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Efimov states near a Feshbach resonance

P. Massignan·H. T. C. Stoof
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Abstract

We describe three-body collisions close to a Feshbach resonance by taking into account two-body scattering processes involving both the open and the closed channel. We extract the atom-dimer scattering length and the three-body recombination rate, predicting the existence at negative scattering length of a sharp minimum in the recombination losses due to the presence of a shallow bound level. We obtain very good agreement with the experimental results in atomic 133Cs of Kraemer et al. [Nature 440, 315 (2006)], and predict the position of Efimov resonances in a gas of 39K atoms.

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P. Massignan, H. T. C. Stoof. 2008-10-08. Efimov states near a Feshbach resonance. https://doi.org/10.1103/physreva.78.030701

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