Ultracold Li+Li2 collisions:: Bosonic and fermionic cases -: art. no. 033201

We have carried out quantum dynamical calculations of vibrational quenching in Li+Li-2 collisions for both bosonic Li-7 and fermionic Li-6. These are the first ever such calculations involving fermionic atoms. We find that for the low initial vibrational states considered here (vless than or equal to3), the quenching rates are not suppressed for fermionic atoms. This contrasts with the situation found experimentally for molecules formed via Feshbach resonances in very high vibrational states.