title: Virial expansion for a strongly correlated Fermi gas.
abstract: Using a high temperature virial expansion, we present a controllable study of the thermodynamics of strongly correlated Fermi gases near the BEC-BCS crossover region. We propose a practical way to determine the expansion coefficients for both harmonically trapped and homogeneous cases, and calculate the third order coefficient b{3}(T) at finite temperatures T. At resonance, a T-independent coefficient b{3,infinity};{hom} approximately -0.290 952 95 is determined in free space. These results are compared with a recent thermodynamic measurement of 6Li atoms, at temperatures below the degeneracy temperature, and with Monte Carlo simulations.
authors.affiliation: ARC Centre of Excellence for Quantum-Atom Optics, Centre for Atom Optics and Ultrafast Spectroscopy, Swinburne University of Technology, Melbourne 3122, Australia.
authors.forename: Xia-Ji
authors.initials: XJ
authors.lastname: Liu
authors.forename: Hui
authors.initials: H
authors.lastname: Hu
authors.forename: Peter D
authors.initials: PD
authors.lastname: Drummond