Stability Diagrams of a Bose-Einstein Condensate in a Periodic Array of Quantum Wells

被引：0
|
作者：
Xue Rui [1 ,2 ]
Liang Zhao-Xin [3 ]
Li Wei-Dong [1 ,2 ]
机构：
[1] Shanxi Univ, Inst Theoret Phys, Taiyuan 030006, Peoples R China
[2] Shanxi Univ, Dept Phys, Taiyuan 030006, Peoples R China
[3] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2009年 / 26卷 / 07期
关键词：
PHASE-TRANSITION; OPTICAL LATTICES; MOTT-INSULATOR; SUPERFLUID; DYNAMICS;
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
With the help of a set of exact closed-form solutions to the stationary Gross-Pitaevskii equation, we comprehensively investigate Landau and dynamical instabilities of a Bose-Einstein condensate in a periodic array of quantum wells. In the tight-binding limit, the analytical expressions for both Landau and dynamical instabilities are obtained in terms of the compressibility and effective mass of the BEC system. Then the stability phase diagrams are shown to be similar to the one in the case of the sinusoidal optical lattice.
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页数：4
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