First order phase transitions in optical lattices with tunable three-body onsite interaction
Quantum Gases
2015-06-04 v3 Statistical Mechanics
Quantum Physics
Abstract
We study the two-dimensional Bose-Hubbard model in the presence of a three-body interaction term, both at a mean field level and via quantum Monte Carlo simulations. The three-body term is tuned by coupling the triply occupied states to a trapped universal trimer. We find that, for sufficiently attractive three-body interaction the n = 2 Mott lobe disappears and the system displays first order phase transitions separating the n = 1 from the n = 3 lobes, and the n = 1 and n = 3 Mott insulator from the superfluid. We have also analyzed the effect of finite temperature and found that transitions are still of first order at temperatures T\simJ where J is the hopping matrix element.
Keywords
Cite
@article{arxiv.1202.3054,
title = {First order phase transitions in optical lattices with tunable three-body onsite interaction},
author = {Arghavan Safavi-Naini and Javier von Stecher and Barbara Capogrosso-Sansone and Seth T. Rittenhouse},
journal= {arXiv preprint arXiv:1202.3054},
year = {2015}
}
Comments
introduction slightly changed, modified figures