A Rotating Bose-Einstein Condensation in a Toroidal Trap  

作　　者：文渝川 张鹏鸣 杨师杰 

机构地区：[1]Center of Theoretical Physics,Department of Physics,Capital Normal University [2]Kavli Institute for Theoretical Physics China,Chinese Academy of Sciences [3]Institute of Modern Physics,Chinese Academy of Sciences [4]Department of Physics,Beijing Normal University

出　　处：《Communications in Theoretical Physics》2011年第12期1031-1034,共4页理论物理通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos.10904096 and 10604024;the Natural Science Foundation of Beijing under Grant No.1092009

摘　　要：We have studied the ground state configurations of a rotating Bose-Einstein condensation in a toroidal trap as the radius of the central Ganssian potentiaJ expands adiabatically. Firstly, we observe that the vortices are devoured successively into the central hole of the condensate to form a giant vortex as the radius of the trap expands. When all the pre-existing vortices are absorbed, the angular momentum of the system still increase as the radius of the ganssian potential enlarges. When increasing the interaction strength, we find that more singly quantized vortices are squeezed into the condensate, but the giant vortex does not change.

关 键 词：Bose-Einstein condensation toroidal trap VORTEX 

分 类 号：O469[理学—凝聚态物理]