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Related papers: Entropy dissipation estimates for the Boltzmann eq…

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For the homogeneous Boltzmann equation with (cutoff or non cutoff) hard potentials, we prove estimates of propagation of Lp norms with a weight $(1+ |x|^2)^q/2$ ($1 < p < +\infty$, $q \in \R\_+$ large enough), as well as appearance of such…

Analysis of PDEs · Mathematics 2016-08-16 Laurent Desvillettes , Clément Mouhot

We present in this paper an estimate which bounds from below the entropy dissipation D(f) of the Landau operator with Coulomb interaction by a weighted H^1 norm of the square root of f. As a consequence, we get a weighted L^1_t(L^3_v)…

Analysis of PDEs · Mathematics 2014-10-30 Laurent Desvillettes

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…

Analysis of PDEs · Mathematics 2024-06-06 Matt Spragge , Weiran Sun

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…

Analysis of PDEs · Mathematics 2025-06-30 Ricardo J. Alonso , Pierre Gervais , Bertrand Lods

In this work we present several quantitative results of convergence to equilibrium for the linear Boltzmann operator with soft potentials under Grad's angular cutoff assumption. This is done by an adaptation of the famous entropy method and…

Analysis of PDEs · Mathematics 2017-05-04 José Cañizo , Amit Einav , Bertrand Lods

In this paper, we are interested in the $L^p$-estimates of the Boltzmann equation in the case that the distribution function stays around a travelling local Maxwellian. For this, we divide both sides of the Boltzmann equation by the…

Analysis of PDEs · Mathematics 2010-09-28 Seok-Bae Yun

We prove the Hardy-Littlewood-Sobolev type $L^p$ estimates for the gain term of the Boltzmann collision operator including Maxwellian molecule, hard potential and hard sphere models. Combining with the results of Alonso et al. [2] for the…

Analysis of PDEs · Mathematics 2024-10-25 Ling-Bing He , Jin-Cheng Jiang , Hung-Wen Kuo , Meng-Hao Liang

We prove a linear inequality between the entropy and entropy dissipation functionals for the linear Boltzmann operator (with a Maxwellian equilibrium background). This provides a positive answer to the analogue of Cercignani's conjecture…

Analysis of PDEs · Mathematics 2017-06-13 Marzia Bisi , José A. Cañizo , Bertrand Lods

In this paper, we study the global well-posedness of the Boltzmann equation within the $L_{v}^{p}L_{x}^{\infty}$ framework for soft potential models with angular cutoff in a periodic box $\mathbb{T}^3$. By using a time-involved weight…

Analysis of PDEs · Mathematics 2026-03-13 Jong-in Kim , Gyounghun Ko

In this paper, we find that the linearized collision operator $L$ of the non-cutoff Boltzmann equation with soft potential generates a strongly continuous semigroup on $H^k_n$, with $k,n\in\mathbb{R}$. In the theory of Boltzmann equation…

Analysis of PDEs · Mathematics 2020-06-05 Dingqun Deng

In this paper we study the Cauchy problem for the spatially homogeneous relativistic Landau equation with Coulomb interactions. Despite it's physical importance, this equation has not received a lot of mathematical attention we think due to…

Analysis of PDEs · Mathematics 2019-05-02 Robert M. Strain , Maja Tasković

We consider weak solutions of the inhomogeneous non-cutoff Boltzmann equation in a bounded domain with any of the usual physical boundary conditions: in-flow, bounce-back, specular-reflection and diffuse-reflection. When the mass, energy…

Analysis of PDEs · Mathematics 2023-05-05 Zhimeng Ouyang , Luis Silvestre

The paper concerns $L^1$- convergence to equilibrium for weak solutions of the spatially homogeneous Boltzmann Equation for soft potentials $(-4\le \gm<0$), with and without angular cutoff. We prove the time-averaged $L^1$-convergence to…

Mathematical Physics · Physics 2015-05-13 Eric A. Carlen , Maria C. Carvalho , Xuguang Lu

We prove that solutions to the Boltzmann equation without cut-off satisfying pointwise bounds on some observables (mass, pressure, and suitable moments) enjoy a uniform bound in $L^\infty$ in the case of hard potentials. As a consequence,…

Analysis of PDEs · Mathematics 2025-06-13 Xavier Fernández-Real , Xavier Ros-Oton , Marvin Weidner

We prove a lower bound for the entropy dissipation of the Landau equation with Coulomb potentials by a weighted Lebesgue norm $L^3_{-5/3}$. In particular, we enhance the weight exponent from $-5$, which was established by Desvillettes, to…

Analysis of PDEs · Mathematics 2024-08-08 Sehyun Ji

We consider the non-cutoff Boltzmann equation in the spatially inhomogeneous, soft potentials regime, and establish decay estimates for large velocity. In particular, we prove that pointwise algebraically decaying upper bounds in the…

Analysis of PDEs · Mathematics 2023-11-07 Christopher Henderson , Stanley Snelson , Andrei Tarfulea

In this paper, we prove the propagation of $L^p$ upper bounds for the spatially homogeneous relativistic Boltzmann equation for any $1<p<\infty$. We consider the case of relativistic \textit{hard ball} with Grad's angular cutoff. Our proof…

Analysis of PDEs · Mathematics 2020-02-03 Jin Woo Jang , Seok-Bae Yun

We establish pointwise polynomial decay estimates in velocity space for the spatially inhomogeneous Boltzmann equation without cutoff, in the case of hard potentials ($\gamma +2s > 2$), under the assumption that the mass, energy, and…

Analysis of PDEs · Mathematics 2020-06-24 Stephen Cameron , Stanley Snelson

We consider the spatially inhomogeneous non-cutoff Boltzmann equation with hard potentials in the non-perturbative setting. For initial data with polynomial decay in the velocity variable, we establish the local-in-time existence and…

Analysis of PDEs · Mathematics 2026-02-24 Hao-Guang Li , Wei-Xi Li , Chao-Jiang Xu

This paper extends the results regarding entropic convergence and the strong linearized limit for the Boltzmann equation (without external force) in [C. David Levermore. Entropic convergence and the linearized limit for the Boltzmann…

Analysis of PDEs · Mathematics 2025-10-07 Tina Mai
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