TRANSPORT OF DIPOLAR EXCITONS IN DISORDERED-SYSTEMS

We study the interaction of dipolar excitons in a disordered lattice w ith a classically fluctuating bath to elucidate the effects of dephasi ng on phenomena connected with Anderson localization. We find general agreement with recent approximate analytical theory - the existence of incipient localization for dipolar excitons for a sufficiently disord ered lattice and for states beyond a quasi-mobility edge. An interesti ng interplay with the band structure of dipolar excitons leads to some unusual results in the weakly disordered case.