Bright and dark small amplitude nonlinear localized modes in a quantum one-dimensional Klein-Gordon chain  

作　　者：刘洋 唐翌 

机构地区：[1]Department of Physics, Xiangtan University

出　　处：《Chinese Physics B》2008年第10期3841-3846,共6页中国物理B（英文版）

基　　金：Project supported by the Key Project of Hunan Provincial Educational Department of China (Grant No 04A058)

摘　　要：By means of the Glauber＇s coherent state method combined with multiple-scale method, this paper investigates the localized modes in a quantum one-dimensional Klein-Gordon chain and finds that the equation of motion of annihilation operator is reduced to the nonlinear Schroedinger equation. Interestingly, the model can support both bright and dark small amplitude travelling and non-travelling nonlinear localized modes in different parameter spaces.By means of the Glauber＇s coherent state method combined with multiple-scale method, this paper investigates the localized modes in a quantum one-dimensional Klein-Gordon chain and finds that the equation of motion of annihilation operator is reduced to the nonlinear Schroedinger equation. Interestingly, the model can support both bright and dark small amplitude travelling and non-travelling nonlinear localized modes in different parameter spaces.

关 键 词：nonlinear localized modes coherent state Klein-Gordon chain 

分 类 号：O469[理学—凝聚态物理]