The Interference Effect of a Bose-Einstein Condensate in a Ring-Shaped Trap  

作　　者：CAO Li-Juan LIU Shu-Juan LU Bao-Long 曹丽娟;刘淑娟;吕宝龙(Key Laboratory of Atomic Frequency Standards,Wuhan Institute of Physics and Mathematics,Chinese Academy of Sciences,Wuhan 430071;Graduate School of the Chinese Academy of Sciences,Beijing 100049)

机构地区：[1]Key Laboratory of Atomic Frequency Standards,Wuhan Institute of Physics and Mathematics,Chinese Academy of Sciences,Wuhan 430071 [2]Graduate School of the Chinese Academy of Sciences,Beijing 100049

出　　处：《Chinese Physics Letters》2012年第5期30-32,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 11174331 and 10804123;the National Key Basic Research Program of China under Grant No 2011CB921503.

摘　　要：We have studied the interference effect of a Bose-Einstein condensate expanding in a ring-shaped trap. The dynamic process of the condensate is analyzed based on the Gross- Pitaevskii equation.Our numerical results show that a petal-like interference pattern is formed during expansion within the ring-shaped trap.The petal number depends on the evolution time,which can be well explained by the interference of two flows of the condensate.

关 键 词：equation. EINSTEIN SHAPED 

分 类 号：O41[理学—理论物理]