Quantum phases in an optical lattice
Statistical Mechanics
2014-10-13 v1
Abstract
We present the zero-temperature phase diagram of bosonic atoms in an optical lattice, using two different mean-field approaches. The phase diagram consists of various insulating phases and a superfluid phase. We explore the nature of the insulating phase by calculating both the quasiparticle and quasihole dispersion relation. We also determine the parameters of our single band Bose-Hubbard model in terms of the microscopic parameters of the atoms in the optical lattice.
Cite
@article{arxiv.cond-mat/0011108,
title = {Quantum phases in an optical lattice},
author = {D. van Oosten and P. van der Straten and H. T. C. Stoof},
journal= {arXiv preprint arXiv:cond-mat/0011108},
year = {2014}
}
Comments
12 pages of ReVTeX with 10 postscript figures. Submitted for publication in Physical Review A