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“Faster than light” photons and rotating black holes / R.D. Daniels; Graham Shore

Physics Letters B, Volume: "B367", Issue: 1-4, Pages: 75 - 83

Swansea University Author: Graham, Shore

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Abstract

The effective action for QED in curved spacetime includes equivalence principle violating interactions between the electromagnetic field and the spacetime curvature. These interactions admit the possibility of superluminal yet causal photon propagation in gravitational fields. In this paper, we exte...

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Published in: Physics Letters B
ISSN: 03702693
Published: 1995
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa31908
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Abstract: The effective action for QED in curved spacetime includes equivalence principle violating interactions between the electromagnetic field and the spacetime curvature. These interactions admit the possibility of superluminal yet causal photon propagation in gravitational fields. In this paper, we extend our analysis of photon propagation in gravitational backgrounds to the Kerr spacetime describing a rotating black hole. The results support two general theorems -- a polarisation sum rule and a `horizon theorem'. The implications for the stationary limit surface bounding the ergosphere are also
College: College of Science
Issue: 1-4
Start Page: 75
End Page: 83