First-order superfluid-Mott insulator transition of spinor bosons in an optical lattice
Statistical Mechanics
2009-11-10 v1
Abstract
We study the superfluid-Mott insulator transition of antiferromagnetic spin-1 bosons in an optical lattice described by a Bose-Hubbard model. Our variational study with the Gutzwiller-type trial wave function determines that the superfluid-Mott insulator transition is a first-order one at a part of the phase boundary curve, contrary to the spinless case. This first-order transition may be observed through an experiment, such as a Stern-Gerlach type, under a magnetic field.
Keywords
Cite
@article{arxiv.cond-mat/0408014,
title = {First-order superfluid-Mott insulator transition of spinor bosons in an optical lattice},
author = {Takashi Kimura and Shunji Tsuchiya and Susumu Kurihara},
journal= {arXiv preprint arXiv:cond-mat/0408014},
year = {2009}
}