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This paper introduces a stabilized finite element scheme for the Cahn--Hilliard cross-diffusion model, which is characterized by strongly coupled mobilities, nonlinear diffusion, and complex cross-diffusion terms. These features pose…

数值分析 · 数学 2025-05-08 Boyi Wang , Naresh Kumar , Jinyun Yuan

This work introduces a new class of cross-diffusion systems for studying overcrowding dispersal of two species. The approach, based on proximal minimization energy through a minimum flow process, offers a potential generalization of…

偏微分方程分析 · 数学 2024-05-27 Noureddine Igbida

In this paper, we study the Cauchy problem of a time-dependent drift-diffusion-Poisson system for semiconductors. Existence and uniqueness of global weak solutions are proven for the system with a higher-order nonlinear…

偏微分方程分析 · 数学 2024-08-21 Hao Wu , Jie Jiang

Diffusion models can generate a variety of high-quality images by modeling complex data distributions. Trained diffusion models can also be very effective image priors for solving inverse problems. Most of the existing diffusion-based…

图像与视频处理 · 电气工程与系统科学 2025-09-01 Nebiyou Yismaw , Ulugbek S. Kamilov , M. Salman Asif

In this paper, we study the Cauchy's problem of the compressible Euler system with damping and establish the global-in-time well-posedness in $L^p$-type critical Besov spaces for $1\leq p<2$. To achieve it, a new product estimate is…

偏微分方程分析 · 数学 2026-02-27 Jianzhong Zhang , Ying Sui , Xiliang Li

We prove the existence of solutions of a cross-diffusion parabolic population problem. The system of partial differential equations is deduced as the limit equations satisfied by the densities corresponding to an interacting particles…

偏微分方程分析 · 数学 2024-01-29 Gonzalo Galiano , Virginia Selgas

A problem of the crossover from percolation to diffusion transport is considered. A general scaling theory is proposed. It introduces phenomenologically four critical exponents which are connected by two equations. One exponent is…

凝聚态物理 · 物理学 2009-10-31 D. N. Tsigankov , A. L. Efros

This paper investigates the Cauchy problem for the compressible pressureless Navier-Stokes system in $\mathbb{R}^d$ with $d \geq 2$. Unlike the standard isentropic compressible Navier-Stokes system, the density in the pressureless model…

偏微分方程分析 · 数学 2025-11-05 Fucai Li , Jinkai Ni , Zhipeng Zhang

This paper is concerned with reaction-diffusion-advection equations in spatially periodic media. Under an assumption of weak stability of the constant states 0 and 1, and of existence of pulsating traveling fronts connecting them, we show…

偏微分方程分析 · 数学 2026-04-14 Hongjun Guo , François Hamel , Luca Rossi

We provide a unified viewpoint on two illposedness mechanisms for dispersive equations in one spatial dimension, namely degenerate dispersion and (the failure of) the Takeuchi--Mizohata condition. Our approach is based on a robust energy-…

偏微分方程分析 · 数学 2026-05-27 In-Jee Jeong , Sung-Jin Oh

Scattering off the edge of a composite particle or finite-range interaction can precede that off its center. An effective theory treatment with pointlike particles and contact interactions must find that the scattered experimental wave is…

高能物理 - 唯象学 · 物理学 2021-06-07 Felipe J. Llanes-Estrada , Raul Roldan-Gonzalez

This article is devoted to review the known results on global well-posedness for the Cauchy problem to the Kirchhoff equation and Kirchhoff systems with small data. Similar results will be obtained for the initial-boundary value problems in…

偏微分方程分析 · 数学 2014-12-30 Tokio Matsuyama , Michael Ruzhansky

We prove the well-posedness of the Cauchy problem for the linear differential system of the form $x^{\prime}-A(t)x=f$, where $f$ is a distribution and $A$ possesses at most first-kind discontinuities together with all its derivatives…

泛函分析 · 数学 2007-10-16 Damir Kinzebulatov

We investigate the Cauchy problem to the compressible planar non-resistive magnetohydrodynamic equations with zero heat conduction. The global existence of strong solutions to such a model has been established by Li and Li (J. Differential…

偏微分方程分析 · 数学 2023-02-17 Jinkai Li , Mingjie Li , Yang Liu , Xin Zhong

The Fast Diffusion Equation (FDE) $u_t= \Delta u^m$, with $m\in (0,1)$, is an important model for singular nonlinear (density dependent) diffusive phenomena. Here, we focus on the Cauchy-Dirichlet problem posed on smooth bounded Euclidean…

偏微分方程分析 · 数学 2023-08-17 Matteo Bonforte , Alessio Figalli

We investigate the Cauchy problem and the diffusion asymptotics for a spatially inhomogeneous kinetic model associated to a nonlinear Fokker-Planck operator. We derive the global well-posedness result with instantaneous smoothness effect,…

偏微分方程分析 · 数学 2024-03-13 Francesca Anceschi , Yuzhe Zhu

This paper concerns the global-in-time evolution of a generic compressible two-fluid model in $\mathbb{R}^d$ ($d\geq3$) with the common pressure law. Due to the non-dissipative properties for densities and two different particle paths…

偏微分方程分析 · 数学 2025-02-11 Ling-Yun Shou , Jiayan Wu , Lei Yao , Yinghui Zhang

We give simple conditions implying the well-posedness of the Cauchy problem for the propagation of classical scalar fields in general (n+2)-dimensional static and spherically symmetric spacetimes. They are related to properties of the…

广义相对论与量子宇宙学 · 物理学 2013-11-05 Ricardo E. Gamboa Saraví , Marcela Sanmartino , Philippe Tchamitchian

A quasiparticle description of various condensed media is a very popular tool in study of their transport and thermodynamic properties. I present here a microscopic theory for the description of diffusion processes in two-component gas of…

统计力学 · 物理学 2009-11-07 Alexander V. Zhukov

We consider the Cauchy problem to the 3D barotropic compressible Navier-Stokes equation. We prove global well-posedness, assuming that the initial data $(\rho_0-1,u_0)$ has small norms in the critical Besov space…

偏微分方程分析 · 数学 2025-09-23 Zihua Guo , Zihao Song , Minghua Yang