Extracting Efimov physics from three-body recombination at finite energy

Yujun Wang, B.D. Esry
James R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, KS, USA

J.P. D'Incao
JILA, University of Colorado and NIST

We have identified energy-dependent features in the three-body recombination rate that can trace their origin to Efimov physics. These features manifest themselves as log-periodic sinusoidal modulations of the rates as a function of energy. This log-periodic behavior provides the link to Efimov physics. Using a model two-body interaction, we calculate the recombination rate numerically for identical bosons and for the Cs-Li mixture. We show, however, that the energy modulations are more clear in Cs+Cs+Li recombination. We will also discuss the issues important for observing these features experimentally.

This work was supported by the Chemical Sciences, Geosciences and Biosciences Division, Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy, and by the National Science Foundation.

Presented at DAMOP, May 2008, in State College, PA.


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