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This paper is concerned with the two-dimensional chemotaxis-fluid model \begin{equation*} \begin{cases} n_t+u\cdot\nabla n=\Delta (n\phi(v))+\mu n(1-n),\\ v_t+u\cdot\nabla v=\Delta v-nv,\\ u_t+ \kappa (u\cdot\nabla) u=\Delta…

偏微分方程分析 · 数学 2025-09-23 Yansheng Ma , Peter Y. H. Pang , Yifu Wang

We derive a system with one degree of freedom that models a class of dynamical systems with strange attractors in three dimensions. This system retains all the characteristics of chaotic attractors and is expressed by a second-order…

混沌动力学 · 物理学 2025-02-26 Nicola Romanazzi

A nonautonomous periodic chemostat model with delays modelling $n$ species in competition is considered. Sufficient conditions on the coefficients and consumption functions for the species are given, for both the extinction of the species…

动力系统 · 数学 2024-03-13 Teresa Faria

We show that the attraction-repulsion chemotaxis system \begin{equation*} \begin{cases} u_t = \Delta u - \chi\nabla\cdot(u\nabla v_1) + \xi\nabla\cdot(u\nabla v_2)\\ \partial_t v_1 = \Delta v_1 - \beta v_1 + \alpha u \\ \partial_t v_2 =…

偏微分方程分析 · 数学 2021-04-01 Johannes Lankeit

The well-posedness of a chemotaxis system with indirect signal production in a two-dimensional domain is shown, all solutions being global unlike the classical Keller-Segel chemotaxis system. Nevertheless, there is a threshold value $M_c$…

偏微分方程分析 · 数学 2018-10-17 Philippe Laurençot

In this paper, we study the barotropic compressible magnetohydrodynamic equations with the shear viscosity being a positive constant and the bulk one being proportional to a power of the density in a general two-dimensional bounded simply…

偏微分方程分析 · 数学 2022-01-19 Yazhou Chen , Bin Huang , Xiaoding Shi

We discuss a resource-competition model, which takes the MacArthur's model as a platform, to unveil interesting connections with glassy features and jamming in high dimension. This model presents two qualitatively different phases: a…

无序系统与神经网络 · 物理学 2019-01-16 Ada Altieri , Silvio Franz

A class of two-species ({\it three-states}) bimolecular diffusion-limited models of classical particles with hard-core reacting and diffusing in a hypercubic lattice of arbitrary dimension is investigated. The manifolds on which the…

统计力学 · 物理学 2009-10-31 Mauro Mobilia , Pierre-Antoine Bares

This article concerns time-periodic solutions to a two-dimensional Sellers-type energy balance model coupled to the three-dimensional primitive equations via a dynamic boundary condition. It is shown that the underlying equations admit at…

偏微分方程分析 · 数学 2025-12-05 Gianmarco Del Sarto , Matthias Hieber , Filippo Palma , Tarek Zöchling

We study, in Part I of this series, boundedness and global existence of positive classical solutions to a parabolic-elliptic chemotaxis system with signal-dependent sensitivity and a logistic-type source on a bounded smooth domain…

偏微分方程分析 · 数学 2025-12-18 Le Chen , Ian Ruau , Wenxian Shen

In three space dimensions, we consider the compressible inviscid model describing the time evolution of two fluids sharing the same velocity and enjoying the algebraic pressure closure. By employing the technique of convex integration, we…

偏微分方程分析 · 数学 2019-12-24 Yang Li , Ewelina Zatorska

The low-energy limits of models with disorder are frequently described by sigma models. In two dimensions, most sigma models admit either a Wess-Zumino-Witten or a theta term. When such a term is present the model can have a stable critical…

超导电性 · 物理学 2009-10-31 Paul Fendley , Robert M. Konik

A class of periodic differential $n$-dimensional systems with patch structure with (possibly infinite) delay and nonlinear impulses is considered. These systems incorporate very general nonlinearities and impulses whose signs may vary.…

经典分析与常微分方程 · 数学 2021-11-16 Teresa Faria , Rubén Figueroa

We investigate the origin of a disagreement between the two-mode model and the exact Gross-Pitaevskii dynamics applied to double-well systems. In general this model, even in its improved version, predicts a faster dynamics and…

量子气体 · 物理学 2015-06-16 D. M. Jezek , P. Capuzzi , H. M. Cataldo

This work studies the chemotaxis-haptotaxis system $$\left\{ \begin{array}{ll} u_t= \Delta u - \chi \nabla \cdot (u\nabla v) - \xi \nabla \cdot (u\nabla w) + \mu u(1-u-w), &\qquad x\in \Omega, \, t>0, \\[1mm] v_t=\Delta v-v+u, &\qquad x\in…

偏微分方程分析 · 数学 2014-07-29 Youshan Tao

We carry out the dynamical system analysis of interacting dark energy-matter scenarios by examining the critical points and stability for not just the background level cosmological evolution, but at the level of the linear density…

宇宙学与河外天体物理 · 物理学 2021-12-30 Mohit Kumar Sharma , Sourav Sur

In this paper, we consider the wave equation with variable coefficients and boundary damping and supercritical source terms. The goal of this work is devoted to prove the local and global existence, and classify decay rate of energy…

偏微分方程分析 · 数学 2024-03-07 Tae Gab Ha

In this paper we consider a singular nonlocal viscoelastic problem with a nonlinear source term and a possible damping term. We proved that if the initial data enter into the stable set, the solution exists globally and decays to zero with…

偏微分方程分析 · 数学 2013-03-19 Wenjun Liu , Yun Sun , Gang Li

We study the stationary properties of the two-dimensional pair contact process, a nonequilibrium lattice model exhibiting a phase transition to an absorbing state with an infinite number of configurations. The critical probability and…

统计力学 · 物理学 2009-10-31 Jafferson Kamphorst Leal da Silva , Ronald Dickman

We study condensation in two-flavored, scalar QED with non-degenerate masses at finite chemical potential. The conventional formulation of the theory has a sign problem at finite density which can be solved using an exact reformulation of…

高能物理 - 格点 · 物理学 2015-01-27 Alexander Schmidt , Philippe de Forcrand , Christof Gattringer