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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

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 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

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…

Analysis of PDEs · Mathematics 2023-11-06 Chao-Jiang Xu , Yan Xu

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

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

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

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…

Analysis of PDEs · Mathematics 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…

Analysis of PDEs · Mathematics 2025-09-30 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…

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

Analysis of PDEs · Mathematics 2019-09-16 Christopher Henderson , Stanley Snelson , Andrei Tarfulea

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 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 paper, we consider a class of spatially homogeneous Boltzmann equation without angular cutoff. We prove that any radial symmetric weak solution of the Cauchy problem become analytic for positive time.

Analysis of PDEs · Mathematics 2012-06-06 Léo Glangetas , Mohamed Najeme

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…

Analysis of PDEs · Mathematics 2009-11-21 Yoshinori Morimoto , Chao-Jiang Xu

We study the Cauchy problem of the fractional Kramers-Fokker- Planck equation and show that the solution to the Cauchy problem enjoys an analytic Gelfand-Shilov regularizing effect for positive time.

Analysis of PDEs · Mathematics 2023-05-16 Chao-Jiang Xu , Yan Xu

In this paper, we study the Cauchy problem for radially symmetric homogeneous non-cutoff Boltzmann equation with Maxwellian molecules, the initial datum belongs to Shubin space of the negative index which can be characterized by spectral…

Analysis of PDEs · Mathematics 2017-02-23 Hao-Guang Li , Chao-Jiang Xu

This paper deals with the derivation of some \'a priori estimates for the homogeneous Landau equation with soft potentials. Using the coercivity of the Landau operator for soft potentials, we prove a global estimate of weak solutions in…

Analysis of PDEs · Mathematics 2013-04-02 Radjesvarane Alexandre , Jie Liao , Chunjin Lin

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
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