Volume 71, Number 6, September 2005
|Page(s)||925 - 931|
|Section||Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics|
|Published online||10 August 2005|
Electromagnetic waves with negative phase velocity in Schwarzschild-de Sitter spacetime
School of Mathematics, University of Edinburgh - Edinburgh EH9 3JZ, UK
2 Department of Engineering Science and Mechanics Pennsylvania State University - University Park, PA 16802-6812, USA
Accepted: 9 July 2005
The propagation of electromagnetic plane waves with negative phase velocity (NPV) is considered in Schwarzschild-(anti-)de Sitter spacetime. It is demonstrated that NPV propagation occurs in Schwarzschild-de Sitter spacetime at lower values of the cosmological constant than is the case for de Sitter spacetime. Furthermore, we report that neither is NPV propagation observed in Schwarzschild-anti-de Sitter spacetime, nor is it possible outside the event horizon of a Schwarzschild black hole.
PACS: 41.20.Jb – Electromagnetic wave propagation; radiowave propagation / 04.40.Nr – Einstein-Maxwell spacetimes, spacetimes with fluids, radiation or classical fields / 98.80.-k – Cosmology
© EDP Sciences, 2005
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