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Persistent Homoclinic Orbits for Nonlinear Schroedinger Equation Under Singular Perturbation

Yanguang Charles Li

math.AParXiv:math/0106194

Abstract

Existence of homoclinic orbits in the cubic nonlinear Schrödinger equation under singular perturbations is proved. Emphasis is placed upon the regularity of the semigroup e t x2 at = 0. This article is a substantial generalization of LMSW96, and motivated by the effort of Dr. Zeng Zen00a Zen00b. The mistake of Zeng in Zen00b is corrected with a normal form transform approach. Both one and two unstable modes cases are investigated.

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