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arXiv 1302.1376cond-mat.quant-gas
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三角晶格上具有电子对跳跃的扩展Bose-哈伯德模型

Extended Bose-Hubbard model with pair hopping on the triangular lattice

Yancheng Wang, Wanzhou Zhang, Hui Shao, Wenan Guo

摘要:

利用基于Gutzwiller假设的平均场方法,系统地研究了三角格子上的扩展Bose-哈伯德模型。对跳跃条款明确包括和三体约束。基态相图和各种量子相变进行了详细的研究。特别地,我们证明了对超固相的存在性和稳定性。

英文摘要:

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 ground-state phase diagram and a variety of quantum phase transitions are investigated in great detail. In particular, we show the existence and stability of the pair supersolid phase.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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