Controlling of Fusion of Two Solitons in a Two-Component Condensate by an Anharmonic External Potential  

作　　者：ZHANG Zhi-Qiang WANG Deng-Long LUO Xiao-Qing HE Zhang-Ming DING Jian-Wen 张志强;王登龙;罗晓清;何章明;丁建文(Department of Physics,the Key Laboratory of Quantum Engineering and Micro-Nano Energy Technology of the Education Bureau of Hunan Province,Xiangtan University,Xiangtan 411105)

机构地区：[1]Department of Physics,the Key Laboratory of Quantum Engineering and Micro-Nano Energy Technology of the Education Bureau of Hunan Province,Xiangtan University,Xiangtan 411105

出　　处：《Chinese Physics Letters》2011年第5期30-33,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 No 11074212;the Foundation for the Author of National Excellent Doctoral Dissertation of China under Grant No 200726;the Foundation of Key Laboratory of QET of the Education Bureau of Hunan Province under Grant No 09QNET05.

摘　　要：By using the multiple-scale method,we analytically study dynamical properties of two-component Bose-Einstein condensates trapped in a harmonic plus quartic anharmonic potential.It is shown that the anharmonic potential has an important effect on the dark solitons of the condensates.In particular,when the strength of the anharmonic external potential increases,the fusion of the two solitons becomes faster.This implies that the fusion of the two solitons can be controlled by an anharmonic potential.

关 键 词：POTENTIAL HARMONIC SOLITONS 

分 类 号：O17[理学—数学]