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

Sandi Setiawan; Tom G. Mackay; Akhlesh Lakhtakia

doi:10.1016/j.physleta.2005.04.064

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

Sandi Setiawan·Tom G. Mackay·Akhlesh Lakhtakia

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Abstract

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.

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Sandi Setiawan, Tom G. Mackay, Akhlesh Lakhtakia. 2006-11-23. A comparison of superradiance and negative-phase-velocity phenomenons in the ergosphere of a rotating black hole. https://doi.org/10.1016/j.physleta.2005.04.064

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