Phys. Rev. A 77, 061605(R) (2008) [4 pages]

Comparative study of strong-coupling theories of a trapped Fermi gas at unitarity

Abstract

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Hui Hu^1,2, Xia-Ji Liu², and Peter D. Drummond²
¹Department of Physics, Renmin University of China, Beijing 100872, China
²ARC Centre of Excellence for Quantum-Atom Optics, Department of Physics, University of Queensland, Brisbane, Queensland 4072, Australia

Received 4 December 2007; published 27 June 2008

We present a systematic comparison of the most recent thermodynamic measurements of a trapped Fermi gas at unitarity with predictions from strong-coupling theories and quantum Monte Carlo (MC) simulations. The accuracy of the experimental data, of the order of a few percent, allows a precise test of different many-body approaches. We find that a Nozières and Schmitt-Rink treatment of fluctuations is in excellent agreement with the experimental data and available MC calculations at unitarity.

URL:

http://link.aps.org/doi/10.1103/PhysRevA.77.061605

DOI:

10.1103/PhysRevA.77.061605

PACS:

03.75.Hh, 03.75.Ss, 05.30.Fk

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Phys. Rev. A 77, 061605(R) (2008) [4 pages]

Comparative study of strong-coupling theories of a trapped Fermi gas at unitarity