EFFECT OF TRAPPING ON TRANSPORT COHERENCE .2. CONTINUOUS-TIME RANDOM-WALK TREATMENT

Our recent investigation led to the conclusion that there is much agre ement among theories of the excitation transfer: the generalized maste r equation (GME), the Haken-Strobl-Reineker stochastic-Liouville-equat ion theory, and the Grover-Silbey microscopic theory. Trapping effects influence memory functions entering the GME. Decoupling of the rest o f the system from the sink in the nearly coherent regime for large tra pping rates changes the form of the pausing-time-distribution function s and probability densities in the continuous-time random-walk method.