Stable blowup for supercritical wave maps into perturbed spheres

Abstract

We consider wave maps from $(1+d)$-dimensional Minkowski space, $d\ge 3$, into rotationally symmetric manifolds which arise from small perturbations of the sphere ${\mathbb{S}}^d$. We prove the existence of co-rotational self-similar finite time blowup solutions with smooth blowup profiles. Furthermore, we show the nonlinear asymptotic stability of these solutions under suitably small co-rotational perturbations on the full space.