Charge transport in quasi one dimensional aperiodic systems

We review theoretical strategies for the study of charge transport in quesi one dimensional systems. The approaches here presented adopt a tight binding scheme, are based on the renormalization-decimation method, and exploit transfer matrix, scattering matrix and Keldish Green's function formalism. Due to their efficiency and flexibility these merthods are particularily suitable to treat a wide class of systems. In this paper we describe some situations where the lack of periodicity deeply influences the electronic spectrum of the system and analyze quantum wires in the presence of disorder, topological defects, and surface roughness. We calculate also transmittivity and conductance of selected models of disordered wires and polymeric chains in the presence of local short-range order