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	Superfluid-Mott-insulator transition in a one-dimensional optical lattice with double-well potentials
	Jiang, H. C. ; Weng, Z. Y. ; Xiang, T.
	2010-05-06 ; 2010-05-06
关键词	QUANTUM RENORMALIZATION-GROUPS Physics, Condensed Matter
中文摘要	We study the superfluid-Mott-insulator transition of ultracold bosonic atoms in a one-dimensional optical lattice with a double-well confining trap using the density-matrix renormalization group method. At low density, the system behaves similarly as two separated ones inside each well. At high density, however, interesting features appear resulting from the quantum tunnelling between the two wells and the competition between the "superfluid" and Mott regions. These interesting features are characterized by a rich step-plateau structure in the visibility and the satellite peaks in the momentum distribution function, with an oscillating pattern as a function of the on-site repulsion. These properties shed light on the understanding of the quantum phase coherence between two coupled condensates.
语种	英语 ; 英语
出版者	AMER PHYSICAL SOC ; COLLEGE PK ; ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/15206]
专题	清华大学
推荐引用方式 GB/T 7714	Jiang, H. C.,Weng, Z. Y.,Xiang, T.. Superfluid-Mott-insulator transition in a one-dimensional optical lattice with double-well potentials[J],2010, 2010.
APA	Jiang, H. C.,Weng, Z. Y.,&Xiang, T..(2010).Superfluid-Mott-insulator transition in a one-dimensional optical lattice with double-well potentials..
MLA	Jiang, H. C.,et al."Superfluid-Mott-insulator transition in a one-dimensional optical lattice with double-well potentials".(2010).

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