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arXiv · 1201.5416

Few-body ultracold reactions in a Bose-Fermi mixture

Chen Zhang·Javier von Stecher·Chris H. Greene
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Abstract

The spectrum of two bosons and two fermions in a trap is calculated using a correlated-Gaussian basis throughout the range of a broad Fano-Feshbach resonance. The calculations provide a few-body solution to the magneto-association of fermionic Feshbach molecules. This solution is used to study the time evolution of the system as the scattering length changes, mimicking experiments with Bose-Fermi mixtures near Fano-Feshbach resonances. The structure of avoided crossings in the few-body spectrum enables an interpretation of the dynamics of the system as a sequence of Landau-Zener transitions. The calculated molecule formation rate is compared with experimental observations.

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Chen Zhang, Javier von Stecher, Chris H. Greene. 2012-01-25. Few-body ultracold reactions in a Bose-Fermi mixture. https://doi.org/10.1103/physreva.85.043615

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