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We develop a mean-field approach for multicomponent stochastic spatially extended systems and use it to obtain a multivariate nonlinear self-consistent Fokker-Planck equation defining the probability density of the state of the system,…

斑图形成与孤子 · 物理学 2017-03-16 Svetlana E. Kurushina , Valerii V. Maximov , Yurii M. Romanovskii

We prove local-in-time existence and uniqueness of an inviscid Boussinesq-type system. We assume the density equation contains nonzero diffusion and that our initial vorticity and density belong to a space of borderline Besov type.

偏微分方程分析 · 数学 2011-10-25 Jacob Glenn-Levin

In the study of solutions to the relativistic Boltzmann equation, their regularity with respect to the momentum variables has been an outstanding question, even local in time, due to the initially unexpected growth in the post-collisional…

偏微分方程分析 · 数学 2016-02-22 Yan Guo , Robert M. Strain

We derive a general scheme to construct infinitely many probabilistic counterparts for solutions to nonlinear PDEs by recasting the latter as different nonlinear Fokker--Planck equations and by constructing, for each of these equations, a…

概率论 · 数学 2026-04-29 Ehsan Abedi , Florian Bechtold , Marco Rehmeier

This paper is devoted to the study of the nonlinear stability of the rarefaction waves of the Vlasov-Poisson-Boltzmann system with slab symmetry in the case where the electron background density satisfies an analogue of the Boltzmann…

偏微分方程分析 · 数学 2014-05-13 Renjun Duan , Shuangqian Liu

This paper investigates the probability distribution of solutions to McKean--Vlasov stochastic differential equations driven by fractional Brownian motion with Hurst parameter H>1/2. Our main contribution is the derivation of the associated…

概率论 · 数学 2026-01-12 Saloua Labed , Nacira Agram , Bernt Oksendal

A uniform approach is introduced to study the existence of measure valued solutions to the homogeneous Boltzmann equation for both hard potential with finite energy, and soft potential with finite or infinite energy, by using Toscani…

偏微分方程分析 · 数学 2016-11-23 Yoshinori Morimoto , Shuaikun Wang , Tong Yang

We formulate a generalized self-consistent stochastic quantum kinetic theory for finite-temperature ultracold Bose gases interacting via a generic long-range interaction, applicable to a broad range of systems, by means of Keldysh…

量子气体 · 物理学 2025-07-28 Nick P. Proukakis , Gerasimos Rigopoulos , Alex Soto

The existence of random dynamical systems for McKean--Vlasov SDEs is established. This is approached by considering the joint dynamics of the corresponding nonlinear Fokker-Planck equation governing the law of the system and the underlying…

概率论 · 数学 2025-07-04 Benjamin Gess , Rishabh S. Gvalani , Shanshan Hu

This paper proves that, under a monotonicity condition, the invariant probability measure of a McKean--Vlasov process can be approximated by weighted empirical measures of some processes including itself. These processes are described by…

概率论 · 数学 2021-12-30 Kai Du , Yifan Jiang , Jinfeng Li

We investigate the random flight process that arises as the Boltzmann-Grad limit of a random scatterer Lorentz gas with variable scatterer density in a gravitational field. For power function densities we show how the parameters of the…

概率论 · 数学 2016-05-10 Krzysztof Burdzy , Douglas Rizzolo

We introduce a class of probability measure-valued diffusions, coined polynomial, of which the well-known Fleming--Viot process is a particular example. The defining property of finite dimensional polynomial processes considered by Cuchiero…

概率论 · 数学 2018-07-10 Christa Cuchiero , Martin Larsson , Sara Svaluto-Ferro

In this paper we extend the homogenization results obtained in (G. Allaire, A. Mikeli\'c, A. Piatnitski, J. Math. Phys. 51 (2010), 123103) for a system of partial differential equations describing the transport of a N-component electrolyte…

偏微分方程分析 · 数学 2020-09-14 Andro Mikelic , Andrey Piatnitski

We analyze the continuous time evolution of a $d$-dimensional system of $N$ self propelled particles with a kinematic constraint on the velocities inspired by the original Vicsek's one \cite{VCB-JCS}. Interactions among particles are…

数学物理 · 物理学 2014-07-29 Michele Gianfelice , Enza Orlandi

We study the occurrence of a Bose-Einstein transition in a dilute gas with repulsive interactions, starting from temperatures above the transition temperature. The formalism, based on the use of Ursell operators, allows us to evaluate the…

统计力学 · 物理学 2007-05-23 M. Holzmann , P. Gruter , F. Laloe

Consider the steady Boltzmann equation with slab symmetry for a monatomic, hard sphere gas in a half space. At the boundary of the half space, it is assumed that the gas is in contact with its condensed phase. The present paper discusses…

偏微分方程分析 · 数学 2021-03-19 Niclas Bernhoff , François Golse

Boundaries occur naturally in kinetic equations and boundary effects are crucial for dynamics of dilute gases governed by the Boltzmann equation. We develop a mathematical theory to study the time decay and continuity of Boltzmann solutions…

偏微分方程分析 · 数学 2015-05-13 Yan Guo

The paper presents a solution to the Boltzmann kinetic equation based on the construction of its discrete conservative model. Discrete analogue of the collision integral is presented as a contraction of a tensor, which is independent from…

统计力学 · 物理学 2017-07-04 George Arabuli

In this paper, the first microscopic approach to the Brownian motion is developed in the case where the mass density of the suspending bath is of the same order of magnitude as that of the Brownian (B) particle. Starting from an extended…

凝聚态物理 · 物理学 2009-10-28 Lydéric Bocquet , Jarosław Piasecki

We propose a specific scaling that formally derives the Euler-Vlasov model for thick sprays which is widely adopted in engineering from the Boltzmann-Enskog model. Beyond validating the kinetic-fluid equations underlying this model, we also…

偏微分方程分析 · 数学 2025-09-08 Zhe Chen