Electron Transport in Disordered Polymeric and Biological Systems

In current models of electron transport through proteins and other polymers, calculations are performed by finding a single path which dominates. This model may not be applicable for certain proteins, in which disorder caused by differences in couplings between sites or the length of paths lead to a wide distribution of Green's functions. As in other disordered systems, the quantity which is averaged over disorder has a fundamental effect on the physical picture. We examine two different experimental regimes and comment on the role of disorder.