%0 Journal Article
%T Stability Diagrams of a Bose-Einstein Condensate in Excited Bloch Bands<br>
%A LIANG Zhao-Xin
%A HU Ban-Bi
%A <br>
%J 中国物理快报
%D 2009
%I 
%X Landau and dynamical instabilities of a Bose-Einstein condensate (BEC) in the excited bands of a one-dimensional optical lattice are investigated by the Gross-Pitaevskii theory. Our results show that there always exists Landau instability for a BEC in the whole region of excited bands.We also map out the dangerous zones of the dynamical instability. The experimental implications of the stability diagram are discussed.
%K 67
%K 80
%K -s
%K 67
%K 40
%K -w
%K 03
%K 75
%K Lm<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=D4B9E7F9F23889C575204A9180B5971E&yid=DE12191FBD62783C&vid=96C778EE049EE47D&iid=CA4FD0336C81A37A&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0