Dynamical Stability of Gap Soliton of One-Dimensional Condensate in Optical Lattices with Strong Interatomic Interaction  

作　　者：王登龙 颜晓红 王凤姣 

机构地区：[1]College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 210016 [2]Department of Physics, Xiangtan University, Xiangtan 411105

出　　处：《Chinese Physics Letters》2007年第7期1817-1820,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 10674070 and 10674113, the Jiangsu Provincial Postdoctoral Science Foundation （No 0601043B）, and the Natural Science Foundation of Hunan Province （No 06JJ50006）.

摘　　要：By developing the multiple scales method, we analytically study the dynamics properties of gap soliton of Bose- Einstein condensate in optical lattices. It is shown that the gap soliton will appear at Brillouin zone edge of linear band spectrum of the condensates when the interatomic interaction strength is larger than the lattice depth. Moreover, the density of gap soliton starts to be relatively small, while it increases with time and becomes stable.By developing the multiple scales method, we analytically study the dynamics properties of gap soliton of Bose- Einstein condensate in optical lattices. It is shown that the gap soliton will appear at Brillouin zone edge of linear band spectrum of the condensates when the interatomic interaction strength is larger than the lattice depth. Moreover, the density of gap soliton starts to be relatively small, while it increases with time and becomes stable.

关 键 词：BOSE-EINSTEIN CONDENSATE LONG-RANGE INTERACTION ENVELOPE CHAIN 

分 类 号：O43[机械工程—光学工程]