MODULATIONAL INSTABILITIES AND DARK SOLITONS IN A GENERALIZED NONLINEAR SCHRODINGER-EQUATION

被引：37

作者：

KIVSHAR, YS ^{[1
]}

ANDERSON, D ^{[1
]}

LISAK, M ^{[1
]}

机构：

[1] CHALMERS UNIV TECHNOL,INST ELECTROMAGNET FIELD THEORY,S-41296 GOTHENBURG,SWEDEN

来源：

PHYSICA SCRIPTA | 1993年 / 47卷 / 05期

关键词：

D O I：

10.1088/0031-8949/47/5/006

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The generalized nonlinear Schrodinger equation with the nonlinear term of a general form is considered. In particular cases this equation covers a saturable nonlinearity as well as higher-order nonlinearities. Modulational instability is investigated, and the possibility of dark soliton propagation is analyzed. It is shown that in the small-amplitude limit the generalized dark solitons are stable, and they are described by the Korteweg-de Vries equation. The condition to create anti-dark solitons is also formulated.

引用

页码：679 / 681

页数：3

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