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相关论文: Self-Replication of Mesa Patterns in Reaction-Diff…

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Diffusion models have become the de facto framework for generating new datasets. The core of these models lies in the ability to reverse a diffusion process in time. The goal of this manuscript is to explain, from a PDE perspective, how…

概率论 · 数学 2025-01-29 Fei Cao , Kimball Johnston , Thomas Laurent , Justin Le , Sébastien Motsch

We investigate the convergence of spatial discretizations for reaction-diffusion systems with mass-action law satisfying a detailed balance condition. Considering systems on the d-dimensional torus, we construct appropriate space-discrete…

偏微分方程分析 · 数学 2025-04-10 Georg Heinze , Alexander Mielke , Artur Stephan

Spatial and temporal pattern formation in reaction-diffusion systems is typically studied with two or more equations, as scalar reaction-diffusion equations confined to convex domains do not admit stable inhomogeneous states in time or…

斑图形成与孤子 · 物理学 2026-05-07 N. Mahashri , Andrew L. Krause , M. Chandru , Thomas E. Woolley

We study a reaction-diffusion system on the real line, where the reactions of the species are given by one reversible reaction according to the mass-action law. We describe different positive limits at both sides of infinity and investigate…

偏微分方程分析 · 数学 2023-04-07 Alexander Mielke , Stefanie Schindler

We study the effect of confinement on diffusion limited bimolecular reactions within a lattice model where a small number of reactants diffuse amongst a much larger number of inert particles. When the number of inert particles is held…

软凝聚态物质 · 物理学 2013-05-29 Jeremy D. Schmit , Ercan Kamber , Jané Kondev

We study a critical behavior for the eigenvalue statistics in the two-matrix model in the quartic/quadratic case. For certain parameters, the eigenvalue distribution for one of the matrices has a limit that vanishes with an exponent 1/2 in…

数学物理 · 物理学 2019-12-19 Maurice Duits , Dries Geudens

Reactio-nonlocal diffusion equations model nonlocal transport and anomalous diffusion by replacing the Laplacian with a fractional power, capturing diffusion mechanisms beyond Brownian motion. We primarily study the semilinear problem \[…

偏微分方程分析 · 数学 2026-01-30 Pu Yuan , Paul A. Zegeling

Self-organization in natural and engineered systems causes the emergence of ordered spatio-temporal motifs. In presence of diffusive species, Turing theory has been widely used to understand the formation of such patterns on continuous…

统计力学 · 物理学 2025-10-22 Marie Dorchain , Riccardo Muolo , Timoteo Carletti

This article investigates the non-stationary reaction-diffusion-advection equation, emphasizing solutions with internal layers and the associated inverse problems. We examine a nonlinear singularly perturbed partial differential equation…

数值分析 · 数学 2025-02-06 Dmitrii Chaikovskii , Ye Zhang , Aleksei Liubavin

We propose a model for cell polarization as a response to an external signal which results in a system of PDEs for different variants of a protein on the cell surface and interior respectively. We study stationary states of this model in…

偏微分方程分析 · 数学 2019-02-18 Barbara Niethammer , Matthias Röger , Juan J. L. Velázquez

The classical models for irreversible diffusion-influenced reactions can be derived by introducing absorbing boundary conditions to over-damped continuous Brownian motion (BM) theory. As there is a clear corresponding stochastic process,…

统计力学 · 物理学 2016-10-13 Mauricio J. Del Razo , Hong Qian

Motivated by models of signaling pathways in B lymphocytes, which have extremely large nuclei, we study the question of how reaction-diffusion equations in thin $2D$ domains may be approximated by diffusion equations in regions of smaller…

偏微分方程分析 · 数学 2020-07-17 Adam Bobrowski

The Brusselator reaction-diffusion model is a paradigm for the understanding of dissipative structures in systems out of equilibrium. In the first part of this paper, we investigate the formation of stationary localized structures in the…

We study reaction-diffusion systems beyond the Markovian approximation to take into account the effect of memory on the formation of spatio-temporal patterns. Using a non-Markovian Brusselator model as a paradigmatic example, we show how to…

斑图形成与孤子 · 物理学 2019-12-04 Reza Torabi , Jörn Davidsen

This paper investigates the Keller-Segel model with quadratic cellular diffusion over a disk in $\mathbb R^2$ with a focus on the formation of its nontrivial patterns. We obtain explicit formulas of radially symmetric stationary solutions…

偏微分方程分析 · 数学 2019-11-07 Lin Chen , Fanze Kong , Qi Wang

We present three examples of delayed bifurcations for spike solutions of reaction-diffusion systems. The delay effect results as the system passes slowly from a stable to an unstable regime, and was previously analysed in the context of…

斑图形成与孤子 · 物理学 2015-06-18 Justin C. Tzou , Michael J. Ward , Theodore Kolokolnikov

We consider a single-species diffusion-limited annihilation reaction with reactants confined to a two-dimensional surface with one arbitrarily large dimension and the other comparable in size to interparticle distances. This situation could…

生物大分子 · 定量生物学 2015-03-20 Aleksandr Kivenson , Michael F. Hagan

In this paper, we are concerned with the state feedback stabilization of ODE-PDE cascade systems governed by a linear ordinary differential equation and the 1-d reaction-diffusion equation posed on a bounded interval. In contrast to the…

偏微分方程分析 · 数学 2018-01-04 Habib Ayadi

Multiagent systems grapple with partial observability (PO), and the decentralized POMDP (Dec-POMDP) model highlights the fundamental nature of this challenge. Whereas recent approaches to addressing PO have appealed to deep learning models,…

机器学习 · 计算机科学 2025-02-21 Tonghan Wang , Heng Dong , Yanchen Jiang , David C. Parkes , Milind Tambe

The reversible reactions like A+B <-> C in the many-component diffusive system affect the diffusive properties of the constituents. The effective conjugation of irreversible processes of different dimensionality takes place due to the…

其他凝聚态物理 · 物理学 2007-05-23 Serge Shpyrko , Vladimir M. Sysoev