Different Kinds of Discrete Breathers in Three Types of One-Dimensional Models  

作　　者：吕彬彬 田强 

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

出　　处：《Communications in Theoretical Physics》2010年第10期728-734,共7页理论物理通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No.1057411; the Foundation for Researching Group by Beijing Normal University

摘　　要：The dynamics of different kinds of discrete breathers in three types of one-dimensionai monatomic chains with on-site and inter-site potentiais are investigated. The existence and evolution of symmetric breather, antisymmetric breather, and multibreather in one-dimensionai models are proved by using rotating wave approximation, local anharmonic approximation, and the numerical method. The linear stability of these breathers is investigated by using Lyapunov stable anaiysis. The localization and stability of breathers in three types of models correlate closely to the system nonlinear parameter β.

关 键 词：symmetric breather antisymmetric breather multibreather linear stability 

分 类 号：O562[理学—原子与分子物理]