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Universal rate constants for reactive collisions of ultracold molecules

TitleUniversal rate constants for reactive collisions of ultracold molecules
Publication TypeJournal Article
Year of Publication2010
AuthorsZ. Idziaszek, and P. S. Julienne
JournalPhys. Rev. Lett.
Date Published3/2010

A simple quantum defect model gives analytic expressions for the complex scattering length and threshold collision rates of ultracold molecules. If the probability of reaction in the short-range part of the collision is high, the model gives universal rate constants for s- and p-wave collisions that are independent of short-range dynamics. This model explains the magnitudes of the recently measured rate constants for collisions of two ultracold 40K87Rb molecules, or an ultracold 40K atom with the 40K87Rb molecule [Ospelkaus et al., Science 327, 853 (2010)].


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