Author(s)

Alfred Wünsche

Institut für Physik, Humboldt-Universität, Berlin, Germany.

A new relativistically covariant approach is discussed for the derivation of local conservation theorems for homogeneous anisotropic and, in particular, dispersive media. We start from a three-dimensional operator equation for the electric field and obtain mainly by coordinate-invariant methods the results basically expressed by the slowly varying amplitudes of the electric field. Apart from local energy and momentum conservation formulated by the energy-momentum conservation, we find a local conservation theorem for the action which is more general and which is the only one which remains also true for inhomogeneous media.

Spatial and Frequency Dispersion, Permittivity Tensor, Group Velocity, Cold Plasma, Coordinate-Invariant Methods, Lorentz Group, Lorentz Invariants

Wünsche, A. (2021) Relativistic-Covariant Energy-Momentum Tensor for Homogeneous Anisotropic Dispersive Media. Journal of Modern Physics, 12, 1866-1921. doi: 10.4236/jmp.2021.1213108.