Dressed feshbach molecules in the BEC-BCS crossover

We present the random phase approximation (RPA) theory of the Bose-Einstein-condensation-Bardeen-Cooper-Schrieffer crossover in an atomic Fermi gas near a Feshbach resonance that includes the relevant two-body atomic physics exactly. This allows us to determine the probability Z for the dressed mole...

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Bibliographic Details
Published in:Physical review letters 2005-12, Vol.95 (26), p.260407.1-260407.4, Article 260407
Main Authors: ROMANS, M. W. J, STOOF, H. T. C
Format: Article
Language:English
Subjects:
ATOMIC PHYSICS
BCS THEORY
BOSE-EINSTEIN CONDENSATION
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COMPARATIVE EVALUATIONS
Exact sciences and technology
FERMI GAS
FERMIONS
LITHIUM 6
MOLECULES
Physics
PROBABILITY
RANDOM PHASE APPROXIMATION
RESONANCE
TWO-BODY PROBLEM
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Summary:We present the random phase approximation (RPA) theory of the Bose-Einstein-condensation-Bardeen-Cooper-Schrieffer crossover in an atomic Fermi gas near a Feshbach resonance that includes the relevant two-body atomic physics exactly. This allows us to determine the probability Z for the dressed molecules in the Bose-Einstein condensate to be in the closed channel of the Feshbach resonance and to compare with the recent experiments of Partridge et al. [95, 020404 (2005)] with {sup 6}Li, who have measured the same quantity.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.95.260407