A GENERALIZED-MODEL OF NONTHERMAL NOISE IN THE ELECTROMAGNETIC ENVIRONMENT OF SMALL-CAPACITANCE TUNNEL-JUNCTIONS

We present a generalization of the existing theory for tunneling in th e presence of an electromagnetic environment, which applies to arbitra ry networks of linear elements, with each impedance at its individual equilibrium temperature. The fluctuations of such an environment are n on-thermal. As an example we discuss the effect of high-temperature fl uctuations in the environment. We show that in general these fluctuati ons exhibit characteristics of Gaussian-correlated and white noise.