Global and local perspectives of gravitationally assisted negative-phase-velocity propagation of electromagnetic waves in vacuum

Akhlesh Lakhtakia, Tom G. Mackay, Sandi Setiawan

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Consistently with the Einstein equivalence principle and using an electromagnetic formulation first suggested by Tamm, we show that a local observer cannot observe negative-phase-velocity (NPV) propagation of electromagnetic waves in vacuum, whereas a global observer can appreciate that phenomenon. Using the specific example of the Kerr metric, we also demonstrate the possibility of NPV propagation within the ergosphere of a rotating black hole.

Original languageEnglish (US)
Pages (from-to)89-96
Number of pages8
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume336
Issue number2-3
DOIs
StatePublished - Mar 7 2005

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phase velocity
electromagnetic radiation
vacuum
propagation
equivalence
electromagnetism
formulations

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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abstract = "Consistently with the Einstein equivalence principle and using an electromagnetic formulation first suggested by Tamm, we show that a local observer cannot observe negative-phase-velocity (NPV) propagation of electromagnetic waves in vacuum, whereas a global observer can appreciate that phenomenon. Using the specific example of the Kerr metric, we also demonstrate the possibility of NPV propagation within the ergosphere of a rotating black hole.",
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