A comparison of superradiance and negative phase velocity phenomenons in the ergosphere of a rotating black hole

Sandi Setiawan, Tom G. Mackay, Akhlesh Lakhtakia

Research output: Contribution to journalArticle

17 Scopus citations


The propagation of electromagnetic plane waves with negative phase velocity (NPV) in the ergosphere of a rotating black hole has recently been reported. A comparison of NPV propagation and superradiance is presented. We show that, although both phenomenons involve negative energy densities, there are two significant differences between them.

Original languageEnglish (US)
Pages (from-to)15-21
Number of pages7
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Issue number1-4
StatePublished - Jun 20 2005


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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