Volterra differential constitutive operators and locality considerations in electromagnetic theory

Dan Censor; Timor Melamed

doi:10.1117/12.472972

24 June 2002 Volterra differential constitutive operators and locality considerations in electromagnetic theory

Dan Censor, Timor Melamed

Proceedings Volume 4806, Complex Mediums III: Beyond Linear Isotropic Dielectrics; (2002) https://doi.org/10.1117/12.472972
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

Macroscopic Maxwell's theory for electrodynamics is an indeterminate set of coupled, vector, partial differential equations. This infrastructure requires the supplement of constitutive equations. Recently, a general framework has been suggested, taking into account dispersion, inhomogeneity and nonlinearity, in which the constitutive equations are posited as differential equations involving the differential operators based on the Volterra functional series. The validity of such representations needs to be examined. Here it is shown that for such representations to be effective, the spatiotemporal functions associated with the Volterra differential operators must be highly localized, or equivalently, widely extended in the transform space. This is achieved by exploiting Delta-function expansions, leading in a natural way to polynomial differential operators. The Four-vectors Minkowski space is used throughout, facilitating general results and compact notation.

Citation Download Citation

Dan Censor and Timor Melamed "Volterra differential constitutive operators and locality considerations in electromagnetic theory", Proc. SPIE 4806, Complex Mediums III: Beyond Linear Isotropic Dielectrics, (24 June 2002); https://doi.org/10.1117/12.472972

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