Electromagnetic waves with negative phase velocity in Schwarzschild-de Sitter spacetime

T. G. Mackay, A. Lakhtakia, S. Setiawan

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)925-931
Number of pages7
JournalEurophysics Letters
Issue number6
StatePublished - Sep 15 2005

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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