2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/27904The mean-field theory for lossy nonlinear composites, described by complex and field-dependent dielectric functions, is presented. By using the spectral representation of linear composites with identical microstructure, we develop self-consistent equations for the effective response. We examine two types of microstructure, namely, the Maxwell-Garnett approximation and the effective medium approximation to illustrate the theory.11 pages, LaTeX format, 2 figures, accepted for publication by Solid State Communications 18 November 1997Soft Condensed MatterDisordered Systems and Neural NetworksMaterials Sciencetext