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We study stability, long-time behavior and moment estimates for stochastic evolution equations with additive Wiener noise and with singular drift given by a divergence type quasilinear diffusion operator which may not necessarily exhibit a…

偏微分方程分析 · 数学 2023-09-28 Florian Seib , Wilhelm Stannat , Jonas M. Tölle

We explain the ubiquity and extremely slow evolution of non gaussian out-of-equilibrium distributions for the Hamiltonian Mean-Field model, by means of traditional kinetic theory. Deriving the Fokker-Planck equation for a test particle, one…

统计力学 · 物理学 2009-11-10 Freddy Bouchet , Thierry Dauxois

The full Landau-Lifshitz-Gilbert equation with periodic material coefficients and natural boundary condition is employed to model the magnetization dynamics in composite ferromagnets. In this work, we establish the convergence between the…

偏微分方程分析 · 数学 2022-06-23 Jingrun Chen , Jian-Guo Liu , Zhiwei Sun

This paper deals with the long time behaviour of solutions to the spatially homogeneous Landau equation with hard potentials . We prove an exponential in time convergence towards the equilibrium with the optimal rate given by the spectral…

偏微分方程分析 · 数学 2014-11-21 Kleber Carrapatoso

This study investigates the regularity of kinetic equations with spatial heterogeneity. Recent progress has shown that velocity averages of weak solutions $h$ in $L^p$ ($p>1$) are strongly $L^1_{\text{loc}}$ compact under the natural…

偏微分方程分析 · 数学 2026-04-22 Marko Erceg , Kenneth H. Karlsen , Darko Mitrović

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…

偏微分方程分析 · 数学 2017-05-04 José Cañizo , Amit Einav , Bertrand Lods

Homogenization for non-local operators in periodic environments has been studied intensively. So far, these works are mainly devoted to the qualitative results, that is, to determine explicitly the operators in the limit. To the best of…

偏微分方程分析 · 数学 2024-09-13 Xin Chen , Zhen-Qing Chen , Takashi Kumagai , Jian Wang

We investigate the large time behavior of solutions to the spatially homogeneous linear Boltzmann equation from a semigroup viewpoint. Our analysis is performed in some (weighted) $L^{1}$-spaces. We deal with both the cases of hard and soft…

偏微分方程分析 · 数学 2015-10-09 Bertrand Lods , Mustapha Mokhtar-Kharroubi

We develop a unified and easy to use framework to study robust fully discrete numerical methods for nonlinear degenerate diffusion equations $$ \partial_t u-\mathfrak{L}^{\sigma,\mu}[\varphi(u)]=f \quad\quad\text{in}\quad\quad…

数值分析 · 数学 2019-06-20 Félix del Teso , Jørgen Endal , Espen R. Jakobsen

We study a general class of discrete $p$-Laplace operators in the random conductance model with long-range jumps and ergodic weights. Using a variational formulation of the problem, we show that under the assumption of bounded first moments…

偏微分方程分析 · 数学 2019-04-16 Franziska Flegel , Martin Heida

We consider the spatially inhomogeneous Landau equation with Maxwellian and hard potentials (i.e with $\gamma\in[0,1)$) on the whole space $\mathbb{R}^3$. We prove that if the initial data $f_{\text{in}}$ are close to the vacuum solution…

偏微分方程分析 · 数学 2023-02-22 Sanchit Chaturvedi

In this paper, we find some error estimates for periodic homogenization of p-Laplace type equations under the same structure assumption on homogenized equations. The main idea is that by adjusting the size of the difference quotient of the…

偏微分方程分析 · 数学 2018-12-13 Li Wang , Qiang Xu , Peihao Zhao

Here, we study quantitative homogenization of first-order convex Hamilton-Jacobi equations with $(u/\varepsilon)$-periodic Hamiltonians which typically appear in dislocation dynamics. Firstly, we establish the optimal convergence rate by…

偏微分方程分析 · 数学 2025-07-02 Hiroyoshi Mitake , Panrui Ni , Hung V. Tran

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

In this paper we establish periodic homogenization for Hamilton-Jacobi-Bellman (HJB) equations, associated to nonlocal operators of integro-differential type. We consider the case when the fractional diffusion has the same order as the…

偏微分方程分析 · 数学 2020-02-24 Adina Ciomaga , Daria Ghilli , Erwin Topp

Convergence to a single steady state is shown for non-negative and radially symmetric solutions to a diffusive Hamilton-Jacobi equation with homogeneous Dirichlet boundary conditions, the diffusion being the $p$-Laplacian operator, $p\ge…

偏微分方程分析 · 数学 2011-12-22 Guy Barles , Philippe Laurençot , Christian Stinner

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

We construct an action for the composite Dirac fermion consistent with symmetries of electrons projected to the lowest Landau level. First we construct a generalization of the $g=2$ electron that gives a smooth massless limit on any curved…

介观与纳米尺度物理 · 物理学 2017-09-12 Kartik Prabhu , Matthew M. Roberts

We derive the long time asymptotic of solutions to an evolutive Hamilton-Jacobi-Bellman equation in a bounded smooth domain, in connection with ergodic problems recently studied in \cite{bcr}. Our main assumption is an appropriate…

偏微分方程分析 · 数学 2017-08-02 Daniele Castorina , Annalisa Cesaroni , Luca Rossi

Homogeneous relaxation is a ubiquitous phenomenon in semiclassical kinetic theories where the quasiparticles are distributed uniformly in space, and the equilibration involves only their velocity distribution. For such solutions, the…

高能物理 - 理论 · 物理学 2015-03-19 Ramakrishnan Iyer , Ayan Mukhopadhyay