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Phys. Rev. A 75, 031605(R) (2007) [4 pages]

Zero-temperature thermodynamics of asymmetric Fermi gases at unitarity

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Aurel Bulgac and Michael McNeil Forbes
Department of Physics, University of Washington, Seattle, Washington 98195-1560, USA

Received 2 June 2006; published 27 March 2007

The equation of state of a dilute two-component asymmetric Fermi gas at unitarity is subject to strong constraints, which affect the spatial density profiles in atomic traps. These constraints require the existence of at least one nontrivial partially polarized (asymmetric) phase. We determine the relation between the structure of the spatial density profiles and the T=0 equation of state, based on the most accurate theoretical predictions available. We also show how the equation of state can be determined from experimental observations.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.75.031605
DOI:
10.1103/PhysRevA.75.031605
PACS:
03.75.Ss, 05.30.Fk, 05.70.Ce, 81.30.Dz