Stability Diagrams of a Bose-Einstein Condensate in Excited Bloch Bands

被引：0
|
作者：
Liang Zhao-Xin [1 ]
Hu Ban-Bi [1 ,2 ]
机构：
[1] Hong Kong Baptist Univ, Dept Phys, Ctr Nonlinear Studies, Beijing Hong Kong Singapore Joint Ctr Nonlinear &, Kowloon Tong, Hong Kong, Peoples R China
[2] Univ Houston, Dept Phys, Houston, TX 77204 USA
来源：
CHINESE PHYSICS LETTERS | 2009年 / 26卷 / 01期
关键词：
OPTICAL LATTICES; SUPERFLUID; DYNAMICS; GASES;
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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.
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页数：4
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