Ultralong-range order in the Fermi-Hubbard model with long-range interactions
Quantum Gases
2015-08-19 v2 Strongly Correlated Electrons
Atomic Physics
Abstract
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 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 non-trivial behavior on a scale of tens of the lattice sites. We study the properties and the stability of the ultralong-range ordered phase, and show that it is accessible in modern experiments with ultracold polar molecules and magnetic atoms.
Cite
@article{arxiv.1506.06007,
title = {Ultralong-range order in the Fermi-Hubbard model with long-range interactions},
author = {Erik G. C. P. van Loon and Mikhail I. Katsnelson and Mikhail Lemeshko},
journal= {arXiv preprint arXiv:1506.06007},
year = {2015}
}