Phys. Rev. A 70, 033609 (2004) [4 pages]Coherent molecular bound states of bosons and fermions near a Feshbach resonanceReceived 8 April 2004; published 22 September 2004 We analyze molecular bound states of atomic quantum gases near a Feshbach resonance. A simple, renormalizable field theoretic model is shown to have exact solutions in the two-body sector, whose binding energy agrees well with observed experimental results in both Bosonic and Fermionic cases. These solutions, which interpolate between BEC and BCS theories, also provide a more general variational ansatz for resonant superfluidity and related problems. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.70.033609
DOI:
10.1103/PhysRevA.70.033609
PACS:
03.75.Nt, 05.30.−d, 39.25.+k, 67.40.−w
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