Resolving the wave-vector in negative refractive media: The sign of $\sqrt{Z}$
Materials Science
2009-11-10 v1 Optics
Abstract
We address the general issue of resolving the wave-vector in complex electromagnetic media including negative refractive media. This requires us to make a physical choice for the sign of a square-root imposed merely by conditions of causality. By considering the analytic behaviour of the wave-vector in the complex plane, it is shown that there are a total of eight physically distinct cases in the four quadrants of two Riemann sheets.
Keywords
Cite
@article{arxiv.cond-mat/0402570,
title = {Resolving the wave-vector in negative refractive media: The sign of $\sqrt{Z}$},
author = {S. Anantha Ramakrishna and Olivier J. F. Martin},
journal= {arXiv preprint arXiv:cond-mat/0402570},
year = {2009}
}
Comments
3 pages, 2 figures, RevTeX