Atomic, Molecular, and Optical Physics Seminar

Feshbach Resonant Interactions in 40K and 6Li Degenerate Fermi Gases

Dr. Matt Mackie

University of Aarhus, Denmark

We examine a system of Fermi degenerate atoms coupled to bosonic molecules by a Feshbach resonance, focusing on the superfluid transition to a molecular Bose--Einstein condensate dressed by Cooper pairs of atoms. This problem raises an interest because it is unclear at present whether bimodal density distributions observed recently in 40K and 6Li are due to a condensate of bosonic molecules or a condensate of Cooper-paired fermionic atoms, or some fraction of both. We find that bosonic molecules are entirely responsible for the 40K bimodal distributions, whereas Cooper pairs are the most likely culprit in the 6Li case.

Thursday, November 18, 2004
2:00 PM
Gant Science Complex
Physics Department
Room P121

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