Mott insulators in an optical lattice with high filling factors

Preprint

25 October 2002

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0205066

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

HIGH FILLING FACTORS
LATTICE WITH HIGH
OPTICAL LATTICE
MOTT INSULATOR
HUBBARD
BOSE

All Related Versions

Version 1, 2002-05-03, ArXiv
Version 2, 2002-10-25, ArXiv
Published version: Physical Review A, 67 (3), 033606.

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