Superfluidity of Paired Bosons from Correlated Tunneling  

作　　者：YANG Shi-Jie 

机构地区：[1]Department of Physics, Beijing Normal University, Beijing 100875, China

出　　处：《Communications in Theoretical Physics》2009年第10期611-614,共4页理论物理通讯（英文版）

基　　金：Supported by National Natural Science Foundation of China under Grant No.10874018;by the 973 Program Project under Grant No.2009CB929101

摘　　要：We study superfluidity of paired Bosonic atoms in optical lattices. The atoms have strong repulsive on-slte energy. Single atom tunneling is severely suppressed while the atom-pair may co-tunnel by the second order quantum transition, which induces paired superfluidity as repulsive nearest-neighbor interactions are included. The mean-field phase diagram and low energy excitations are explored for a square lattice system.

关 键 词：SUPERFLUIDITY correlated tunneling PAIRING 

分 类 号：O512[理学—低温物理] U455.4[理学—物理]