Collective Excitations of a Dipolar Bose-Einstein Condensate in an Anharmonic Trap

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	Collective Excitations of a Dipolar Bose-Einstein Condensate in an Anharmonic Trap
	W. Qi; Z. X. Liang; Z. D. Zhang
	2013
发表期刊	Chinese Physics Letters
ISSN	0256-307X
卷号	30 期号:6
摘要	The collective excitations of a one-dimensional dipolar Bose-Einstein condensate trapped in an anharmonic potential are investigated theoretically. Using the variational approach, we obtain the coupled equations of motion for the center-of-mass coordinate of the condensate and its width. In particular, analytical expressions for the low-lying excitation modes are given. The results show that dipole-dipole interactions reduce the frequency shift induced by quartic distortion. The interplay between dipole-dipole interactions and anharmonic distortion for the collapse and revival of the collective excitations originating from the nonlinear coupling between the two modes are also discussed.
部门归属	[qi wei ; liang zhao-xin ; zhang zhi-dong] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. ; qi, w (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. ; wqi11b@imr.ac.cn
关键词	Gas
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71431
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. Qi,Z. X. Liang,Z. D. Zhang. Collective Excitations of a Dipolar Bose-Einstein Condensate in an Anharmonic Trap[J]. Chinese Physics Letters,2013,30(6).
APA	W. Qi,Z. X. Liang,&Z. D. Zhang.(2013).Collective Excitations of a Dipolar Bose-Einstein Condensate in an Anharmonic Trap.Chinese Physics Letters,30(6).
MLA	W. Qi,et al."Collective Excitations of a Dipolar Bose-Einstein Condensate in an Anharmonic Trap".Chinese Physics Letters 30.6(2013).