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In this work, we study the Cauchy problem of the spatially homogeneous Landau equation with hard potentials in a close-to-quilibrium framework. We prove that the solution to the Cauchy problem enjoys the analytic regularizing effect of the…

偏微分方程分析 · 数学 2022-06-07 Chao-Jiang Xu , Yan Xu

The smoothing effect of the Cauchy problem for a class of kinetic equations is studied. We firstly consider the spatially homogeneous non linear Landau equation with Maxwellian molecules and inhomogeneous linear Fokker-Planck equation to…

偏微分方程分析 · 数学 2009-11-21 Yoshinori Morimoto , Chao-Jiang Xu

In this note, we study the Cauchy problem of the linear spatially homogeneous Landau equation with soft potentials. We prove that the solution to the Cauchy problem enjoys the analytic regularizing effect of the time variable with an L2…

偏微分方程分析 · 数学 2022-10-05 Chao-Jiang Xu , Yan Xu

We study the spatially inhomogeneous Landau equations with hard potential in the perturbation setting, and establish the analytic smoothing effect in both spatial and velocity variables for a class of low-regularity weak solutions. This…

偏微分方程分析 · 数学 2022-05-09 Hongmei Cao , Wei-Xi Li , Chao-Jiang Xu

In this work, we study the linear Landau equation with soft potential and show that the solution to the Cauchy problem with initial datum in $L^{2}(\mathbb{R}^3)$ enjoys an analytic regularizing effect, and the evolution of analytic radius…

偏微分方程分析 · 数学 2022-05-17 Hao-Guang Li , Chao-Jiang Xu

We consider the Cauchy problem of the nonlinear Landau equation of Maxwellian molecules, under the perturbation frame work to global equilibrium. We show that if $H^r_x(L^2_v), r >3/2$ norm of the initial perturbation is small enough, then…

偏微分方程分析 · 数学 2019-10-31 Yoshinori Morimoto , Chao-Jiang Xu

In this work, we study the nonlinear spatially homogeneous Landau equation with hard potential in a close-to-equilibrium framework, we show that the solution to the Cauchy problem with $L^2$ initial datum enjoys a analytic Gelfand-Shilov…

偏微分方程分析 · 数学 2022-05-24 Hao-Guang Li , Chao-Jiang Xu

Inthispaper,westudytheCauchyproblemoftheinhomogeneous Landau equation with hard potentials under the perturbation framework to global equilibrium. We prove that the solution to the Cauchy problem enjoys the analytic Gelfand-Shilov…

偏微分方程分析 · 数学 2023-11-06 Chao-Jiang Xu , Yan Xu

In this work, we study the nonlinear spatially homogeneous Lan-dau equation with Maxwellian molecules, by using the spectral analysis, we show that the non linear Landau operators is almost linear, and we prove the existence of weak…

偏微分方程分析 · 数学 2017-08-23 Hao-Guang Li , Chao-Jiang Xu

This paper investigates the Cauchy problem of the spatially homogeneous Landau equation with soft potential under the perturbation framework to global equilibrium. We prove that the solution to the Cauchy problem exhibits analyticity in the…

偏微分方程分析 · 数学 2025-03-04 Xiao-Dong Cao , Chao-Jiang Xu , Yan Xu

In this paper, we study a class of strongly degenerate ultraparabolic equations with analytic coefficients. We demonstrate that the Cauchy problem exhibits an analytic smoothing effect. This means that, with an initial datum belonging to…

偏微分方程分析 · 数学 2024-06-14 Xiao-Dong Cao , Chao-Jiang Xu

We consider the non-linear spatially homogeneous Landau equation with Maxwellian molecules in a close-to-equilibrium framework and show that the Cauchy problem for the fluctuation around the Maxwellian equilibrium distribution enjoys a…

偏微分方程分析 · 数学 2013-01-24 Yoshinori Morimoto , Karel Pravda-Starov , Chao-Jiang Xu

We study the Cauchy problem of the Kolmogorov-Fokker-Planck equations and show that the solution enjoys an analytic smoothing effect with L2 initial datum for positive time.

偏微分方程分析 · 数学 2023-09-22 Xiao-Dong Cao , Chao-Jiang Xu , Yan Xu

This paper studies the Cauchy problem for the spatially inhomogeneous Landau equation with soft potential in the perturbative framework around the Maxwellian distribution. Under a smallness assumption on the initial datum with exponential…

偏微分方程分析 · 数学 2025-04-17 Xiao-Dong Cao , Chao-Jiang Xu , Yan Xu

In this note, we consider the Cauchy problem for a model of Kolmogorov-Prandtl type equations. For the small perturbation of a constant state, we prove that it admits a unique classical solution with the initial datum in Sobolev space, and…

偏微分方程分析 · 数学 2025-09-30 Xiao-Dong Cao , Chao-Jiang Xu , Yan Xu

In this paper, we study the Gevrey class regularity for solutions of the spatially homogeneous Landau equations in the hard potential case and the Maxwellian molecules case.

偏微分方程分析 · 数学 2009-11-24 Hua Chen , Weixi Li , Chao-Jiang Xu

We study the Landau equation for a mixture of two species in the whole space, with initial condition of one species near a vacuum and the other near a Maxwellian equilibrium state. For the linearized level, without any smoothness assumption…

数学物理 · 物理学 2017-09-12 Yu-Chu Lin , Haitao Wang , Kung-Chien Wu

For the Maxwellian molecules or hard potentials case, we verify the smoothing effect for the spatially inhomogeneous Boltzmann equation without angular cutoff. Given initial data with low regularity, we prove its solutions at any positive…

偏微分方程分析 · 数学 2024-01-22 Jun-Ling Chen , Wei-Xi Li , Chao-Jiang Xu

In this paper, we consider the spatially homogeneous Landau equation, which is a variation of the Boltzmann equation in the grazing collision limit. For the Landau equation for hard potentials in the style of Desvillettes-Villani (Comm.…

偏微分方程分析 · 数学 2025-01-27 Jin Woo Jang , Junha Kim

We consider the Cauchy problem for the spatially inhomogeneous Landau equation with soft potentials in the case of large (i.e. non-perturbative) initial data. We construct a solution for any bounded, measurable initial data with uniform…

偏微分方程分析 · 数学 2019-09-16 Christopher Henderson , Stanley Snelson , Andrei Tarfulea
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