Mott insulators in an optical lattice with high filling factors
Statistical Mechanics
2014-10-13 v2
Abstract
We discuss the superfluid to Mott insulator transition of an atomic Bose gas in an optical lattice with high filling factors. We show that also in this multi-band situation, the long-wavelength physics is described by a single-band Bose-Hubbard model. We determine the many-body renormalization of the tunneling and interaction parameters in the effective Bose-Hubbard Hamiltonian, and consider the resulting model at nonzero temperatures. We show that in particular for a one or two-dimensional optical lattice, the Mott insulator phase is more difficult to realize than anticipated previously.
Keywords
Cite
@article{arxiv.cond-mat/0205066,
title = {Mott insulators in an optical lattice with high filling factors},
author = {D. van Oosten and P. van der Straten and H. T. C. Stoof},
journal= {arXiv preprint arXiv:cond-mat/0205066},
year = {2014}
}
Comments
5 pages, 3 figures, title changed, major restructuring, resubmitted to PRL