DIRECT APPROACH FOR SOLITON PERTURBATIONS BASED ON THE GREEN'S FUNCTION

• 来源期刊: 中国物理（英文版）
• 学科: 物理学
• 关键词: soliton theory soliton perturbation
• 年，卷（期）: 2001,（7）
• 所属期刊栏目: GENERAL
• 页码范围: 594-598
• 页数: 5页
• 分类号: O4
• 语种: 英文

摘要

A direct approach has been developed for soliton perturbations based on the Green's function. We first linearized the soliton equation, and then derived the Green's function corresponding to approximation equations of different orders. Finally, we obtained the effects of perturbation on a soliton, namely both the slow time dependence of the soliton parameters and the corrections up to the second-order approximation. The higher-order effects can also be obtained in the same way.