann equation) is a quite useful tool to investigate the effects of energy dissipation in quantum systems. Numerical approaches uses to be employed in order to stablish a…

统计力学 · 物理学 2017-09-19 A. R. Fernandes Nt. , L. F. Santos

In this paper, we study the local-in-time validity of the Hilbert expansion for the relativistic Landau equation. We justify that solutions of the relativistic Landau equation converge to small classical solutions of the limiting…

偏微分方程分析 · 数学 2022-05-04 Zhimeng Ouyang , Lei Wu , Qinghua Xiao

We study the local-in-time hydrodynamic limit of the relativistic Boltzmann equation using a Hilbert expansion. More specifically, we prove the existence of local solutions to the relativistic Boltzmann equation that are nearby the local…

偏微分方程分析 · 数学 2011-04-05 Jared Speck , Robert M. Strain

We present some sufficient conditions for the global in time existence of solutions of the semilinear Klein-Gordon equation of the self-interacting scalar field with complex mass. The coefficients of the equation depend on spatial variables…

偏微分方程分析 · 数学 2019-06-04 Karen Yagdjian

We investigate the large time behavior of solutions to the spatially homogeneous linear Boltzmann equation from a semigroup viewpoint. Our analysis is performed in some (weighted) $L^{1}$-spaces. We deal with both the cases of hard and soft…

偏微分方程分析 · 数学 2015-10-09 Bertrand Lods , Mustapha Mokhtar-Kharroubi

The main objective of this paper is analysis of the initial-boundary value problems for the linear time-fractional diffusion equations with a uniformly elliptic spatial differential operator of the second order and the Caputo type…

偏微分方程分析 · 数学 2023-04-18 Yuri Luchko , Masahiro Yamamoto

On the path towards quantum gravity, we find friction between temporal relations in quantum mechanics (QM) (where they are fixed and field-independent), and in general relativity (where they are field-dependent and dynamic). This paper aims…

广义相对论与量子宇宙学 · 物理学 2017-11-28 Henrique Gomes

We construct a novel class of exact solutions to the Boltzmann equation, in both its classical and quantum formulation, for arbitrary collision laws. When the system is subjected to a specific external forcing, the precise form of which is…

统计力学 · 物理学 2015-06-19 D. Guéry-Odelin , J. G. Muga , M. J. Ruiz-Montero , E. Trizac

Boltzmann kinetic equation is put into the form of an abstract time evolution equation representing links connecting autonomous mesoscopic dynamical theories involving varying amount of details. In the chronological order we present results…

统计力学 · 物理学 2023-04-12 Miroslav Grmela

In this paper, we consider the perturbed solutions with polynomial tail in large velocities for the non-cutoff Boltzmann equation near global Maxwellians in the whole space. The global in time existence is proved in the weighted Sobolev…

偏微分方程分析 · 数学 2024-04-30 Chuqi Cao , Renjun Duan , Zongguang Li

We study the dynamics defined by the Boltzmann equation set in the Euclidean space $\mathbb{R}^D$ in the vicinity of global Maxwellians with finite mass. A global Maxwellian is a special solution of the Boltzmann equation for which the…

偏微分方程分析 · 数学 2016-08-25 Claude Bardos , Irene M. Gamba , François Golse , C. David Levermore