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The classification of equilibria for the spatially homogeneous Boltzmann equation for Fermi-Dirac particles is proved for any $n$-dimensional velocity space with $n\ge 2$. The same classification has been proven in \cite{Lu2001} for $n=3$.…

度量几何 · 数学 2022-06-09 Xuguang Lu

We introduce a practical criterion that justifies the propagation and appearance of $L^{p}$-norms for the solutions to the spatially homogeneous Boltzmann equation with very soft potentials without cutoff. Such criterion also provides a new…

偏微分方程分析 · 数学 2025-06-30 Ricardo J. Alonso , Pierre Gervais , Bertrand Lods

The paper deals with the homogenization of a linear Boltzmann equation by the means of the sigma-convergence method. Under a general deterministic assumption on the coefficients of the equation, we prove that the density of the particles…

偏微分方程分析 · 数学 2020-10-28 Patrick Fouegap , Rodrigue Kenne B. , Gabriel Nguetseng , David Dongo , Jean Louis Woukeng

In this paper, we consider the cutoff Boltzmann equation near Maxwellian, we proved the global existence and uniqueness for the cutoff Boltzmann equation in polynomial weighted space for all $\gamma \in (-3, 1]$. We also proved initially…

偏微分方程分析 · 数学 2022-07-22 Chuqi Cao

We prove the appearance of an explicit lower bound on the solution to the full Boltzmann equation in the torus for a broad family of collision kernels including in particular long-range interaction models, under the assumption of some…

偏微分方程分析 · 数学 2016-08-16 Clément Mouhot

In this paper we prove convergence results for homogenization problem for solutions of partial differential system with rapidly oscillating Dirichlet data. Our method is based on analysis of oscillatory integrals. In the uniformly convex…

偏微分方程分析 · 数学 2013-10-22 Hayk Aleksanyan , Henrik Shahgholian , Per Sjölin

This paper gives the first affirmative answer to the question of the global existence of Boltzmann equations without angular cutoff in the $L^\infty$-setting. In particular, we show that when the initial data is close to equilibrium and the…

偏微分方程分析 · 数学 2021-10-12 R. Alonso , Y. Morimoto , W. Sun , T. Yang

We give an explicit bound for the Wasserstein distance with quadratic cost between the solutions of Boltzmann's and Landau's equations in the case of soft and Coulomb potentials. This gives an explicit rate of convergence for the grazing…

数学物理 · 物理学 2012-12-21 David Godinho

This paper deals with the Cauchy-Dirichlet problem for the fractional Cahn-Hilliard equation. The main results consist of global (in time) existence of weak solutions, characterization of parabolic smoothing effects (implying under proper…

偏微分方程分析 · 数学 2018-01-08 Goro Akagi , Giulio Schimperna , Antonio Segatti

We study the homogeneous Boltzmann equation with the fractional Laplacian term. Working on the Fourier side we solve the resulting integral equation, and improve a previous result by Y.-K. Cho. We replace the initial data space with a…

偏微分方程分析 · 数学 2014-11-03 Shota Sakamoto

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

This work is devoted to the analysis of the linear Boltzmann equation in a bounded domain, in the presence of a force deriving from a potential. The collision operator is allowed to be degenerate in the following two senses: (1) the…

偏微分方程分析 · 数学 2014-02-03 Daniel Han-Kwan , Matthieu Léautaud

In this paper it is shown that unique solutions to the relativistic Boltzmann equation exist for all time and decay with any polynomial rate towards their steady state relativistic Maxwellian provided that the initial data starts out…

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

This article considers the spatially inhomogeneous, non-cutoff Boltzmann equation. We construct a large-data classical solution given bounded, measurable initial data with uniform polynomial decay of mild order in the velocity variable. Our…

偏微分方程分析 · 数学 2023-10-17 Christopher Henderson , Stanley Snelson , Andrei Tarfulea

In this paper, we demonstrate a polynomial convergence rate for homogenization of Hamilton-Jacobi equations with quasi-periodic potentials. We establish a connection between the convergence rate of homogenization and the regularity of the…

偏微分方程分析 · 数学 2024-12-23 Bingyang Hu , Son N. T. Tu , Jianlu Zhang

We establish a priori estimates showing the propagation and generation of $L^p$-norms for solutions to the non-cutoff spatially homogeneous Boltzmann equation with soft potentials. The singularity of the collision kernel is key to generate…

偏微分方程分析 · 数学 2024-06-06 Matt Spragge , Weiran Sun

We establish the incompressible low--Mach/high--Reynolds limit for the Boltzmann equation for a broad class of initial data, without recourse to any asymptotic expansion. Exploiting the local Maxwellian manifold and the macro--micro…

偏微分方程分析 · 数学 2026-04-07 Gi-Chan Bae , Chanwoo Kim

We consider a Fermi gas confined by a harmonic trapping potential and we highlight the role of the Fermi-Dirac statistics by studying frequency and damping of collective oscillations of quadrupole type in the framework of the quantum…

凝聚态物理 · 物理学 2007-05-23 L. Vichi

The solutions of the Wigner-transformed time-dependent Hartree--Fock--Bogoliubov equations are studied in the constant-$\Delta$ approximation. This approximation is known to violate particle-number conservation. As a consequence, the…

核理论 · 物理学 2008-11-26 V. I. Abrosimov , D. M. Brink , A. Dellafiore , F. Matera

In this paper we consider the Cauchy problem on the angular cutoff Boltzmann equation near global Maxwillians for soft potentials either in the whole space or in the torus. We establish the existence of global unique mild solutions in the…

偏微分方程分析 · 数学 2021-09-03 Zongguang Li