Computation and Stability of Traveling Waves in Second Order Evolution Equations

The topic of this paper are nonlinear traveling waves occuring in a system of damped waves equations in one space variable. We extend the freezing method from first to second order equations in time. When applied to a Cauchy problem, this method generates a comoving frame in which the solution becom...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 2017-04
Main Authors: Wolf-Jürgen Beyn, Otten, Denny, Rottmann-Matthes, Jens
Format: Article
Language:English
Subjects:
Cauchy problems
Freezing
Hyperbolic systems
Mathematical analysis
Stability
Traveling waves
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The topic of this paper are nonlinear traveling waves occuring in a system of damped waves equations in one space variable. We extend the freezing method from first to second order equations in time. When applied to a Cauchy problem, this method generates a comoving frame in which the solution becomes stationary. In addition it generates an algebraic variable which converges to the speed of the wave, provided the original wave satisfies certain spectral conditions and initial perturbations are sufficiently small. We develop a rigorous theory for this effect by recourse to some recent nonlinear stability results for waves in first order hyperbolic systems. Numerical computations illustrate the theory for examples of Nagumo and FitzHugh-Nagumo type.
ISSN:2331-8422