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We examine the existence and stability of frozen waves in diblock copolymers with local conservation of the order parameter, which are described by the modified Cahn--Hilliard model. It is shown that a range of stable waves exists and each…

介观与纳米尺度物理 · 物理学 2015-06-15 E. S. Benilov , W. T. Lee , R. O. Sedakov

This paper is concerned with the stability of standing waves for the mass-critical Hartree equation with a focusing perturbation by the variational method. The profile decomposition theory is employed to prove the attainability of the cross…

偏微分方程分析 · 数学 2026-03-27 Guoyi Fu , Shanshan Fu , Xiaoguang Li , Jian Zhang , Shihui Zhu

We establish spectral, linear, and nonlinear stability of the vanishing and slow-moving travelling waves that arise as time asymptotic solutions to the Fisher-Stefan equation. Nonlinear stability is in terms of the limiting equations that…

偏微分方程分析 · 数学 2024-03-18 T. T. H. Bui , P. van Heijster , R. Marangell

We analyze travelling wave (TW) solutions for nonlinear systems consisting of an ODE coupled to a degenerate PDE with a diffusion coefficient that vanishes as the solution tends to zero and blows up as it approaches its maximum value.…

偏微分方程分析 · 数学 2022-02-17 Koondanibha Mitra , Jack M. Hughes , Stefanie Sonner , Hermann J. Eberl , Jack D. Dockery

We prove the existence of solitary wave solutions to the quasilinear Benney system $$iu_{t}+u_{xx}=a|u|^pu+uv,\quad v_t+f(v)_x=(|u|^2)_x$$ where $f(v)=-\gamma v^3$, $-1<p<+\infty$ and $a,\gamma>0$. We establish, in particular, the existence…

偏微分方程分析 · 数学 2014-03-04 João-Paulo Dias , Mário Figueira , Filipe Oliveira

We study the steady uniphase and multiphase solutions of the discretized nonlinear damped wave equation.Conditions for the stability abd instability of the steady solutions are given;in the instability case the linear stable and unstable…

偏微分方程分析 · 数学 2007-05-23 S. Birauas , D. Opris

We study a Klein-Gordon-Maxwell system, in a bounded spatial domain, under Neumann boundary conditions on the electric potential. We allow a nonconstant coupling coefficient. For sufficiently small data, we find infinitely many standing…

偏微分方程分析 · 数学 2019-12-03 Monica Lazzo , Lorenzo Pisani

In this paper, we investigate the stabilization of a locally coupled wave equations with local viscoelastic damping of past history type acting only in one equation via non smooth coefficients. First, using a general criteria of…

偏微分方程分析 · 数学 2021-05-12 Mohammad Akil , Haidar Badawi , Serge Nicaise , Ali Wehbe

This article is concerned with the mathematical analysis of a class of a nonlinear fractional Schrodinger equations with a general Hartree-type integrand. We prove existence and uniqueness of global-in-time solutions to the associated…

偏微分方程分析 · 数学 2013-07-23 Y. Cho , M. M. Fall , H. Hajaiej , P. A. Markowich , S. Trabelsi

We study the existence of standing waves for the following weakly coupled system of two Schr\"odinger equations in $\mathbb{R}^N$, $N=2,3$, \[ \begin{cases} i \hslash \partial_{t}\psi_{1}=-\frac{\hslash^2}{2m_{1}}\Delta \psi_{1}+…

偏微分方程分析 · 数学 2024-02-16 Benedetta Pellacci , Angela Pistoia , Giusi Vaira , Gianmaria Verzini

In this paper we investigate the existence of solutions in $H^1(R^N) \times H^1(R^N)$ for nonlinear Schr\"odinger systems of the form \[ \left\{ \begin{aligned} -\Delta u_1 &= \lambda_1 u_1 + \mu_1 |u_1|^{p_1 -2}u_1 + r_1\beta…

偏微分方程分析 · 数学 2016-03-01 Tianxiang Gou , Louis Jeanjean

We study by a combination of numerical and analytical Evans function techniques the stability of solitary wave solutions of the St. Venant equations for viscous shallow-water flow down an incline, and related models. Our main result is to…

偏微分方程分析 · 数学 2015-05-19 Blake Barker , Mathew A. Johnson , L. Miguel Rodrigues , Kevin Zumbrun

In the work of Colliander et al. (2010), a minimal lattice model was constructed describing the transfer of energy to high frequencies in the defocusing nonlinear Schr\"odinger equation. In the present work, we present a systematic study of…

斑图形成与孤子 · 物理学 2024-07-25 Ross Parker , Pierre Germain , Jesús Cuevas-Maraver , Alejandro Aceves , P. G. Kevrekidis

We investigate the generation of standing waves in the model provided by the inhomogeneous telegraph equation under different forcing conditions. We show that sustained standing waves arise only for a specific forcing that is spatially…

经典物理 · 物理学 2026-04-21 José Francisco Pérez-Barragán

In this paper we consider the existence of standing waves for a coupled system of $k$ equations with Lotka-Volterra type interaction. We prove the existence of a standing wave solution with all nontrivial components satisfying a prescribed…

偏微分方程分析 · 数学 2024-11-14 Sabrina Caputo , Giusi Vaira

Orbital stability property for weakly coupled nonlinear Schr\"odinger equations is investigated. Different families of orbitally stable standing waves solutions will be found, generated by different classes of solutions of the associated…

偏微分方程分析 · 数学 2009-10-26 Liliane Maia , Eugenio Montefusco , Benedetta Pellacci

In this paper we consider a system coupling a wave equation with a heat equation through its boundary conditions. The existence of a small parameter in the heat equation, as a factor multiplying the time derivative, implies the existence of…

偏微分方程分析 · 数学 2023-06-06 Gonzalo Arias , Eduardo Cerpa , Swann Marx

This paper investigates the stability of traveling wave solutions to the free boundary Euler equations with a submerged point vortex. We prove that sufficiently small-amplitude waves with small enough vortex strength are conditionally…

偏微分方程分析 · 数学 2019-07-30 Kristoffer Varholm , Erik Wahlén , Samuel Walsh

A model derived in [14] for n near-parallel vortex filaments in a three dimensional fluid region takes into consideration the pairwise interaction between the filaments along with an approximation for motion by self-induction. The same…

动力系统 · 数学 2016-08-22 W. Craig , C. Garcia-Azpeitia , C-R. Yang

We review asymptotic stability of solitary waves for nonlinear dispersive equations set on the line. Our focus is threefold: first, the nonlinear Schrodinger equation; second, the notion of full asymptotic stability (which states that…

偏微分方程分析 · 数学 2024-10-08 Pierre Germain