On the theory of nonlinear dielectrics

Abstract
A simple yet general prescription for finding the connections between phenomenological coefficients and susceptibilities for nonlinear dielectrics is found. In the linear realm the standard connections are recovered. The connections found between the nonlinear susceptibilities and phenomenological coefficients for isotropic polar media are found to differ from previous proposals, all of which rely on extensions of either the procedure of Onsager or of Kirkwood and Fröhlich. Application is made to two simple models; the first that of polar fluids, the second of nonpolar, polarizable fluids.

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