Title
Approximating travelling waves by equilibria of non local equations
Abstract
We consider an evolution equation of parabolic type in R having a travelling wave solution. We study the effects on the dynamics of an appropriate change of variables which transforms the equation into a non-local evolution one having a travelling wave solution with zero speed of propagation with exactly the same profile as the original one. This procedure allows us to compute simultaneously the travelling wave profile and its propagation speed avoiding moving meshes, as we illustrate with several numerical examples. We analyze the relation of the new equation with the original one in the entire real line. We also analyze the behavior of the non-local problem in a bounded interval with appropriate boundary conditions. We show that it has a unique stationary solution which approaches the traveling wave as the interval gets larger and larger and that is asymptotically stable for large enough intervals.
Year
DOI
Venue
2012
10.3233/ASY-2011-1088
ASYMPTOTIC ANALYSIS
Keywords
Field
DocType
travelling waves,reaction-diffusion equations,implicit coordinate-change,non-local equation,asymptotic stability,numerical approximation
Change of variables,Boundary value problem,Traveling wave,Polygon mesh,Real line,Mathematical analysis,Mathematics,Bounded function,Stability theory,Parabola
Journal
Volume
Issue
ISSN
78
3
0921-7134
Citations 
PageRank 
References 
0
0.34
3
Authors
3
Name
Order
Citations
PageRank
JOSÉ M. ARRIETA121.93
María López-Fernández29115.03
Enrique Zuazua320647.93