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We introduce coarse-grained hydrodynamic equations of motion for diffusion-annihilation system with a power-law long-range interaction. By taking into account fluctuations of the conserved order parameter - charge density - we derive an…

凝聚态物理 · 物理学 2009-10-28 Valeriy V. Ginzburg , Leo Radzihovsky , Noel A. Clark

We consider an autonomous system of partial differential equations for one-dimensional distributed medium with periodic boundary conditions. Dynamics in time consists of alternating birth and death of patterns with spatial phases…

混沌动力学 · 物理学 2015-06-18 Vyacheslav P. Kruglov , Sergey P. Kuznetsov , Arkady Pikovsky

This work is devoted to the study of the asymptotic behavior of nonautonomous reaction-diffusion equations in Dumbbell domains $\Omega_{\varepsilon} \subset \mathbb{R}^{N}$. Each $\Omega_{\varepsilon}$ is the union of a fixed open set…

偏微分方程分析 · 数学 2020-12-15 Maykel Belluzi , Tomás Caraballo , Marcelo J. D. Nascimento , Karina Schiabel

We consider a two-dimensional model of double-diffusive convection and its time discretisation using a second-order scheme which treat the nonlinear term explicitly (backward differentiation formula with a one-leg method). Uniform bounds on…

数值分析 · 数学 2014-02-28 Florentina Tone , Xiaoming Wang , Djoko Wirosoetisno

We consider a mathematical model coupling the Cahn-Hilliard system for phase separation with an additional equation describing the diffusion process of a chemical quantity whose concentration influences the physical process. The main…

偏微分方程分析 · 数学 2025-11-17 Giulio Schimperna , Antonio Segatti

Global existence of very weak solutions to a non-local diffusion-advection-reaction equation is established under no-flux boundary conditions in higher dimensions. The equation features degenerate myopic diffusion and nonlocal adhesion and…

偏微分方程分析 · 数学 2024-10-18 Maria Eckardt , Anna Zhigun

We analyze asymptotic scaling properties of a model class of anomalous reaction-diffusion (ARD) equations. Numerical experiments show that solutions to these have, for large $t$, well defined scaling properties. We suggest a general…

数学物理 · 物理学 2015-06-26 G. Gaeta , R. Mancinelli

A semilinear singularly perturbed reaction-diffusion equation with Dirichlet boundary conditions is considered in a convex unbounded sector. The singular perturbation parameter is arbitrarily small, and the "reduced equation" may have…

偏微分方程分析 · 数学 2009-09-27 R. Bruce Kellogg , Natalia Kopteva

We investigate the non-equilibrium character of self-propelled particles through the study of the linear response of the active Ornstein-Uhlenbeck particle (AOUP) model. We express the linear response in terms of correlations computed in…

统计力学 · 物理学 2020-12-14 Lorenzo Caprini , Andrea Puglisi , Alessandro Sarracino

The wave equation with energy critical sources and nonlinear damping defined on a 3D bounded domain is considered. It is shown that the resulting dynamical system admits a global attractor. Under the additional assumption of strong…

动力系统 · 数学 2025-11-07 Irena Lasiecka , Vando Narciso

In this work, we study global existence, eventual smoothness and asymptotical behavior of positive solutions for a two-species chemotaxis consumption model in a bounded smooth but not necessarily convex domain $\Omega\subset \mathbb{R}^n…

偏微分方程分析 · 数学 2023-01-10 Guoqiang Ren , Tian Xiang

This paper presents estimates of the convergence of asymptotic dynamics of reaction-diffusion equations with nonlinear boundary conditions. We show how the convergence of the global attractors can be affected by the variations of diffusion…

偏微分方程分析 · 数学 2024-05-15 Flank D. M. Bezerra , Marcone C. Pereira , Leonardo Pires

In this paper we study the long time asymptotic behavior for a class of diffusion-aggregation equations. Most results except the ones in Section 3.3 concern radial solutions. The main tools used in the paper are maximum-principle type…

偏微分方程分析 · 数学 2011-12-21 Yao Yao

In this paper we study the long-time behavior of a nonlocal Cahn-Hilliard system with singular potential, degenerate mobility, and a reaction term. In particular, we prove the existence of a global attractor with finite fractal dimension,…

偏微分方程分析 · 数学 2026-04-10 Annalisa Iuorio , Stefano Melchionna

This paper addresses the long-time behavior of gradient flows of non convex functionals in Hilbert spaces. Exploiting the notion of generalized semiflows by J. M. Ball, we provide some sufficient conditions for the existence of a global…

偏微分方程分析 · 数学 2007-06-01 Riccarda Rossi , Antonio Segatti , Ulisse Stefanelli

We propose certain approach of solving two-dimensional non-stationary and stationary advection-diffusion-reaction boundary value problems through their reduction to the set of corresponding one-dimensional problems. This method leverages…

数值分析 · 数学 2024-11-19 R. Drebotiy , H. Shynkarenko

We prove the existence of a global attractor for the Newton-Boussinesq equation defined in a two-dimensional channel. The asymptotic compactness of the equation is derived by the uniform estimates on the tails of solutions. We also…

数学物理 · 物理学 2009-01-08 Guglielmo Fucci , Bixiang Wang , Preeti Singh

The long-time behavior of the solutions for a non-isothermal model in superfluidity is investigated. The model describes the transition between the normal and the superfluid phase in liquid 4He by means of a non-linear differential system,…

数学物理 · 物理学 2011-02-08 Alessia Berti , Valeria Berti , Ivana Bochicchio

The global asymptotic behavior of a stochastic Hopfield neural network model (HNNM) with delays is explored by studying the existence and structure of random attractors. It is first proved that the trajectory field of the stochastic delayed…

动力系统 · 数学 2023-02-14 Wenjie Hu , Quanxin Zhu , Peter E. Kloeden

We consider the asymptotic behavior of the global solutions to the initial value problem for the generalized KdV-Burgers equation. It is known that the solution to this problem converges to a self-similar solution to the Burgers equation…

偏微分方程分析 · 数学 2025-04-03 Ikki Fukuda