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High-temperature thermodynamics of a strongly correlated Fermi gas[J]. PHYSICS, 2010, 39(03): 203-206.
Citation: High-temperature thermodynamics of a strongly correlated Fermi gas[J]. PHYSICS, 2010, 39(03): 203-206.

High-temperature thermodynamics of a strongly correlated Fermi gas

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  • Published Date: March 19, 2010
  • We briefly review current research progress in the field of strongly correlated atomic Fermi gases. A deep understanding of strongly correlated quantum gases is plagued by the lack of either exact solutions or a controllable small interaction parameter. In this work, we present a systematic virial expansion method to study the high-temperature thermodynamics of a strongly correlated Fermi gas, where the controllable parameter is given by the fugacity, exp(μ/kBT), with μ being the chemical potential. A practical way is proposed to obtain the expansion coefficients for both homogeneous and harmonically trapped Fermi gases. We calculate, for the first time accurately, the third-order virial coefficient. The resulting equation of states at high temperatures is compared with a recent thermodynamic measurement and with Monte Carlo simulations.
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