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In this paper, we study the smoothness effect of Cauchy problem for the spatially homogeneous Landau equation in the hard potential case and the Maxwellian molecules case. We obtain the analytic smoothing effect for the solutions under…

Analysis of PDEs · Mathematics 2009-10-16 Hua Chen , Wei-Xi 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…

Analysis of PDEs · Mathematics 2019-10-31 Yoshinori Morimoto , 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…

Analysis of PDEs · Mathematics 2013-01-24 Yoshinori Morimoto , Karel Pravda-Starov , Chao-Jiang 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…

Analysis of PDEs · Mathematics 2024-06-14 Xiao-Dong Cao , Chao-Jiang Xu

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…

Analysis of PDEs · Mathematics 2022-06-07 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…

Analysis of PDEs · Mathematics 2017-08-23 Hao-Guang Li , Chao-Jiang 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…

Analysis of PDEs · Mathematics 2022-05-09 Hongmei Cao , Wei-Xi Li , 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…

Analysis of PDEs · Mathematics 2022-10-05 Chao-Jiang Xu , Yan 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.

Analysis of PDEs · Mathematics 2023-09-22 Xiao-Dong Cao , Chao-Jiang Xu , Yan Xu

We investigate the Cauchy problem and the diffusion asymptotics for a spatially inhomogeneous kinetic model associated to a nonlinear Fokker-Planck operator. We derive the global well-posedness result with instantaneous smoothness effect,…

Analysis of PDEs · Mathematics 2024-03-13 Francesca Anceschi , Yuzhe Zhu

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…

Analysis of PDEs · Mathematics 2022-05-24 Hao-Guang Li , Chao-Jiang Xu

In this work, we study the spatially inhomogeneous Kac equation with a non-cutoff cross section in a setting close to equilibrium. We prove that the solution to the Cauchy problem exhibits a sharp Gevrey-Gelfand-Shilov smoothing effect with…

Analysis of PDEs · Mathematics 2025-12-10 Xinzhi Cai , Hongmei Cao , Chao-jiang Xu

In this work, we study the Cauchy problem for the spatially homogeneous non-cutoff Boltzamnn equation with Maxwellian molecules. We prove that this Cauchy problem enjoys Gelfand-Shilov regularizing effect, that means the smoothing…

Analysis of PDEs · Mathematics 2015-11-18 Leo Glangetas , 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…

Analysis of PDEs · Mathematics 2025-03-04 Xiao-Dong Cao , Chao-Jiang Xu , Yan Xu

In this paper we study Cauchy problem for thermoelastic plate equations with friction or structural damping in $\mathbb{R}^n$, $n\geq1$, where the heat conduction is modeled by Fourier's law. We explain some qualitative properties of…

Analysis of PDEs · Mathematics 2020-05-19 Wenhui Chen

We prove that the Cauchy problem associated to the radially symmetric spatially homogeneous non-cutoff Boltzmann equation with Maxwellian molecules enjoys the same Gelfand-Shilov regularizing effect as the Cauchy problem defined by the…

Analysis of PDEs · Mathematics 2013-09-12 Nicolas Lerner , Yoshinori Morimoto , Karel Pravda-Starov , Chao-Jiang Xu

In this article we study the Gevrey regularization effect for the spatially inhomogeneous Boltzmann equation without angular cutoff. This equation is partially elliptic in the velocity direction and degenerates in the spatial variable. We…

Analysis of PDEs · Mathematics 2018-06-01 Hua Chen , Xin Hu , Wei-Xi Li , Jinpeng Zhan

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…

Analysis of PDEs · Mathematics 2025-09-30 Xiao-Dong Cao , Chao-Jiang Xu , Yan Xu

We consider the Cauchy problem with smooth data for compressible Euler equations in many dimensions and concentrate on two cases: solutions with finite mass and energy and solutions corresponding to a compact perturbation of a nontrivial…

Analysis of PDEs · Mathematics 2020-10-30 Olga Rozanova

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…

Analysis of PDEs · Mathematics 2022-05-17 Hao-Guang Li , Chao-Jiang Xu
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