Coexistence of superfluid and Mott phases of lattice bosons

被引：16

作者：

Barankov, R. A.

Lannert, C.

Vishveshwara, S.

机构：

[1] Univ Illinois, Dept Phys, Urbana, IL 61801 USA

[2] Wellesley Coll, Dept Phys, Wellesley, MA 02481 USA

来源：

PHYSICAL REVIEW A | 2007年 / 75卷 / 06期

关键词：

D O I：

10.1103/PhysRevA.75.063622

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Recent experiments on strongly interacting bosons in optical lattices have revealed the coexistence of spatially separated Mott-insulating and number-fluctuating phases. We explore the condensate properties of the number fluctuating phase trapped between the Mott-insulating regions and derive the associated collective-mode structure. We discuss the crossover of the interlayer properties between two- and three-dimensional behavior as a function of the lattice parameters and estimate the critical temperatures for the transition from the normal to superfluid state.

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页数：5

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