Dissociation of Feshbach Molecules into Different Partial Waves

Details Dissociation of Feshbach Molecules into Different Partial Waves Dissociation of Feshbach Molecules into Different Partial Waves

2005-07-25

arxiv.org/abs/cond-mat/0507580v2

Phys. Rev. A 72, 052707 (2005)

Physics

Condensed Matter

Statistical Mechanics

Added Refs.[32-38]

Scientific paper

10.1103/PhysRevA.72.052707

Ultracold molecules can be associated from ultracold atoms by ramping the magnetic field through a Feshbach resonance. A reverse ramp dissociates the molecules. Under suitable conditions, more than one outgoing partial wave can be populated. A theoretical model for this process is discussed here in detail. The model reveals the connection between the dissociation and the theory of multichannel scattering resonances. In particular, the decay rate, the branching ratio, and the relative phase between the partial waves can be predicted from theory or extracted from experiment. The results are applicable to our recent experiment in 87Rb, which has a d-wave shape resonance.

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