Superfluidity of Paired Bosons from Correlated Tunneling

作     者：YANG Shi-Jie 

作者机构：Department of Physics Beijing Normal University Beijing 100875 China 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2009年第52卷第10期

页      面：611-614页

核心收录：

学科分类：080705[工学-制冷及低温工程] 081406[工学-桥梁与隧道工程] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0807[工学-动力工程及工程热物理] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0702[理学-物理学] 0823[工学-交通运输工程] 

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

主　　题：superfluidity correlated tunneling pairing 

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.