Quantum phases of hard-core bosons on two-dimensional lattices with anisotropic dipole-dipole interaction

@article{Ohgoe2012QuantumPO,
  title={Quantum phases of hard-core bosons on two-dimensional lattices with anisotropic dipole-dipole interaction},
  author={T. Ohgoe and T. Suzuki and N. Kawashima},
  journal={Physical Review A},
  year={2012},
  volume={86},
  pages={063635}
}
By using an unbiased quantum Monte Carlo method, we investigate the hard-core Bose-Hubbard model on a square lattice with anisotropic dipole-dipole interaction. To study the effect of the anisotropy, dipole moments are assumed to be polarized in the $y$ direction on the two-dimensional (2D) $xy$ plane. To perform efficient simulations of long-range interacting systems, we use the worm algorithm with an O(N) Monte Carlo method. We obtain the ground-state phase diagram that includes a superfluid… Expand

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