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Radio-Frequency Transitions on Weakly-Bound Ultracold Molecules

Cheng Chin·Paul S. Julienne
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Abstract

We show that radio-frequency spectroscopy on weakly-bound molecules is a powerful and sensitive tool to probe molecular energy structure as well as atomic scattering properties. An analytic expression of the rf excitation lineshape is derived, which in general contains a bound-free component and a bound-bound component. In particular, we show that the bound-free process strongly depends on the sign of the scattering length in the outgoing channel and acquires a Fano-type profile near a Feshbach resonance. The derived lineshapes provide an excellent fit to both the numerical calculation and the experimental measurements.

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Cheng Chin, Paul S. Julienne. 2004-08-11. Radio-Frequency Transitions on Weakly-Bound Ultracold Molecules. https://doi.org/10.1103/physreva.71.012713

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