Effective Dielectric Permittivity With Respect To Second Field Moments In Randomly Inhomogeneous Media
V. Brekhovskikh, Valerian I. Tatarskii · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1986
The description of the mean field in randomly inhomogeneous media can be made using the "effective dielectric permittivity" tensor. This well known approach implies the interpretation of the mean electric field as a regular field in some "effective" medium with spatial dispersion, where the electric induction and field vectors are related by formula