Quantum phase transition of condensed bosons in optical lattices
Soft Condensed Matter
2009-11-10 v1
Abstract
In this paper we study the superfluid-Mott-insulator phase transition of ultracold dilute gas of bosonic atoms in an optical lattice by means of Green function method and Bogliubov transformation as well. The superfluid- Mott-insulator phase transition condition is determined by the energy-band structure with an obvious interpretation of the transition mechanism. Moreover the superfluid phase is explained explicitly from the energy spectrum derived in terms of Bogliubov approach.
Keywords
Cite
@article{arxiv.cond-mat/0403571,
title = {Quantum phase transition of condensed bosons in optical lattices},
author = {Jun-Jun Liang and J. -Q. Liang and W. -M. Liu},
journal= {arXiv preprint arXiv:cond-mat/0403571},
year = {2009}
}
Comments
13 pages, 1 figures