%0 Journal Article
%T Mean-Field Dynamics of a Two-Mode Bose-Einstein Condensate Subject to Decoherence<br>
%A CUI Bo
%A WU Song-Lin
%A YI Xue-Xi
%A <br>
%J 中国物理快报
%D 2010
%I 
%X We discuss the dynamics of Bose-Einstein condensates in a double-well potential subject to decoherence (or particle loss). Starting from the full many-body dynamics described by the master equation, an effective Gross-Pitaevskii-like equation is derived in the mean-field approximation. By numerically solving the GP equation, we find that macroscopic quantum self-trapping disappears for strong decoherence, while generalized self-trapping occurs under weak decoherence. The fixed points have been calculated, and we find that an abrupt change from elliptic to an attractor and a repeller occurs, reflecting the metastable behavior of the system around these points.
%K 03
%K 65
%K Bz
%K 07
%K 60
%K Ly<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=8F68CC3AE195851714950E32DD51BFD1&yid=140ECF96957D60B2&vid=DB817633AA4F79B9&iid=DF92D298D3FF1E6E&sid=59906B3B2830C2C5&eid=23CCDDCD68FFCC2F&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=30