TRANSPORT IN AN INHOMOGENEOUS INTERACTING ONE-DIMENSIONAL SYSTEM

Transport through a clean one-dimensional wire of interacting electron s connected to semi-infinite leads is investigated using a bosonizatio n approach. An incident electron is transmitted as a sequence of parti al charges. The de conductance is found to be entirely determined by t he properties of the leads. The dynamic nonlocal conductivity is rigor ously expressed in terms of the transmission. For abrupt variations of the interaction parameters at the junctions, the central wire acts as a For abrupt resonator. When one of the connected wires has a tendenc y towards superconducting order, partial Andreev reflection of an inci dent electron occurs.