Many-body correlations in the kinetic theory of solids

Abstract

Multiquantum integral kinetic equations for the micropolarization and longitudinal di- electric function are derived with account of pair correlations. The Heisenberg equation of motion and fluctuation-dissipation theorem has been used to calculate a micropolarization. It has been shown that kinetic equation for a micropolarization may be represented as power series in fluctuations of the instantaneous plasma field near the mean field. Direct Coulomb pair correlations have been evaluated explicitly by means of fluctuation-dissipation theorem. The kinetic motion equation with regard for pair correlations has been used to derive a multiquantum integral equation for the complex order parameter k Δ in a superconductor.