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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 paper we consider the non-cutoff Boltzmann equation in spatially inhomogeneous case. We prove the propagation of Gevrey regularity for the so-called smooth Maxwellian decay solutions to the Cauchy problem of spatially inhomogeneous…

Analysis of PDEs · Mathematics 2013-12-19 Teng-Fei Zhang , Zhaoyang Yin

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

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…

Analysis of PDEs · Mathematics 2024-01-22 Jun-Ling Chen , Wei-Xi Li , Chao-Jiang Xu

We consider the spatially inhomogeneous non-cutoff Kac's model of the Boltzmann equation. We prove that the Cauchy problem for the fluctuation around the Maxwellian distribution enjoys Gelfand-Shilov regularizing properties with respect to…

Analysis of PDEs · Mathematics 2015-03-23 Yoshinori Morimoto , Nicolas Lerner , Karel Pravda-Starov , Chao-Jiang 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

It has long been suspected that the non-cutoff Boltzmann operator has similar coercivity properties as a fractional Laplacian. This has led to the hope that the homogenous Boltzmann equation enjoys similar regularity properties as the heat…

Analysis of PDEs · Mathematics 2017-07-24 Jean-Marie Barbaroux , Dirk Hundertmark , Tobias Ried , Semjon Vugalter

In this paper we study the Gevrey regularity for the weak solutions to the Cauchy problem of the non-cutoff spatially homogeneous Botlzmann equation for the Maxwellian molecules model with the singularity exponent $s\in (0,1)$. We establish…

Analysis of PDEs · Mathematics 2013-12-23 Teng-Fei Zhang , Zhaoyang Yin

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

This is a continuation of our series of works for the inhomogeneous Boltzmann equation. We study qualitative properties of classical solutions, precisely, the full regularization in all variables, uniqueness, non-negativity and convergence…

Analysis of PDEs · Mathematics 2015-05-19 Radjesvarane Alexandre , Yoshinori Morimoto , Seiji Ukai , Chao-Jiang Xu , Tong Yang

In this work, we study the Cauchy problem for the radially symmetric spatially homogeneous Boltzmann equation with Debye-Yukawa potential. We prove that this Cauchy problem enjoys the same smoothing effect as the Cauchy problem defined by…

Analysis of PDEs · Mathematics 2016-04-27 Léo Glangetas , Hao-Guang Li

In this paper, we study the Cauchy problem for the linear spatially homogeneous Boltzamnn equation with Debye-Yukawa potential. Using the spectral decomposition of the linear operator, we prove that, for an initial datum in the sense of…

Analysis of PDEs · Mathematics 2015-12-22 Léo Glangetas , Hao-Guang Li

In this paper, we study the Gevrey regularity of spatially homogeneous Boltzmann equation without angular cutoff. We prove the propagation of Gevrey regularity for $C^\infty$ solutions with the Maxwellian decay to the Cauchy problem of…

Analysis of PDEs · Mathematics 2012-01-11 Teng-Fei Zhang , Zhaoyang Yin

The Boltzmann equation without Grad's angular cutoff assumption is believed to have regularizing effect on the solution because of the non-integrable angular singularity of the cross-section. However, even though so far this has been…

Analysis of PDEs · Mathematics 2015-05-14 Radjesvarane Alexandre , Y. Morimoto , Seiji Ukai , Chao-Jiang Xu , Tong Yang

In the paper, for the Cauchy problem on the non-cutoff Boltzmann equation in torus, we establish the global-in-time Gevrey smoothness in velocity and space variables for a class of low-regularity mild solutions near Maxwellians with the…

Analysis of PDEs · Mathematics 2021-05-04 Renjun Duan , Wei-Xi Li , Lvqiao Liu

In this paper we show the Gevrey regularizing effect of solutions to the non-cutoff spatially homogeneous and inhomogeneous Boltzmann equation for a particular soft potential with critical singularity s=1/2.

Analysis of PDEs · Mathematics 2013-12-23 Teng-Fei Zhang , Zhaoyang Yin

It is known that the singularity in the non-cutoff cross-section of the Boltzmann equation leads to the gain of regularity and gain of weight in the velocity variable. By defining and analyzing a non-isotropy norm which precisely captures…

Analysis of PDEs · Mathematics 2010-10-28 Radjesvarane Alexandre , Yoshinori Morimoto , Seiji Ukai , Chao-Jiang Xu , Tong Yang

In this work, we investigate the Cauchy problem for the spatially inhomogeneous non-cutoff Kac equation. If the initial datum belongs to the spatially critical Besov space, we can prove the well-posedness of weak solution under a…

Analysis of PDEs · Mathematics 2019-02-19 Hongmei Cao , Hao-Guang Li , Chao-Jiang Xu , Jiang Xu

In this paper we study the Gevrey smoothing effect of solutions to the non-cutoff spatially homogeneous and inhomogeneous Boltzmann equation for soft potential. We consider the mild singularity case $s<1/2$ as we did in the previous work…

Analysis of PDEs · Mathematics 2013-12-19 Teng-Fei Zhang , Zhaoyang Yin

We introduce a fast Fourier spectral method for the spatially homogeneous Boltzmann equation with non-cutoff collision kernels. Such kernels contain non-integrable singularity in the deviation angle which arise in a wide range of…

Computational Physics · Physics 2020-10-28 Jingwei Hu , Kunlun Qi
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