FLUCTUATIONS IN NON-EQUILIBRIUM ELECTRON GAS: EFFECT OF QUANTUM STATISTICS

摘要

Here we develop a mathematical apparatus to describe quasi-classical fluctuations inna non-equilibrium electron gas with electron-electron collisions. We substantiate thenmethod by deriving, from general principles of quantum kinetics, an equation recentlynproposed by us for an equal-time electron-electron correlation function. The derivationnis performed using the kinetic diagram technique. In degenerate non-equilibrium gas, thentheory predicts that there exists a specific equal-time correlation between electrons. Duento the prevalence of small-angle electron-electron scattering, the equation in questionntakes a rather simple and treatable form (the Coulomb-type electron-electron interactionnstands out against the background of all other types of interaction as one that does notngenerate, in the framework of quasi-classical approach, any direct exchange effects).