Wave propagation in linear electrodynamics

Details Wave propagation in linear electrodynamics Wave propagation in linear electrodynamics

2000-05-05

arxiv.org/abs/gr-qc/0005018v1

Phys.Rev. D62 (2000) 044050

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

13 pages. Phys. Rev. D, to appear

Scientific paper

10.1103/PhysRevD.62.044050

The Fresnel equation governing the propagation of electromagnetic waves for the most general linear constitutive law is derived. The wave normals are found to lie, in general, on a fourth order surface. When the constitutive coefficients satisfy the so-called reciprocity or closure relation, one can define a duality operator on the space of the two-forms. We prove that the closure relation is a sufficient condition for the reduction of the fourth order surface to the familiar second order light cone structure. We finally study whether this condition is also necessary.

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