Gravitation and electromagnetic wave propagation with negative phase velocity

Tom G. Mackay, Akhlesh Lakhtakia, Sandi Setiawan

Research output: Contribution to journalArticlepeer-review

47 Scopus citations


Gravitation has interesting consequences for electromagnetic wave propagation in vacuum. The propagation of plane waves with phase velocity directed opposite to the time-averaged Poynting vector is investigated for a generally curved spacetime. Conditions for such negative-phase-velocity (NPV) propagation are established in terms of the spacetime metric components for general and special cases. Implications of the negative energy density of NPV propagation are discussed.

Original languageEnglish (US)
Article number075
JournalNew Journal of Physics
StatePublished - Mar 8 2005

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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