RESONANT SOLITON-IMPURITY INTERACTIONS

被引：141

作者：

KIVSHAR, YS

ZHANG, F

VAZQUEZ, L

机构：

[1] Departamento de Física Tearica i, Facultad de Ciencias Fisicas, Universidad Complutense

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.67.1177

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We describe a new type of soliton-impurity interaction and demonstrate that the soliton can be totally reflected by an attractive impurity if its initial velocity lies in certain resonance "windows." This effect has an analogy with the resonance phenomena in kink-antikink collisions [Campbell, Schonfeld, and Wingate, Physica (Amsterdam) 9D, 1 (1983)], and it can be explained by a resonant energy exchange between the soliton and the impurity mode. Taking the sine-Gordon and phi-4 models as examples, we find a number of resonance windows by numerical simulations and develop a collective-coordinate approach to describe the effect analytically.

引用

页码：1177 / 1180

页数：4