Nonlinear electromagnetic fluctuations in a nonequilibrium plasma

Fluctuations in a nonequilibrium plasma are considered with due regard for nonlinear wave interaction. The electrodynamic properties of the plasma are described by tensor nonlinear susceptibilities. For a fluctuational electric field an inhomogeneous nonlinear equation is obtained on the basis of the microscopic approach; in this equation sources are determined by the fluctuational current due to the random motion of separate particles in the plasma. The equation is used to obtain a set of inhomogeneous integral equations, which determine unambigously the sequence of the correlation functions for the fluctuational field in the plasma