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Finite-temperature effects on the number fluctuation of ultracold atoms across the superfluid-to-Mott-insulator transition
Lu, Xiancong; Yu, Yue; Lu, XC , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
2006
发表期刊PHYSICAL REVIEW A
ISSN1050-2947
卷号74期号:6页码:-
摘要We study the thermodynamics of ultracold Bose atoms in optical lattices by numerically diagonalizing the mean-field Hamiltonian of the Bose-Hubbard model. This method well describes the behavior of long-range correlations and therefore is valid deep in the superfluid phase. For the homogeneous Bose-Hubbard model, we draw the finite-temperature phase diagram and calculate the superfluid density at unity filling. We evaluate the finite-temperature effects in a recent experiment probing number fluctuation [Phys. Rev. Lett. 96 090401 (2006)], and find that our finite-temperature curves give a better fitting to the experimental data, implying non-negligible temperature effects in this experiment.
部门归属Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Bose-hubbard Model Optical Lattices Einstein Condensate Phase-transition Quantum Gases Bosons Thermodynamics Dynamics Systems Diagram
学科领域Physics
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收录类别SCI
WOS记录号WOS:000243166700126
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被引频次:22[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/311006/5825
专题理论物理所SCI论文
通讯作者Lu, XC , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
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Lu, Xiancong,Yu, Yue,Lu, XC , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China. Finite-temperature effects on the number fluctuation of ultracold atoms across the superfluid-to-Mott-insulator transition[J]. PHYSICAL REVIEW A,2006,74(6):-.
APA Lu, Xiancong,Yu, Yue,&Lu, XC , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.(2006).Finite-temperature effects on the number fluctuation of ultracold atoms across the superfluid-to-Mott-insulator transition.PHYSICAL REVIEW A,74(6),-.
MLA Lu, Xiancong,et al."Finite-temperature effects on the number fluctuation of ultracold atoms across the superfluid-to-Mott-insulator transition".PHYSICAL REVIEW A 74.6(2006):-.
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