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arXiv:1101.5406 · Journal of Modern Physics

Effects of Interactions and Temperature in Disordered Ultra-Cold Bose Gases

Clemens P. J. Adolphs, Joseph Towers, Marie Piraud, Konstantin V. Krutitsky, David A. W. Hutchinson

Published Jan 1, 2014• 1 citation
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Abstract

We simulate ultra-cold interacting bosons in quasi-one-dimensional, incommensurate optical lattices. In the tight-binding limit, these lattices have pseudo-random on-site energies and thus can potentially lead to Anderson localization. We use the Hartree-Fock-Bogoliubov formalism in the Bose-Hubbard model to explore the parameter regimes that lead to exponential localization of the ground state in a 3-colour optical lattice and investigate the role of repulsive interactions, harmonic confinement and finite temperature.

DOI
10.4236/jmp.2014.58077

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