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Interaction broadening of Wannier functions and Mott transitions in atomic BEC
Li, Jinbin; Yu, Yue; Dudarev, Artem M.; Niu, Qian; Li, JB , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
2006
发表期刊NEW JOURNAL OF PHYSICS
ISSN1367-2630
卷号8期号:154页码:-
摘要Superfluid to Mott-insulator transitions in atomic Bose - Einstein condensates (BEC) in optical lattices are investigated for the case of number of atoms per site larger than one. To account for mean field repulsion between the atoms in each well, we construct an orthogonal set of Wannier functions. The resulting hopping amplitude and on-site interaction may be substantially different from those calculated with single-atom Wannier functions. As illustrations of the approach, we consider lattices of various dimensionality and different mean occupations. We find that in three-dimensional optical lattices the correction to the critical lattice depth is significant enough to be measured experimentally even for a small number of atoms. Finally, we discuss the validity of the single-band model.
部门归属Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100080, Peoples R China; Univ Texas, Dept Phys, Austin, TX 78712 USA; Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
关键词Bose-einstein Condensate Superfluid Model Insulator
学科领域Physics
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收录类别SCI
WOS记录号WOS:000240206900005
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被引频次:31[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5920
专题理论物理所1978-2010年知识产出
通讯作者Li, JB , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
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Li, Jinbin,Yu, Yue,Dudarev, Artem M.,et al. Interaction broadening of Wannier functions and Mott transitions in atomic BEC[J]. NEW JOURNAL OF PHYSICS,2006,8(154):-.
APA Li, Jinbin,Yu, Yue,Dudarev, Artem M.,Niu, Qian,&Li, JB , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.(2006).Interaction broadening of Wannier functions and Mott transitions in atomic BEC.NEW JOURNAL OF PHYSICS,8(154),-.
MLA Li, Jinbin,et al."Interaction broadening of Wannier functions and Mott transitions in atomic BEC".NEW JOURNAL OF PHYSICS 8.154(2006):-.
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