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Effects of three-body interaction on dynamic and static structure factors of an optically-trapped Bose gas
W. Qi; Z. X. Liang; Z. D. Zhang
2013
Source PublicationChinese Physics B
ISSN1674-1056
Volume22Issue:9
AbstractWe investigate how three-body interactions affect the elementary excitations and dynamic structure factor of a Bose-Einstein condensate trapped in a one-dimensional optical lattice. To this end, we numerically solve the Gross-Pitaevskii equation and then the corresponding Bogoliubov equations. Our results show that three-body interactions can change both the Bogoliubov band structure and the dynamical structure factor dramatically, especially in the case of the two-body interaction being relatively small. Furthermore, when the optical lattice is strong enough, the analytical results, combined with the sum-rule approach, help us to understand that: the effects of three-body interactions on the static structure factor can be significantly amplified by an optical lattice. Our predictions should be observable within the current Bragg spectroscopy experiment.
description.department[qi wei ; liang zhao-xin ; zhang zhi-dong] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; qi, w (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; wqi11b@imr.ac.cn
KeywordDynamic Structure Factor Three-body Interaction Optical Lattice Einstein Condensate Lattices Instability Excitation
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71430
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
W. Qi,Z. X. Liang,Z. D. Zhang. Effects of three-body interaction on dynamic and static structure factors of an optically-trapped Bose gas[J]. Chinese Physics B,2013,22(9).
APA W. Qi,Z. X. Liang,&Z. D. Zhang.(2013).Effects of three-body interaction on dynamic and static structure factors of an optically-trapped Bose gas.Chinese Physics B,22(9).
MLA W. Qi,et al."Effects of three-body interaction on dynamic and static structure factors of an optically-trapped Bose gas".Chinese Physics B 22.9(2013).
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