Discrete breather and its stability in a general discrete nonlinear Schrodinger equation with disorder

被引：13

作者：

Bai, Xiao-Dong ^{[1
]}

Xue, Ju-Kui ^{[1
]}

机构：

[1] NW Normal Univ, Coll Phys & Elect Engn, Key Lab Atom & Mol Phys & Funct Mat Gansu Prov, Lanzhou 730070, Peoples R China

来源：

PHYSICAL REVIEW E | 2012年 / 86卷 / 06期

基金：

中国国家自然科学基金;

关键词：

SOLITONS; LATTICES; MODES;

D O I：

10.1103/PhysRevE.86.066605

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：

By considering a general discrete nonlinear Schrodinger model with arbitrary values of nonlinearity power and disorder, the existence and stability of a discrete breather (DB) in a general nonlinear lattice are discussed. It is found that nonlinearity and disorder play important roles in determining the existence and stability of the DB. Nonlinearity (expressed by the interparticle interaction) and disorder can enhance the stability of the DB. Remarkably, we find that the DB is most stable when the nonlinearity power is equal to a critical value. The effects of nonlinearity, nonlinearity power, and disorder on the stability of the DB are strongly coupled. DOI: 10.1103/PhysRevE.86.066605

引用

页数：6

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