Multi-bump standing waves with critical frequency for nonlinear Schrodinger equations

Abstract

We glue together standing wave solutions concentrating around critical points of the potential V with different energy scales. We devise a hybrid method using simultaneously a Lyapunov-Schmidt reduction method and a variational method to glue together standing waves concentrating on local minimum points which possibly have no corresponding limiting equations and those concentrating on general critical points which converge to solutions of corresponding limiting problems satisfying a non-degeneracy condition. (C) 2010 Elsevier Masson SAS. All rights reserved.