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We prove an inequality on the Wasserstein distance with quadratic cost between two solutions of the spatially homogeneous Boltzmann equation without angular cutoff, from which we deduce some uniqueness results. In particular, we obtain a…

偏微分方程分析 · 数学 2009-11-13 Nicolas Fournier , Hélène Guérin

In this paper, convergence results on the solutions of a time and space discrete model approximation of the Boltzmann equation for a gas of Maxwellian particles in a bounded domain, obtained by Babovsky and Illner [1989], are extended to…

数值分析 · 数学 2014-10-30 C. P. Grünfeld , D. Marinescu

The Euler-Korteweg equations are a modification of the Euler equations that takes into account capillary effects. In the general case they form a quasi-linear system that can be recast as a degenerate Schr\"odinger type equation. Local…

偏微分方程分析 · 数学 2017-03-08 Corentin Audiard , Boris Haspot

We study the Cauchy theory for a multi-species mixture, where the different species can have different masses, in a perturbative setting on the $3$-dimensional torus. The ultimate aim of this work is to obtain existence, uniqueness and…

偏微分方程分析 · 数学 2020-08-07 Marc Briant , Esther Daus

We consider soft graviton scattering for a theory where Einstein's gravity is minimally coupled to a scalar field in the presence of a cosmological constant, i.e. in a background de Sitter space. Employing a perturbative expansion in a…

高能物理 - 理论 · 物理学 2025-12-08 Divyesh N. Solanki , Pratik Chattopadhyay , Srijit Bhattacharjee

In recent years it has been shown for hard sphere gas that, by retaining the correlation information, dynamical fluctuation and large deviation of empirical measure around Boltzmann equation could be proved, in addition to the classical…

偏微分方程分析 · 数学 2024-09-05 Chenjiayue Qi

We study integrability properties of a general version of the Boltzmann collision operator for hard and soft potentials in $n$-dimensions. A reformulation of the collisional integrals allows us to write the weak form of the collision…

偏微分方程分析 · 数学 2021-09-30 Ricardo J. Alonso , Emanuel Carneiro , Irene M. Gamba

Boundary effects are central to the dynamics of the dilute particles governed by Boltzmann equation. In this paper, we study both the diffuse reflection and the specular reflection boundary value problems for Boltzmann equation with soft…

偏微分方程分析 · 数学 2016-09-21 Shuangqian Liu , Xiongfeng Yang

This paper is concerned with the stability and asymptotic stability at large time of solutions to a system of equations, which includes the Lifschitz-Slyozov-Wagner (LSW) system in the case when the initial data has compact support. The…

偏微分方程分析 · 数学 2011-12-06 Joseph G. Conlon , Barbara Niethammer

We consider the Schr\"odinger equation with no radial assumption on real hyperbolic spaces. We obtain sharp dispersive and Strichartz estimates for a large family of admissible pairs. As a first consequence, we get strong well-posedness…

偏微分方程分析 · 数学 2010-01-07 Jean-Philippe Anker , Vittoria Pierfelice

We prove global well-posedness for low regularity data for the one dimensional quintic defocusing nonlinear Schr\"odinger equation. Precisely we show that a unique and global solution exists for initial data in the Sobolev space…

偏微分方程分析 · 数学 2016-08-14 Daniela De Silva , Nataša Pavlović , Gigliola Staffilani , Nikolaos Tzirakis

We consider a classical system of point particles interacting by means of a short range potential. We prove that, in the low--density (Boltzmann--Grad) limit, the system behaves, for short times, as predicted by the associated Boltzmann…

数学物理 · 物理学 2016-11-28 Mario Pulvirenti , Chiara Saffirio , Sergio Simonella

Homo-energetic solutions to the spatially homogeneous Boltzmann equation have been extensively studied, but their global stability in the inhomogeneous setting remains challenging due to unbounded energy growth under self-similar scaling…

偏微分方程分析 · 数学 2025-09-18 Renjun Duan , Shuangqian Liu , Shunlin Shen

We study the stochastic Nonlinear Schr\"{o}dinger system with multiplicative white noise in energy space $H^1$. Based on deterministic and stochastic Strichartz estimates, we prove the local well-posedness and uniqueness of mild solution.…

偏微分方程分析 · 数学 2019-12-12 Qi Zhang , Jinqiao Duan , Yong Chen

In this paper we prove the global in time existence and uniqueness of solutions of the spatially homogeneous Boltzmann equation for Bose-Einstein particles for the hard sphere model for bounded anisotropic initial data. The main idea of our…

偏微分方程分析 · 数学 2017-08-28 Wenyi Li , Xuguang Lu

The present paper is concerned with Schr\"odinger equations with variable coefficients and unbounded electromagnetic potentials, where the kinetic energy part is a long-range perturbation of the flat Laplacian and the electric (resp.…

偏微分方程分析 · 数学 2016-01-20 Haruya Mizutani

We show that small homogeneous solutions to the Einstein-Boltzmann-scalar field system exist globally towards the future and tend to the de Sitter solution in a suitable sense. More specifically, we assume that the spacetime is of Bianchi…

广义相对论与量子宇宙学 · 物理学 2024-06-18 Ho Lee , Jiho Lee , Ernesto Nungesser

Diffusive limit of the Vlasov-Poisson-Boltzmann system with cutoff soft potentials $-3<\gamma<0$ in the perturbative framework around global Maxwellian still remains open. By introducing a new weighted $H_{x,v}^2$-$W_{x,v}^{2, \infty}$…

偏微分方程分析 · 数学 2023-07-27 Weijun Wu , Fujun Zhou , Yongsheng Li

The spatially homogeneous Boltzmann equation with hard potentials is considered for measure valued initial data having finite mass and energy. We prove the existence of \emph{weak measure solutions}, with and without angular cutoff on the…

偏微分方程分析 · 数学 2012-02-22 Xuguang Lu , Clément Mouhot

The aim of this paper is to study the global existence of solutions to a coupled wave-Klein-Gordon system in space dimension two when initial data are small, smooth and mildly decaying at infinity. Some physical models strictly related to…

偏微分方程分析 · 数学 2018-10-25 Annalaura Stingo