Inelastic Multiple Scattering of Interacting Bosons in Weak Random   Potentials
  We develop a diagrammatic scattering theory for interacting bosons in a three-dimensional, weakly disordered potential. We show how collisional energy transfer between the bosons induces the thermalization of the inelastic single-particle current which, after only few collision events, dominates over the elastic contribution described by the Gross-Pitaevskii ansatz. 
Tobias Geiger, Thomas Wellens, and Andreas Buchleitner
quant-ph cond-mat.dis-nn cond-mat.quant-gas