Extended Bose-Hubbard model with pair hopping on triangular lattice

Extended Bose-Hubbard model with pair hopping on triangular lattice

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摘要 We study systematically an extended Bose-Hubbard model on the triangular lattice by means of a meanfield method based on the Gutzwiller ansatz. Pair hopping terms are explicitly included and a three-body constraint is applied. The zero-temperature phase diagram and a variety of quantum phase transitions are investigated in great detail. In particular, we show the existence and the stability of the pair supersolid phase. We study systematically an extended Bose-Hubbard model on the triangular lattice by means of a meanfield method based on the Gutzwiller ansatz. Pair hopping terms are explicitly included and a three-body constraint is applied. The zero-temperature phase diagram and a variety of quantum phase transitions are investigated in great detail. In particular, we show the existence and the stability of the pair supersolid phase.

作者王艳成张万舟邵慧郭文安

机构地区 Physics Department College of Physics and Optoelectronics

出处《Chinese Physics B》 SCIE EI CAS CSCD 2013年第9期539-546,共8页 中国物理B（英文版）

基金 supported by the National Natural Science Foundation of China (Grant Nos. 11175018 and 11247251)

关键词 extended Bose-Hubbard model pair hopping zero-temperature phase diagram pair supersolid extended Bose-Hubbard model, pair hopping, zero-temperature phase diagram, pair supersolid

分类号 O431.2 [机械工程—光学工程]

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Chinese Physics B

2013年第9期

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Extended Bose-Hubbard model with pair hopping on triangular lattice

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