Excitations in a dipolar Bose-Einstein condensate

被引：0
|
作者：
Hou, Jing-Min [1 ]
Zhao, Tian-Tao [2 ]
Zhang, Li-Jie [2 ]
机构：
[1] SE Univ, Dept Phys, Nanjing 211189, Peoples R China
[2] Chongqing Inst Technol, Sch Biol Engn, Chongqing 400050, Peoples R China
来源：
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS | 2008年 / 47卷 / 05期
基金：
美国国家科学基金会;
关键词：
dipolar Bose-Einstein condensate; excitation; Green function;
D O I：
10.1007/s10773-007-9553-5
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study excitations in a dipolar Bose-Einstein condensate with Green's function. In Bogoliubov approximation, we obtain the dispersion relation. The excitation energy is dependent on the angle between the momentum and the magnetic moment. In the long-wave limit, the dispersion relation reduces to an anisotropic phonon-like dispersion relation.
引用
收藏
页码：1211 / 1218
页数：8
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