Role of interactions in time-of-flight expansion of atomic clouds from optical lattices
arXiv:1006.2042 · doi:10.1103/PhysRevA.82.023618
Abstract
We calculate the effect of interactions on the expansion of ultracold atoms from a single site of an optical lattice. We use these results to predict how interactions influence the interference pattern observed in a time of flight experiment. We find that for typical interaction strengths their influence is negligible, yet that they reduce visibility near a scattering resonance.
6 pages, 3 figures