Stability of fermionic Feshbach molecules in a Bose-Fermi mixture
Abstract
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 centre-of-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.
Cite
@article{arxiv.cond-mat/0604006,
title = {Stability of fermionic Feshbach molecules in a Bose-Fermi mixture},
author = {Alexander V. Avdeenkov and Daniele C. E. Bortolotti and John. L. Bohn},
journal= {arXiv preprint arXiv:cond-mat/0604006},
year = {2009}
}