Competition between Vortex Unbinding and Tunneling in an Optical Lattice
Statistical Mechanics
2007-06-13 v1 Strongly Correlated Electrons
Abstract
We study a system of two-dimensional Bose gases trapped in minima of a deep one-dimensional optical lattice potential. Increasing the tunneling amplitude between adjacent gases drives a deconfinement transition to a phase where coherence is established between neighboring two-dimensional gases. We compute the signature of this transition in the interference pattern of the system as well as in its rotational response, which provides a direct measurement of the superfluidity in the system.
Cite
@article{arxiv.cond-mat/0701761,
title = {Competition between Vortex Unbinding and Tunneling in an Optical Lattice},
author = {M. A. Cazalilla and A. Iucci and T. Giamarchi},
journal= {arXiv preprint arXiv:cond-mat/0701761},
year = {2007}
}
Comments
4+ pages, 1 figure