Stability of fermionic Feshbach molecules in a Bose-Fermi mixture

Alexander V. Avdeenkov, Daniele C. E. Bortolotti, John L. Bohn
2006 Physical Review A. Atomic, Molecular, and Optical Physics  
In the wake of successful experiments in Fermi condensates, experimental attention is broadening to study resonant interactions in degenerate Bose-Fermi mixtures. Here we consider the properties and stability of the fermionic molecules that can be created in such a mixture near a Feshbach resonance (FR). To do this, we consider the two-body scattering matrix in the many-body environment, and assess its complex poles. The stability properties of these molecules strongly depend on their
more » ... mass motion, because they must satisfy Fermi statistics. At low centre-of-mass momenta the molecules are more stable than in the absence of the environment (due to Pauli-blocking effects), while at high centre-of-mass momenta nontrivial many body effects render them somewhat less stable.
doi:10.1103/physreva.74.012709 fatcat:6pt3fjxvwfg6ravd4pqgpj7sba