'Faster than light' photons and rotating black holes
Aug, 199512 pages
Published in:
- Phys.Lett.B 367 (1996) 75-83
e-Print:
- gr-qc/9508048 [gr-qc]
Report number:
- SWAT-95-71,
- CERN-TH-95-229
Citations per year
Abstract: (Elsevier)
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 discussed.Note:
- Plain TeX, 12 pages, 1 figure Report-no: SWAT 95/71 CERN-TH/95-229
- quantum electrodynamics
- effective action
- gravitation: background field
- photon: propagator
- photon: velocity
- postulated particle: tachyon
- black hole: horizon
- space-time: Kerr
- polarization: sum rule
- sum rule: polarization
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