Ultralong-range order in the Fermi-Hubbard model with long-range interactions

@article{Loon2015UltralongrangeOI,
  title={Ultralong-range order in the Fermi-Hubbard model with long-range interactions},
  author={E. V. Loon and M. Katsnelson and M. Lemeshko},
  journal={Physical Review B},
  year={2015},
  volume={92},
  pages={081106}
}
We use the dual boson approach to reveal the phase diagram of the Fermi-Hubbard model with long-range dipole-dipole interactions. By using a large-scale finite-temperature calculation on a 64×64 square lattice we demonstrate the existence of a novel phase, possessing an "ultralong-range" order. The fingerprint of this phase - the density correlation function - features a nontrivial behavior on a scale of tens of lattice sites. We study the properties and the stability of the ultralong-range… Expand
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