Some properties of the phenomenological relaxation modes of g-r noise

Abstract

Some properties are derived for the eigenvalues of the phenomenological relaxation matrix. The normal mode expressions for a thermal and steady state g-r process are discussed and partly improved. The tacid assumptions in the literature that the eigenvalues are always real and the plateau constants of the autovariance modes are positive are shown to be incorrect. Various forms for the relaxation matrix and their connections are discussed for systems with particle conservation (charge neutrality).