Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4612291 | Journal of Differential Equations | 2007 | 31 Pages |
Abstract
In this paper, one-dimensional (1D) nonlinear Schrödinger equationiut−uxx+mu+|u|4u=0iut−uxx+mu+|u|4u=0 with the periodic boundary condition is considered. It is proved that for each given constant potential m and each prescribed integer N>1N>1, the equation admits a Whitney smooth family of small amplitude, time quasi-periodic solutions with N Diophantine frequencies. The proof is based on a partial Birkhoff normal form reduction and an improved KAM method.
Related Topics
Physical Sciences and Engineering
Mathematics
Analysis
Authors
Jiansheng Geng, Yingfei Yi,