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

• 来源期刊: 中国物理B（英文版）
• 关键词: nonlinear localized modes coherent state Klein-Gordon chain
• 年，卷（期）: 2008,（10）
• 页码范围: 3841-3846
• 页数: 6页
• 语种: 英文

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 Schr(o)dinger equation.Interestingly,the model can support both bright and dark small amplitude travelling and non-travelling nonlinear localized modes in different parameter spaces.