A comment on the dynamics of excitation trapping in molecular crystals

In this paper we consider the long-time trapping rate, by a deep sink, of an excitation which migrates incoherently in a one-dimensional molecular crystal. The approaches based on the first passage time version of the continuous time random walk and on the master equation formalism are compared and put in a unified framework. Time domains are predicted for the different behaviors of the trapping rates for both one- and two-dimensional systems.