CONSTRAINT ON LINEAR, SPATIOTEMPORALLY NONLOCAL, SPATIOTEMPORALLY NONHOMOGENEOUS CONSTITUTIVE RELATIONS

摘要

The structure of modern electromagnetic theory imposes a fundamental constraint on the constitutive relations which . describe linear material media. Here, in extension to previous work, we provide a proof of this algebraic constraint for the most general type of linear medium: one that is bianisotropic and spatiotemporally nonhomogeneous as well as spatiotempo-rally nonlocal.