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University of Cambridge > Talks.cam > Irregular seminars in TCM > Atom-dimer and dimer-dimer scattering in fermionic mixtures near a narrow Feshbach resonance
Atom-dimer and dimer-dimer scattering in fermionic mixtures near a narrow Feshbach resonanceAdd to your list(s) Download to your calendar using vCal
If you have a question about this talk, please contact Joe Bhaseen. We develop a diagrammatic approach for solving few-body problems in heteronuclear fermionic mixtures near a narrow interspecies Feshbach resonance. We calculate s-, p-, and d-wave phaseshifts for the scattering of an atom by a weakly-bound dimer. The fermionic statistics of atoms and the composite nature of the dimer lead to a strong angular momentum dependence of the atom-dimer interaction, which manifests itself in a peculiar interference of the scattered s- and p-waves. This effect strengthens with the mass ratio and is remarkably pronounced in 40K-(40K-6Li) atom-dimer collisions. We calculate the scattering length for two dimers formed near a narrow interspecies resonance. Finally, we discuss the collisional relaxation of the dimers to deeply bound states and evaluate the corresponding rate constant as a function of the detuning and collision energy. This talk is part of the Irregular seminars in TCM series. This talk is included in these lists:
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