Simple Mean-Field Theory for a Zero-Temperature Fermionic Gas at a Feshbach Resonance

Journal Article · Fri Sep 09 00:00:00 EDT 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.95.110408· OSTI ID:20699412

Javanainen, Juha; Kostrun, Marijan; Carmichael, Andrew ^[1]; Mackie, Matt ^[2]

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1. Department of Physics, University of Connecticut, Storrs, Connecticut 06269-3046 (United States)
2. Department of Physics, Temple University, Philadelphia, Pennsylvania 19122 (United States)

We present a simple two-channel mean-field theory for a zero-temperature two-component Fermi gas in the neighborhood of a Feshbach resonance. Our results agree with recent experiments on the bare-molecule fraction as a function of magnetic field [Partridge et al., Phys. Rev. Lett. 95, 020404 (2005)]. Even in this strongly coupled gas of {sup 6}Li, the experimental results depend on the structure of the molecules formed in the Feshbach resonance and, therefore, are not universal.

• OSTI ID: 20699412
• Journal Information: Physical Review Letters, Vol. 95, Issue 11; Other Information: DOI: 10.1103/PhysRevLett.95.110408; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
FERMI GAS
FERMIONS
LITHIUM 6
MAGNETIC FIELDS
MEAN-FIELD THEORY
MOLECULAR STRUCTURE
MOLECULES
RESONANCE
TEMPERATURE ZERO K