On some classes of two-dimensional local models in discrete two-dimensional monatomic FPU lattice with cubic and quartic potential  

作　　者：徐权 田强 

机构地区：[1]Department of Physics,Daqing Normal University [2]Department of Physics,Beijing Normal University

出　　处：《Chinese Physics B》2009年第1期259-268,共10页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No 10574011);Natural Science Foundation of Heilongjiang Province,China (Grant No A200506)

摘　　要：This paper discusses the two-dimensional discrete monatomic Fermi- Pasta-Ulam lattice, by using the method of multiple-scale and the quasi-discreteness approach. By taking into account the interaction between the atoms in the lattice and their nearest neighbours, it obtains some classes of two-dimensional local models as follows： two-dimensional bright and dark discrete soliton trains, two-dimensional bright and dark line discrete breathers, and two-dimensional bright and dark discrete breather.This paper discusses the two-dimensional discrete monatomic Fermi- Pasta-Ulam lattice, by using the method of multiple-scale and the quasi-discreteness approach. By taking into account the interaction between the atoms in the lattice and their nearest neighbours, it obtains some classes of two-dimensional local models as follows： two-dimensional bright and dark discrete soliton trains, two-dimensional bright and dark line discrete breathers, and two-dimensional bright and dark discrete breather.

关 键 词：two-dimensional bright and dark discrete soliton trains two-dimensional bright and dark discrete breathers two-dimensional bright and dark line discrete breathers 

分 类 号：O469[理学—凝聚态物理]