One-dimensional phase transitions in a two-dimensional optical lattice
Other Condensed Matter
2009-11-13 v1
Abstract
A phase transition for bosonic atoms in a two-dimensional anisotropic optical lattice is considered. If the tunnelling rates in two directions are different, the system can undergo a transition between a two-dimensional superfluid and a one-dimensional Mott insulating array of strongly coupled tubes. The connection to other lattice models is exploited in order to better understand the phase transition. Critical properties are obtained using quantum Monte Carlo calculations. These critical properties are related to correlation properties of the bosons and a criterion for commensurate filling is established.
Cite
@article{arxiv.0805.0227,
title = {One-dimensional phase transitions in a two-dimensional optical lattice},
author = {Magnus Rehn and Sara Bergkvist and Anders Rosengren and Robert Saers and Martin Zelán and Emil Lundh and Anders Kastberg},
journal= {arXiv preprint arXiv:0805.0227},
year = {2009}
}
Comments
14 pages, 8 figures