Finite temperature superfluid transition of strongly-correlated lattice bosons in various geometries
Abstract
We study finite-temperature properties of the strongly interacting bosons in three-dimensional lattices by employing the combined Bogoliubov method and the quantum rotor approach. Based on the mapping of the Bose-Hubbard Hamiltonian of strongly interacting bosons onto U(1) phase action, we study their thermodynamic phase diagrams for several lattice geometries including; simple cubic, body- as well as face-centered lattices. The quantitative values for the phase boundaries obtained here may be used as a reference for emulation of the Bose-Hubbard model on a variety of optical lattice structures in order to demonstrate experimental-theoretical consistency for the numerical values regarding the location of the critical points.
Keywords
Cite
@article{arxiv.1510.04449,
title = {Finite temperature superfluid transition of strongly-correlated lattice bosons in various geometries},
author = {T. A. Zaleski and T. K. Kopec},
journal= {arXiv preprint arXiv:1510.04449},
year = {2015}
}
Comments
6 pages, 5 figures