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We are interested in a kinetic equation intended to describe the interaction of particles with their environment. The environment is modeled by a collection of local vibrational degrees of freedom. We establish the existence of weak…

偏微分方程分析 · 数学 2016-03-14 Stephan De Bièvre , Arthur Vavasseur , Thierry Goudon

This paper investigates the stability of traveling wave solutions to the free boundary Euler equations with a submerged point vortex. We prove that sufficiently small-amplitude waves with small enough vortex strength are conditionally…

偏微分方程分析 · 数学 2019-07-30 Kristoffer Varholm , Erik Wahlén , Samuel Walsh

Consider the Vlasov-Poisson-Landau system with Coulomb potential in the weakly collisional regime on a $3$-torus, i.e. $$\begin{aligned} \partial_t F(t,x,v) + v_i \partial_{x_i} F(t,x,v) + E_i(t,x) \partial_{v_i} F(t,x,v) = \nu…

偏微分方程分析 · 数学 2022-09-13 Sanchit Chaturvedi , Jonathan Luk , Toan T. Nguyen

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

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

We numerically analyse solutions of the spherically symmetric gravitational Vlasov-Poisson system close to compactly supported stable steady states. We observe either partially undamped oscillations or macroscopically damped solutions. We…

星系天体物理 · 物理学 2024-09-24 Christopher Straub

It is well known that steady states of the Vlasov-Poisson system, a widely used model in non-relativistic galactic dynamics, have negative energy. In this paper we derive the analogous property for two relativistic generalizations of the…

数学物理 · 物理学 2015-05-14 Simone Calogero , Juan Calvo , Óscar Sánchez , Juan Soler

We prove the stability of de Sitter space-time as a solution to the Einstein-Vlasov system with massless particles. The semi-global stability of Minkowski space-time is also addressed. The proof relies on conformal techniques, namely…

广义相对论与量子宇宙学 · 物理学 2020-05-18 Jérémie Joudioux , Maximilian Thaller , Juan A. Valiente Kroon

This short review is devoted to the problem of the equilibrium of stellar dynamical systems in the context of the Vlasov-Poisson model. In a first part we will review some classical problems posed by the application of the Vlasov-Poisson…

天体物理学 · 物理学 2009-11-13 jerome perez

We consider the Vlasov--Poisson system with a repulsive harmonic potential and prove the (modified) scattering of solutions, as well as the existence of wave operators, in any spatial dimension $d\geq 2$. The main novelty of this work is…

偏微分方程分析 · 数学 2026-02-26 Wenrui Huang , Hyunwoo Kwon

A collisionless plasma is modeled by the Vlasov-Poisson system in three space dimensions. A fixed background of positive charge - dependant upon only velocity - is assumed. The situation in which mobile negative ions balance the positive…

偏微分方程分析 · 数学 2010-01-06 Stephen Pankavich

Using direct methods of the calculus of variations we establish the existence of an infinite class of spherically-symmetric solutions to the multi-field Schr\"odinger-Poisson system. This is achieved by proving that the energy functional…

数学物理 · 物理学 2026-05-29 Emmanuel Chávez Nambo , Olivier Sarbach

We prove the linear and nonlinear asymptotic stability of small amplitude one-dimensional solitary waves submitted to small localized irrotational perturbations in the three dimensional Euler-Poisson system describing the dynamics of ions.…

偏微分方程分析 · 数学 2025-08-01 Frédéric Rousset , Changzhen Sun

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

The proof of the Jacobi property of the guiding-center Vlasov-Maxwell bracket underlying the Hamiltonian structure of the guiding-center Vlasov-Maxwell equations is presented.

等离子体物理 · 物理学 2021-10-01 Alain J. Brizard

We consider the Vlasov-Poisson system with initial data a small, radial, absolutely continuous perturbation of a point charge. We show that the solution is global and disperses to infinity via a modified scattering along trajectories of the…

偏微分方程分析 · 数学 2021-06-30 Benoit Pausader , Klaus Widmayer

We consider the three dimensional gravitational Vlasov-Poisson (GVP) system in both classical and relativistic cases. The classical problem is subcritical in the natural energy space and the stability of a large class of ground states has…

偏微分方程分析 · 数学 2014-11-18 Mohammed Lemou , Florian Mehats , Pierre Raphael

If the Vlasov-Poisson or Einstein-Vlasov system is linearized about an isotropic steady state, a linear operator arises the properties of which are relevant in the linear as well as nonlinear stability analysis of the given steady state. We…

数学物理 · 物理学 2020-09-16 Gerhard Rein , Christopher Straub

In this work, we consider the smoothing effect of Vlasov-Poisson-Landau system for both hard and soft potential. In particular, we prove that any classical solutions becomes immediately smooth with respect to all variables. We also give a…

偏微分方程分析 · 数学 2024-02-08 Dingqun Deng

Non-holonomic mechanical systems can be described by a degenerate almost-Poisson structure (dropping the Jacobi identity) in the constrained space. If enough symmetries transversal to the constraints are present, the system reduces to a…

数学物理 · 物理学 2022-09-21 Pedro de M. Rios , Jair Koiller