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Thermal equilibrium and efficient evaporation of an ultracold atom-molecule mixture

Cheng Chin·Rudolf Grimm
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Abstract

We derive the equilibrium conditions for a thermal atom-molecule mixture near a Feshbach resonance. Under the assumption of low collisional loss, thermodynamical properties are calculated and compared to the measurements of a recent experiment on fermionic lithium experiment. We discuss and evaluate possible collision mechanisms which can lead to atom-molecule conversion. Finally, we propose a novel evaporative cooling scheme to efficiently cool the molecules toward Bose-Einstein condensation.

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Cheng Chin, Rudolf Grimm. 2003-09-03. Thermal equilibrium and efficient evaporation of an ultracold atom-molecule mixture. https://doi.org/10.1103/physreva.69.033612

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