Random data Cauchy theory for supercritical wave equations II : A global existence result

Abstract

We prove that the subquartic wave equation on the three dimensional ball $\Theta$, with Dirichlet boundary conditions admits global strong solutions for a large set of random supercritical initial data in ${\cap }_{s<1/2}{H}^s(\Theta )$. We obtain this result as a consequence of a general random data Cauchy theory for supercritical wave equations developed in our previous work \cite{BT2} and invariant measure considerations which allow us to obtain also precise large time dynamical informations on our solutions.

Cited by in corpus (1)

• Random data Cauchy theory for supercritical wave equations I: Local theory