  We provide the theoretical basis for understanding the phenomenon in which an
ultra cold atom incident on a possibly warm target will not stick, even in the
large $n$ limit where $n$ is the number of internal degrees of freedom of the
target. Our treatment is non-perturbative in which the full many-body problem
is viewed as a scattering event purely within the context of scattering theory.
The question of sticking is then simply and naturally identified with the
formation of a long lived resonance. One crucial physical insight that emerges
is that the many internal degrees of freedom serve to decohere the incident one
body wavefunction, thus upsetting the delicate interference process necessary
to form a resonance in the first place. This is the physical reason for not
sticking.
