%0 Journal Article
%T Dynamical phase changes of the self-trapping of Bose-Einstein condensates and its characteristic of entanglement<br>玻色-爱因斯坦凝聚体自囚禁现象的动力学相变及其量子纠缠特性
%A Ma Yun
%A Fu Li-Bin
%A Yang Zhi-An
%A Liu Jie
%A <br>马云
%A 傅立斌
%A 杨志安
%A 刘杰
%J 物理学报
%D 2006
%I 
%X In this paper, we exploit two-mode model to investigate the influence of quantum fluctuation on the self-trapping of the Bose-Einstein Condensate(BEC). We found that, even for the finite number of particles, the transition to self-trapping is still observed.In particular, because of the quantum fluctuation due to the finite number of particles, the critical phenomenon becomes fuzzily: the smaller the number of particles is, the more obviously fuzzily the critical phenomenon becomes. Quantum entanglement entropy is then introduced to depict the critical behavior near the transition point.
%K Bose-Einstein condensate (BEC)
%K self-trapping
%K entanglement entropy<br>玻色-爱因斯坦凝聚(BEC)
%K 自囚禁
%K 纠缠熵
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=488B55D4C1D1D54A&yid=37904DC365DD7266&vid=E514EE58E0E50ECF&iid=708DD6B15D2464E8&sid=25F415FA383BA55D&eid=7E2F72DDF2C42047&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=28