A vector field method on the distorted Fourier side and decay for wave equations with potentials
Abstract
We study the Cauchy problem for the onedimensional wave equation with an inverse square potential. We derive dispersive estimates, energy estimates, and estimates involving the scaling vector field, where the latter are obtained by employing a vector field method on the "distorted" Fourier side. In addition, we prove local energy decay estimates. Our results have immediate applications in the context of geometric evolution problems. The theory developed in this paper is fundamental for the proof of the codimension 1 stability of the catenoid under the vanishing mean curvature flow in Minkowski space.
 Publication:

arXiv eprints
 Pub Date:
 July 2013
 DOI:
 10.48550/arXiv.1307.2392
 arXiv:
 arXiv:1307.2392
 Bibcode:
 2013arXiv1307.2392D
 Keywords:

 Mathematics  Analysis of PDEs;
 Mathematical Physics;
 35L05
 EPrint:
 74 pages