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Coherent molecular bound states of bosons and fermions near a Feshbach resonance

P. D. Drummond·K. V. Kheruntsyan
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Abstract

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.

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P. D. Drummond, K. V. Kheruntsyan. 2004-09-23. Coherent molecular bound states of bosons and fermions near a Feshbach resonance. https://doi.org/10.1103/physreva.70.033609

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