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Phys. Rev. Lett. 91, 050401 (2003) [4 pages]

Superfluid Fermi Gases with Large Scattering Length

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J. Carlson1, S.-Y. Chang2, V. R. Pandharipande2, and K. E. Schmidt2,*
1Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
2Department of Physics, University of Illinois at Urbana-Champaign, 1110 W. Green Street, Urbana, Illinois 61801, USA

Received 21 March 2003; published 31 July 2003

We report quantum Monte Carlo calculations of superfluid Fermi gases with short-range two-body attractive interactions with infinite scattering length. The energy of such gases is estimated to be (0.44±0.01) times that of the noninteracting gas, and their pairing gap is approximately twice the energy per particle.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.91.050401
DOI:
10.1103/PhysRevLett.91.050401
PACS:
03.75.Hh, 05.30.Fk, 21.65.+f

*Permanent address: Department of Physics and Astronomy, Arizona State University, Tempe, AZ 85287, USA.