Atom-molecule equilibration in a degenerate Fermi gas with resonant interactions

Details Atom-molecule equilibration in a degenerate Fermi gas with resonant interactions Atom-molecule equilibration in a degenerate Fermi gas with resonant interactions

2004-03-19

arxiv.org/abs/cond-mat/0403503v3

Physics

Condensed Matter

Other Condensed Matter

Updated manuscript on July 5, 2004. Four pages with three embedded figures

Scientific paper

10.1088/0953-4075/37/21/L01

We present a nonequilibrium kinetic theory describing atom-molecule population dynamics in a two-component Fermi gas with a Feshbach resonance. Key collision integrals emerge that govern the relaxation of the atom-molecule mixture to chemical and thermal equilibrium. Our focus is on the pseudogap regime where molecules form above the superfluid transition temperature. In this regime, we formulate a simple model for the atom-molecule population dynamics. The model predicts the saturation of molecule formation that has been observed in recent experiments, and indicates that a dramatic enhancement of the atom-molecule conversion efficiency occurs at low temperatures.

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