Thermodynamics of Ultracold Fermions in Traps

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  • 3 November 2004
Abstract
The ability to tune the strength of the attractive interaction in trapped Fermi gases is revealing the nature of superfluidity (and superconductivity) in a hitherto unexplored regime. Within the last few years we have witnessed the discovery of strongly interacting Fermi gases; over the last year we have found strong evidence for their superfluidity. These interacting gases appear at intermediate coupling and are the most complex. We do not know the nature of the fermionic and bosonic excitations and, until recently (cond-mat/0409283), measurements of temperature have been problematic, largely because of the absence of theoretical guidance. This paper probes these fundamental questions through studies of thermodynamics, leading to good quantitative agreement with experiment.

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