Ultracold atom-molecule collisions with fermionic atoms

Elastic and inelastic properties of weakly bound s - and p -wave molecules of fermionic atoms that collide with a third atom are investigated. Analysis of calculated collisional properties of s -wave dimers of fermions in different spin states permit us to compare and highlight the physical mechanisms that determine the stability of s -wave and p -wave molecules. In contrast to s -wave molecules, the collisional properties of p -wave molecules are found to be largely insensitive to variations of the p -wave scattering length, and these collisions will usually result in short molecular lifetimes. We also discuss the importance of this result for both theories and experiments involving degenerate Fermi gases.