We address the problem of conductance fluctuations in real space. The nonlocal conductivity tensor and its correlation functions are calculated from the Kubo formula and are shown to exhibit long-ranged behavior. We offer a physical interpretation of our results. The results are used to calculate the long-range spatial correlations in the current density.

• Received 30 June 1987

DOI:https://doi.org/10.1103/PhysRevB.37.6701