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arXiv · 0905.4783

Critical temperature of a Bose gas in an optical lattice

D. Baillie·P. B. Blakie
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Abstract

We present theory for the critical temperature of a Bose gas in a combined harmonic lattice potential based on a mean-field description of the system. We develop practical expressions for the ideal-gas critical temperature, and corrections due to interactions, the finite-size effect, and the occupation of excited bands. We compare our expressions to numerical calculations and find excellent agreement over a wide parameter regime.

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D. Baillie, P. B. Blakie. 2009-10-13. Critical temperature of a Bose gas in an optical lattice. https://doi.org/10.1103/physreva.80.031603

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