Decoherence of Bose-Einstein condensates in microtraps
  We discuss the impact of thermally excited near fields on the coherent expansion of a condensate in a miniaturized electromagnetic trap.   Monte Carlo simulations are compared with a kinetic two-component theory and indicate that atom interactions can slow down decoherence. This is explained by a simple theory in terms of the condensate dynamic structure factor. 
Carsten Henkel and Simon A. Gardiner