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We study the Cauchy problem for a system of cubic nonlinear Klein-Gordon equations in one space dimension. Under a suitable structural condition on the nonlinearity, we will show that the solution exists globally and decays of the order…

偏微分方程分析 · 数学 2016-02-11 Donghyun Kim

The Cauchy problem is revisited for the so-called relativistic Vlasov-Poisson system in the attractive case. Global existence and uniqueness of spherical classical solutions is proved under weaker assumptions than previously used. A new…

数学物理 · 物理学 2009-02-06 Michael K. -H. Kiessling , A. Shadi Tahvildar-Zadeh

The initial value problem for the Vlasov-Poisson system is by now well understood in the case of an isolated system where, by definition, the distribution function of the particles as well as the gravitational potential vanish at spatial…

广义相对论与量子宇宙学 · 物理学 2009-10-22 Gerhard Rein , Alan D. Rendall

We study the asymptotic behavior of small data solutions to the screened Vlasov-Poisson equation on $\mathbb{R}^d\times\mathbb{R}^d$ near vacuum. We show that for dimensions $d\geq 2$, under mild assumptions on localization (in terms of…

偏微分方程分析 · 数学 2026-03-04 Mikaela Iacobelli , Stefano Rossi , Klaus Widmayer

In this paper, we study the asymptotic behaviors of solutions to the inhomogeneous Navier-Stokes-Vlasov system in $\mathbb{R}^{3}\times\mathbb{R}^{3}$, where the initial fluid density is allowed to vanish. We establish the uniform bound of…

偏微分方程分析 · 数学 2025-05-12 Hai-Liang Li , Ling-Yun Shou , Yue Zhang

We construct spherically symmetric, static solutions to the Einstein-Vlasov system with non-vanishing cosmological constant $\Lambda$. The results are divided as follows. For small $\Lambda>0$ we show existence of globally regular solutions…

广义相对论与量子宇宙学 · 物理学 2014-09-19 Håkan Andréasson , David Fajman , Maximilian Thaller

We prove the convergence of a spectral discretization of the Vlasov-Poisson system. The velocity term of the Vlasov equation is discretized using either Hermite functions on the infinite domain or Legendre polynomials on a bounded domain.…

数值分析 · 数学 2018-03-29 Gianmarco Manzini , Daniele Funaro , Gian Luca Delzanno

In Newtonian gravity, a self-gravitating collisionless gas around a massive object such as a star or a planet is modeled via the Vlasov--Poisson system with an external Kepler potential. The presence of this attractive potential allows for…

偏微分方程分析 · 数学 2026-05-06 Sanchit Chaturvedi , Jonathan Luk

We study the uniqueness, the continuity in $L^2$ and the large time decay for the Leray solutions of the $3D$ incompressible Navier-Stokes equations with the nonlinear exponential damping term $a (e^{b |u|^{\bf 2}}-1)u$, ($a,b>0$) studied…

偏微分方程分析 · 数学 2022-06-08 Mongi Blel , Jamel Benameur

For barotropic compressible Navier-Stokes equations in three-dimensional (3D) bounded domains, we prove that any finite energy weak solution obtained by Lions [Mathematical topics in fluid mechanics, Vol. 2. Compressible models(1998)] and…

偏微分方程分析 · 数学 2018-05-17 Yan-Fang Peng , Xiaoding Shi

This article concerns the global-in-time existence of smooth solutions with small amplitude to two space dimensional Euler-Poisson system. The main difficulty lies in the slow time decay $(1+t)^{-1}$ of the linear system. Inspired by Ozawa,…

偏微分方程分析 · 数学 2015-05-30 Juhi Jang

In this work, we consider the Vlasov-Poisson-Boltzmann system without angular cutoff and the Vlasov-Poisson-Landau system with Coulomb potential near a global Maxwellian $\mu$. We establish the global existence, uniqueness and large time…

偏微分方程分析 · 数学 2024-05-29 Chuqi Cao , Dingqun Deng , Xingyu Li

This paper studies, in fine details, the long-time asymptotic behavior of decaying solutions of a general class of dissipative systems of nonlinear differential equations in complex Euclidean spaces. The forcing functions decay, as time…

经典分析与常微分方程 · 数学 2022-01-03 Luan Hoang

We study existence and uniqueness of the solution to the gravitational Vlasov-Poisson system evolving in $\mathbb{R}^3$. It is assumed that initially the particles are distributed according to a spatial density with a power-law decay in…

偏微分方程分析 · 数学 2024-07-16 Guido Cavallaro , Carlo Marchioro

We present a novel method for solving the linearized Vlasov--Poisson equation, based on analyticity properties of the equilibrium and initial condition through Cauchy-type integrals, that produces algebraic expressions for the distribution…

等离子体物理 · 物理学 2023-07-05 Frank M. Lee , B. A. Shadwick

We consider the Vlasov-HMF (Hamiltonian Mean-Field) model. We consider solutions starting in a small Sobolev neighborhood of a spatially homogeneous state satisfying a linearized stability criterion (Penrose criterion). We prove that these…

偏微分方程分析 · 数学 2016-01-27 Erwan Faou , Frédéric Rousset

Here we prove the linear stability of a family of `$n+1$'-dimensional Friedmann Lema\^{i}tre Robertson Walker (FLRW) cosmological models of general relativity. We show that the solutions to the linearized Einstein-Euler field equations…

广义相对论与量子宇宙学 · 物理学 2021-10-01 Puskar Mondal

We consider the Vlasov-Poisson system in a cosmological setting and prove nonlinear stability of homogeneous solutions against small, spatially periodic perturbations in the sup-norm of the spatial mass density. This result is connected…

广义相对论与量子宇宙学 · 物理学 2009-10-28 Gerhard Rein

In this paper, we study small data solutions for the Vlasov-Poisson system with the simplest external potential, for which unstable trapping holds for the associated Hamiltonian flow. We prove sharp decay estimates in space and time for…

偏微分方程分析 · 数学 2023-04-25 Anibal Velozo Ruiz , Renato Velozo Ruiz

In this paper, we study the large-time behavior of solutions to a class of partially dissipative linear hyperbolic systems with applications in velocity-jump processes in several dimensions. Given integers $n,d\ge 1$, let $\mathbf…

偏微分方程分析 · 数学 2017-08-01 Thinh Tien Nguyen