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arXiv · 1302.1376

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

Yancheng Wang·Wanzhou Zhang·Hui Shao·Wenan Guo
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Abstract

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.

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Yancheng Wang, Wanzhou Zhang, Hui Shao, Wenan Guo. 2013-02-06. Extended Bose-Hubbard model with pair hopping on the triangular lattice. https://doi.org/10.1088/1674-1056%2F22%2F9%2F096702

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