Geometrical optics response tensors and the transport of the wave energy density

Autor:	M Bornatici, O Maj
Rok vydání:	2003
Předmět:	Physics Exact solutions in general relativity Classical mechanics Nuclear Energy and Engineering Cartesian tensor Cauchy stress tensor Stress–energy tensor Viscous stress tensor Condensed Matter Physics Tensor density Electromagnetic stress–energy tensor Tensor field
Zdroj:	Plasma Physics and Controlled Fusion. 45:1511-1521
ISSN:	1361-6587 0741-3335
DOI:	10.1088/0741-3335/45/8/309
Popis:	Two forms of the transport equation for the wave energy density inherent in two (apparently diverse) formulations of geometrical optics (GO) are discussed on the basis of the relationships among the plane-wave dielectric tensor, the effective dielectric tensor and the effective conductivity tensor. For a generic space- and time-varying medium, a novel relationship between the dielectric tensor and the conductivity tensor is obtained whereupon the equivalence of the two GO formulations is established. The conditions for which either the wave action density or the wave energy density is conserved are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bdfea8400d253ef88d37333406d8ac11 https://doi.org/10.1088/0741-3335/45/8/309 Zobrazit plný text záznamu