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Supersolids and the nature of phase transitions in 2D hard core bosons

G. G. Batrouni

APSMar 1, 20020 citations

Supersolid Phase in One-Dimensional Hard-Core Boson Hubbard Model with a Superlattice Potential

Guo, Huai-Ming, Liang Liang +1 more

理论物理通讯：英文版Jan 1, 20080 citations

Supersolidity for hard-core-bosons coupled to optical phonons

Sanjoy Datta, Sudhakar Yarlagadda

Solid State CommunicationsAug 16, 201010 citations

The Supersolid Phase of Interacting 2D Bosons

Anne van Otterlo, Karl-Heinz Wagenblast

Springer eBooksJan 1, 19950 citations

Supersolid order of frustrated hard-core bosons in a triangular lattice system

Hong‐Chen Jiang, M. Q. Weng, Zheng-Yu Weng +2 more

We numerically demonstrate that a supersolid phase exists in a frustrated hard-core boson system on a triangular lattice over a wide range of interaction strength. In the infinite repulsion (Ising) limit, we establish a mapping to the same problem with unfrustrated hopping, which connects the supersolid to the known results in that case. The weak superfluidity can be destroyed or strongly enhanced by a next-nearest-neighbor hopping term, which provides valuable information for experimental realization of a supersolid phase on optical lattice. A phase diagram for the frustrated anisotropic Heisenberg model on triangular lattice is also established.We numerically demonstrate that a supersolid phase exists in a frustrated hard-core boson system on a triangular lattice over a wide range of interaction strength. In the infinite repulsion (Ising) limit, we establish a mapping to the same problem with unfrustrated hopping, which connects the supersolid to the known results in that case. The weak superfluidity can be destroyed or strongly enhanced by a next-nearest-neighbor hopping term, which provides valuable information for experimental realization of a supersolid phase on optical lattice. A phase diagram for the frustrated anisotropic Heisenberg model on triangular lattice is also established.

arXiv:0810.0900Physical Review BJan 30, 200947 citations

Static impurities in a supersolid of interacting hard-core bosons on a triangular lattice

Xue‐Feng Zhang, Yu-Chuan Wen, Sebastian Eggert

We study the effect of impurities in a supersolid phase in comparison to the behavior in the solid and superfluid phases. A supersolid phase has been established for interacting hard-core bosons on a triangular lattice which may be realizable by ultracold atomic gases. Static vacancies are considered in this model which always lower the magnitude of the order parameter in the solid or superfluid phases. In the supersolid phase, however, the impurities directly affect both order parameters simultaneously and thereby reveal an interesting interplay between them. In particular, the solid order may be enhanced at the cost of a strong reduction in the superfluidity, which shows that the two order parameters cannot be in a simple superposition. We also observe an unusual impurity pinning effect in the solid ordered phase, which results in two distinct states separated by a first-order transition.We study the effect of impurities in a supersolid phase in comparison to the behavior in the solid and superfluid phases. A supersolid phase has been established for interacting hard-core bosons on a triangular lattice which may be realizable by ultracold atomic gases. Static vacancies are considered in this model which always lower the magnitude of the order parameter in the solid or superfluid phases. In the supersolid phase, however, the impurities directly affect both order parameters simultaneously and thereby reveal an interesting interplay between them. In particular, the solid order may be enhanced at the cost of a strong reduction in the superfluidity, which shows that the two order parameters cannot be in a simple superposition. We also observe an unusual impurity pinning effect in the solid ordered phase, which results in two distinct states separated by a first-order transition.

arXiv:1004.0002Physical Review BDec 9, 201013 citations

Kaleidoscope of supersolid phases of interacting hard-core bosons on the dice lattice

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