Homoclinic solutions for fourth order traveling wave equations

Details Homoclinic solutions for fourth order traveling wave equations Homoclinic solutions for fourth order traveling wave equations

2009-04-21

arxiv.org/abs/0904.3147v2

Mathematics

Analysis of PDEs

Submitted

Scientific paper

We consider homoclinic solutions of fourth order equations $$ u^{""} + \beta^2 u^{"} + V_u (u)=0 {in} \R ,$$ where $V(u)$ is either the suspension bridge type $V(u)=e^u-1-u$ or Swift-Hohenberg type $ V(u)= {1/4}(u^2-1)^2$. For the suspension bridge type equation, we prove existence of a homoclinic solution for {\em all} $ \beta \in (0, \beta_*)$ where $ \beta_{*}= 0.7427...$. For the Swift-Hohenberg type equation, we prove existence of a homoclinic solution for each $\beta \in (0, \beta_{*})$, where $\beta_{*}=0.9342...$. This partially solves a conjecture of Chen--McKenna \cite{YCM1}.

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