Bridged-assisted electron transfer. Random matrix theory approach

We discuss the effective donor/acceptor coupling for a bridged electron transfer system with a site-diagonal disorder of bridge energies. The average spectral properties of the system are discussed by using the Wegner model (Anderson's type tight-binding Hamiltonian (TBH))for the electronic part of the problem. Spectral properties of the system are discussed using the concept of the functional inverse of the resolvent (``Blue's function'', introduced by Zee) for various limits of noise versus site-site coupling ratio.