DIFFUSION ASYMPTOTICS OF THE BETHE-SALPETER-EQUATION FOR ELECTROMAGNETIC-WAVES IN DISCRETE RANDOM-MEDIA

Authors
BARABANENKOV YN OZRIN VD
Citation
Yn. Barabanenkov et Vd. Ozrin, DIFFUSION ASYMPTOTICS OF THE BETHE-SALPETER-EQUATION FOR ELECTROMAGNETIC-WAVES IN DISCRETE RANDOM-MEDIA, Physics letters. A, 206(1-2), 1995, pp. 116-122
Citations number
18
Categorie Soggetti
Physics
Journal title
Physics letters. A → ACNP
ISSN journal
03759601
Volume
206
Issue
1-2
Year of publication
1995
Pages
116 - 122
Database
ISI
SICI code
0375-9601(1995)206:1-2<116:DAOTBF>2.0.ZU;2-W
Abstract
We present an exact expression for the diffusion constant of vector el ectromagnetic waves in a random medium of dielectric scatterers in the form of the Green-Kubo relation. The derivation is based on a proper version of the Ward-Takahashi identity for classical waves. The relati on between the density of states of the electromagnetic field and the absorption length in the model of weakly absorbing scatterers is discu ssed.