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题名: Interaction broadening of Wannier functions and Mott transitions in atomic BEC
作者: Li, Jinbin ;  Yu, Yue ;  Dudarev, Artem M. ;  Niu, Qian
刊名: NEW JOURNAL OF PHYSICS
出版日期: 2006
卷号: 8, 期号:154, 页码:-
关键词: BOSE-EINSTEIN CONDENSATE ;  SUPERFLUID ;  MODEL ;  INSULATOR
学科分类: Physics
通讯作者: Li, JB , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
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
英文摘要: 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.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000240206900005
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内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5920
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
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):-.
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