Collective molecule formation in a degenerate Fermi gas via a Feshbach resonance

Details Collective molecule formation in a degenerate Fermi gas via a Feshbach resonance Collective molecule formation in a degenerate Fermi gas via a Feshbach resonance

2004-06-16

arxiv.org/abs/physics/0406077v1

Phys. Rev. Lett. 92, 200402 (2004)

Physics

Atomic Physics

4 pages, 3 figures, 10+ references, accepted to PRL

Scientific paper

10.1103/PhysRevLett.92.200402

We model collisionless collective conversion of a degenerate Fermi gas into bosonic molecules via a Feshbach resonance, treating the bosonic molecules as a classical field and seeding the pairing amplitudes with random phases. A dynamical instability of the Fermi sea against association into molecules initiates the conversion. The model qualitatively reproduces several experimental observations {[Regal et al., Nature {\bf 424}, 47 (2003)]}. We predict that the initial temperature of the Fermi gas sets the limit for the efficiency of atom-molecule conversion.

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