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Three-Fluid Description of the Sympathetic Cooling of a Boson-Fermion Mixture

M. Wouters, J. Tempere, J. T. Devreese

cond-matarXiv:cond-mat/0301544

Abstract

We present a model for sympathetic cooling of a mixture of fermionic and bosonic atomic gases in harmonic traps, based on a three-fluid description. The model confirms the experimentally observed cooling limit of about 0.2 TF when only bosons are pumped. We propose sequential cooling -- first pumping of bosons and afterwards fermions -- as a way to obtain lower temperatures. For this scheme, our model predicts that temperatures less than 0.1 TF can be reached.

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