To kinetics of electromagnetic field in medium taking into account fluctuations

Abstract

Kinetic equation for statistical operator of electromagnetic field in equilibrium medium consisting of charged particles has been obtained in quasirelativistic approximation. Interpretation of the results in terms of photon in medium is given. Spectrum of the photons and amplitude of decay one photon into two have been calculated. Obtained kinetic equation can be applied to studying fluctuations of the field.