MODULATIONAL INSTABILITIES IN THE DISCRETE DEFORMABLE NONLINEAR SCHRODINGER-EQUATION

被引：68

作者：

KIVSHAR, YS ^{[1
]}

SALERNO, M ^{[1
]}

机构：

[1] UNIV SALERNO,DEPT THEORET PHYS,I-84100 SALERNO,ITALY

来源：

PHYSICAL REVIEW E | 1994年 / 49卷 / 04期

关键词：

D O I：

10.1103/PhysRevE.49.3543

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We study analytically and numerically modulational instability for the discrete deformable nonlinear Schrodinger (NLS) equation which represents a natural link between the properties of the integrable Ablowitz-Ladik model and the nonintegrable discrete NLS equation. We show how different discretizations of the nonlinear interaction change modulational instability in the lattice and, correspondingly, conditions for localized modes to exist.

引用

页码：3543 / 3546

页数：4

共 25 条

[1]

ABLOWITZ MJ, 1976, STUD APPL MATH, V55, P213

[2] DISINTEGRATION OF WAVE TRAINS ON DEEP WATER .1. THEORY [J].