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

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

2004-04-19

arxiv.org/abs/cond-mat/0404429v3

Phys. Rev. A 70, 033609 (2004)

Physics

Condensed Matter

Statistical Mechanics

Minor changes -- to match the final published version

Scientific paper

10.1103/PhysRevA.70.033609

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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