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In this paper we consider a system of equations that describes a class of mass-conserving aggregation phenomena, including gravitational collapse and bacterial chemotaxis. In spatial dimensions strictly larger than two, and under the…

偏微分方程分析 · 数学 2009-11-10 Ignacio A. Guerra , Mark A. Peletier

We investigate the momentum-resolved spin and charge susceptibilities, as well as the chemical potential and double occupancy in the two-dimensional Hubbard model as functions of doping, temperature and interaction strength. Through these…

强关联电子 · 物理学 2023-01-03 Fedor Šimkovic , Riccardo Rossi , Michel Ferrero

A three-dimensional chemotaxis-Navier-Stokes system is considered. It is known that for all suitably regular initial data, a corresponding initial-boundary value problem admits at least one global weak solution which can be obtained as the…

偏微分方程分析 · 数学 2015-06-19 Michael Winkler

In this paper, we consider a two species chemotaxis system of parabolic-parabolic-elliptic type with Lotka-Volterra type competition terms in heterogeneous media. We first find various conditions on the parameters which guarantee the global…

偏微分方程分析 · 数学 2018-06-11 Tahir Bachar Issa , Wenxian Shen

We establish local well-posedness results for the Initial Value Problem associated to the Schr\"odinger-Debye system in dimensions $N=2, 3$ for data in $H^s\times H^{\ell}$, with $s$ and $\ell$ satisfying $\max \{0, s-1\} \le \ell \le…

偏微分方程分析 · 数学 2012-06-22 Adan J. Corcho , Filipe Oliveira , Jorge Drumond Silva

This work is devoted to the theoretical and numerical analysis of a two-species chemotaxis- Navier-Stokes system with Lotka-Volterra competitive kinetics in a bounded domain of Rd, d = 2, 3. First, we study the existence of global weak…

We study a one-dimensional parabolic PDE with degenerate diffusion and non-Lipschitz nonlinearity involving the derivative. This evolution equation arises when searching radially symmetric solutions of a chemotaxis model of…

偏微分方程分析 · 数学 2014-02-04 Alexandre Montaru

We consider generalized models on coral broadcast spawning phenomena involving diffusion, advection, chemotaxis, and reactions when egg and sperm densities are different. We prove the global-in-time existence of the regular solutions of the…

偏微分方程分析 · 数学 2019-04-16 Myeongju Chae , Kyungkeun Kang , Jihoon Lee

We study the behavior of energy levels in two dimensions for exotic atoms, i.e., when a long-range attractive potential is supplemented by a short-range interaction, and compare the results with these of the one- and three-dimensional…

原子物理 · 物理学 2011-05-12 Combescure Monique , Fayard Claude , Khare Avinash , Richard Jean-Marc

This paper deals with the following attraction-repulsion chemotaxis system with nonlocal logistic source and sublinear productions \[ \left\{ \begin{array}{rrll} &&u_t = d_1 \Delta u-\chi \nabla\cdot(u^k \nabla v)+\xi \nabla\cdot(u^k \nabla…

偏微分方程分析 · 数学 2025-10-24 Gnanasekaran Shanmugasundaram , Nithyadevi Nagarajan

In this paper we study a broad class of non-local advection-diffusion models describing the behaviour of an arbitrary number of interacting species, each moving in response to the non-local presence of others. Our model allows for different…

偏微分方程分析 · 数学 2024-06-17 Valeria Giunta , Thomas Hillen , Mark Lewis , Jonathan Potts

This paper is devoted to initial-boundary value problem of an extensible beam equation with degenerate nonlocal energy damping in $\Omega\subset\mathbb{R}^n$: $u_{tt}-\kappa\Delta u+\Delta^2u-\gamma(\Vert \Delta u\Vert^2+\Vert…

偏微分方程分析 · 数学 2023-04-28 Senlin Yan , Chengkui Zhong

This article investigates the effect for random pinning models of long range power-law decaying correlations in the environment. For a particular type of environment based on a renewal construction, we are able to sharply describe the phase…

概率论 · 数学 2025-08-15 Quentin Berger , Hubert Lacoin

We consider two dimensional Keller-Segel equations coupled with the Navier-Stokes equations modelled by Tuval et al.[32]. Assuming that the chemotactic sensitivity and oxygen consumption rate are nondecreasing and differentiable, we prove…

偏微分方程分析 · 数学 2015-09-07 Myeongju Chae , Kyungkeun Kang , Jihoon Lee , Ki-Ahm Lee

We investigate the 2D combustion model with Dirichlet boundary conditions and slip boundary conditions in bounded domains. The global existence of weak and strong solutions and the uniqueness of strong solutions are obtained provided the…

偏微分方程分析 · 数学 2023-01-10 Jiawen Zhang

We consider the long time behavior of the solutions of the coupled Schr\"odinger-KdV systems \begin{eqnarray*} \left\{ \begin{array}{llll}i\partial_tu+\partial^2_xu=\alpha uv+\beta u|u|^2,\hskip30pt (x,t)\in \mathbb{R}\times…

偏微分方程分析 · 数学 2025-03-25 Felipe Linares , Dequin Zhou

We consider the chemotaxis system with indirect signal production in the whole space, \begin{equation}\label{abst:p}\tag{$\star$} \begin{cases} u_t = \Delta u - \nabla \cdot (u\nabla v),\\ 0 = \Delta v + w,\\ w_t = \Delta w + u \end{cases}…

偏微分方程分析 · 数学 2026-01-30 Yuri Soga

Given a matrix model, by combining the Schwinger-Dyson equations with positivity constraints on its solutions, in the large $N$ limit one is able to obtain explicit and numerical bounds on its moments. This technique is known as…

数学物理 · 物理学 2025-02-27 Masoud Khalkhali , Nathan Pagliaroli , Andrei Parfeni , Brayden Smith

We study the coexistence of phases in a two--species model whose free energy is given by the scaling limit of a system with long range interactions (Kac potentials) which are attractive between particles of the same species and repulsive…

统计力学 · 物理学 2009-11-07 E. A. Carlen , M. C. Carvalho , R. Esposito , J. L. Lebowitz , R. Marra

In this paper, we study the initial boundary value problem for the nonlinear wave equation with combined power-type nonlinearities with variable coefficients. The global behavior of the solutions with non-positive and sub-critical energy is…

偏微分方程分析 · 数学 2023-10-31 Milena Dimova , Natalia Kolkovska , Nikolai Kutev