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Title

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

Author(s)

Hu, Hui;  Liu, Xia-Ji;  Drummond, P. D.

Abstract

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 Nozie?res and Schmitt-Rink treatment of fluctuations is in excellent agreement with the experimental data and available MC calculations at unitarity.

Publication type

Journal article

Source

Physical Review A, Vol. 77, no. 6 (2008), article no. 061605 (R)

Publication year

2008

FOR Code(s)

0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics;  0204 Condensed Matter Physics;  0205 Optical Physics

Keyword(s)

Electron gas;  Fermi gases;  Many-body simulations;  MC;  Monte Carlo simulations;  QMC;  Quantum Monte Carlo;  Semiconductor counters;  Strong couplings;  Systematic;  Unitarity;  Fermions

Publisher

American Physical Society

ISSN

1050-2947

Publisher URL

http://dx.doi.org/10.1103/PhysRevA.77.061605

Copyright

Copyright © 2008 The American Physical Society. Published version of this paper reproduced here in accordance with the copyright policy of the publisher.

Full text

Peer reviewed