Global and local perspectives of gravitationally assisted negative-phase-velocity propagation of electromagnetic waves in vacuum
arXiv:physics/0409159 · doi:10.1016/j.physleta.2005.01.014
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.
References in corpus (3)
Cited by in corpus (12)
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