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We prove the existence of solutions to a non-linear, non-local, degenerate equation which was previously derived as the formal hydrodynamic limit of an active Brownian particle system, where the particles are endowed with a position and an…

偏微分方程分析 · 数学 2023-10-02 Martin Burger , Simon Schulz

In this paper we consider a one-dimensional nonlocal interaction equation with quadratic porous-medium type diffusion in which the interaction kernels are attractive, nonnegative, and integrable on the real line. Earlier results in the…

偏微分方程分析 · 数学 2018-06-08 Marco Di Francesco , Yahya Jaafra

We study the existence and long-time asymptotics of weak solutions to a system of two nonlinear drift-diffusion equations that has a gradient flow structure in the Wasserstein distance. The two equations are coupled through a…

偏微分方程分析 · 数学 2021-12-14 Lisa Beck , Daniel Matthes , Martina Zizza

This paper is devoted to existence and uniqueness results for classes of nonlinear diffusion equations (or systems) which may be viewed as regular perturbations of Wasserstein gradient flows. First, in the case. where the drift is a…

偏微分方程分析 · 数学 2015-05-07 Guillaume Carlier , Maxime Laborde

We consider a nonlocal aggregation diffusion equation incorporating repulsion modelled by nonlinear diffusion and attraction modelled by nonlocal interaction. When the attractive interaction kernel is radially symmetric and strictly…

偏微分方程分析 · 数学 2024-08-23 Roumen Anguelov , Chelsea Bright

We consider a non-interacting one-dimensional gas accelerated by a constant and uniform external field. The energy absorbed from the field is transferred via elastic collisions to a bath of scattering obstacles. At gas-obstacle encounters…

统计力学 · 物理学 2009-11-11 Jaroslaw Piasecki , Rodrigo Soto

We study the long time behavior of the Wasserstein gradient flow for an energy functional consisting of two components: particles are attracted to a fixed profile $\omega$ by means of an interaction kernel $\psi_a(z)=|z|^{q_a}$,and they…

偏微分方程分析 · 数学 2014-01-13 Marco Di Francesco , Massimo Fornasier , Jan-Christian Hütter , Daniel Matthes

In this paper we study a nonlocal reaction-diffusion equation in which the diffusion depends on the gradient of the solution. We prove first the existence and uniqueness of regular and strong solutions. Second, we obtain the existence of…

动力系统 · 数学 2026-02-27 Rubén Caballero , Pedro Marín-Rubio , José Valero

We consider an aggregation-diffusion model, where the diffusion is nonlinear of porous medium type and the aggregation is governed by the Riesz potential of order s. The addition of a quadratic diffusion term produces a more precise…

偏微分方程分析 · 数学 2022-05-27 Yanghong Huang , Edoardo Mainini , Juan Luis Vázquez , Bruno Volzone

Macroscopic models for systems involving diffusion, short-range repulsion, and long-range attraction have been studied extensively in the last decades. In this paper we extend the analysis to a system for two species interacting with each…

偏微分方程分析 · 数学 2018-03-23 Martin Burger , Marco Di Francesco , Simone Fagioli , Angela Stevens

We analyze under which conditions equilibration between two competing effects, repulsion modeled by nonlinear diffusion and attraction modeled by nonlocal interaction, occurs. This balance leads to continuous compactly supported radially…

偏微分方程分析 · 数学 2022-07-19 J. A. Carrillo , S. Hittmeir , B. Volzone , Y. Yao

Motivated by a probabilistic approach to Kahler-Einstein metrics we consider a general non-equilibrium statistical mechanics model in Euclidean space consisting of the stochastic gradient flow of a given (possibly singular) quasi-convex…

数学物理 · 物理学 2016-10-17 Robert J. Berman , Magnus Onnheim

We consider an aggregation-diffusion equation modelling particle interaction with non-linear diffusion and non-local attractive interaction using a homogeneous kernel (singular and non-singular) leading to variants of the Keller-Segel model…

偏微分方程分析 · 数学 2016-12-28 Vincent Calvez , Jose Antonio Carrillo , Franca Hoffmann

We consider a continuum aggregation model with nonlinear local repulsion given by a degenerate power-law diffusion with general exponent. The steady states and their properties in one dimension are studied both analytically and numerically,…

偏微分方程分析 · 数学 2014-03-17 Martin Burger , Razvan Fetecau , Yanghong Huang

We study the existence and the rate of equilibration of weak solutions to a two-component system of non-linear diffusion-aggregation equations, with small cross diffusion effects. The aggregation term is assumed to be purely attractive, and…

偏微分方程分析 · 数学 2024-06-17 Daniel Matthes , Christian Parsch

We investigate stationary solutions of a non-local aggregation equation with degenerate power-law diffusion and bounded attractive potential in arbitrary dimensions. Compact stationary solutions are characterized and compactness…

偏微分方程分析 · 数学 2017-01-25 Gunnar Kaib

We study existence and long-time behavior of weak solutions to a thin-film equation with a confinement potential and a second-order degenerate diffusion term. It is known that in absence of second order effects, solutions for general…

偏微分方程分析 · 数学 2025-05-14 Christian Parsch

We investigate a Poisson-Nernst-Planck type system in three spatial dimensions where the strength of the electric drift depends on a possibly small parameter and the particles are assumed to diffuse quadratically. On grounds of the global…

偏微分方程分析 · 数学 2015-10-23 Jonathan Zinsl

We consider a Keller-Segel model with non-linear porous medium type diffusion and nonlocal attractive power law interaction, focusing on potentials that are less singular than Newtonian interaction. Here, the nonlinear diffusion is chosen…

偏微分方程分析 · 数学 2023-02-21 Shen Bian

This paper presents existence and uniqueness results for a class of parabolic systems with non linear diffusion and nonlocal interaction. These systems can be viewed as regular perturbations of Wasserstein gradient flows. Here we extend…

偏微分方程分析 · 数学 2015-06-02 Maxime Laborde
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