|Title||Universal rate constants for reactive collisions of ultracold molecules|
|Publication Type||Journal Article|
|Year of Publication||2010|
|Authors||Z. Idziaszek, and P. S. Julienne|
|Journal||Phys. Rev. Lett.|
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)].