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Ultracold Fermion Cooling Cycle using Heteronuclear Feshbach Resonances

M. A. Morales·N. Nygaard·J. E. Williams·Charles W. Clark
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Abstract

We consider an ideal gas of Bose and Fermi atoms in a harmonic trap, with a Feshbach resonance in the interspecies atomic scattering that can lead to formation of fermionic molecules. We map out the phase diagram for this three-component mixture in chemical and thermal equilibrium. Considering adiabatic association and dissociation of the molecules, we identify a possible cooling cycle, which in ideal circumstances can yield an exponential increase of the phase-space density.

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M. A. Morales, N. Nygaard, J. E. Williams, Charles W. Clark. 2004-08-15. Ultracold Fermion Cooling Cycle using Heteronuclear Feshbach Resonances. https://doi.org/10.1088/1367-2630%2F7%2F1%2F087

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