Kinetic quantum phase transition in bosonic superfluids on a lattice
Other Condensed Matter
2009-01-28 v2
Abstract
It has been well known that quantum fluctuations induce a macroscopic phase transition from a superfluid to a Mott insulator phase driven by the repulsive potential energy in the ground state of dense bosonic systems on a lattice. We find a quantum phase transition from the homogeneous to an inhomogeneous Bose-condensate strongly affected or sometimes driven by the kinetic energy dispersion in dilute bosonic superfluids, which provides a clear identification of the superfluid state.
Cite
@article{arxiv.0812.1977,
title = {Kinetic quantum phase transition in bosonic superfluids on a lattice},
author = {A. S. Alexandrov and I. O. Thomas},
journal= {arXiv preprint arXiv:0812.1977},
year = {2009}
}
Comments
4 pages, 3 figures. Submitted to Physical Review Letters Revised version has additional results and a clarification regarding the applicability of the values of the hopping parameters