Lattice Model with Traveling Compactons

作     者：XIAQing-Lin JIANGDong-Chu 

作者机构：SchoolofPhysicsScienceandTechnologyandStateKeyLaboratoryforPowderMetallurgyCentralSouthUniversityChangsha410083China DepartmentofPhysicsandElectronicScienceHunanCityUniversityYiyang413049China 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2004年第42卷第2X期

页      面：295-298页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0702[理学-物理学] 

基　　金：湖南省自然科学基金 

主　　题：非谐波格子模型 凝聚态物理 反转理论 类康普顿孤立波解 非线性耦合参数 

摘      要：We introduce a purely anharmonic lattice model with specific double-well on-site potential, which admits traveling compacton-like solitary wave solutions by the inverse method with the help of Mathematica. By properly choosing the shape of the solitary wave solution of the system, we can calculate the parameters of the specific on-site potential. We also found that the localization of the compacton is related to the nonlinear coupling parameter Cnl and the potential parameter V0 of the on-site potential, and the velocity of the propagation of the compacton is determined by the localization parameter q and the potential parameter V0. Numerical calculation results demonstrate that the narrow compacton is unstable while the wide compacton is stable when they move along the lattice chain.