A relation of response functions and correlation functions to the random walk problem in μ-space for uniform systems in nonequilibrium transport theory

The Boltzmann equation for a uniform system of nondegenerate electrons in a constant field containing an additive, normconserving perturbation term gk is solved by comparison with the Green's function solution of the unperturbed equation. Linear response coefficients can be expressed by the conditional probability as a linear functional in gk. © 1971 Springer-Verlag.