Vacuum polarization of the electromagnetic field near a rotating black hole

Details Vacuum polarization of the electromagnetic field near a rotating black hole Vacuum polarization of the electromagnetic field near a rotating black hole

Dec 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985phrvd..32.3150f&link_type=abstract

Physical Review D (Particles and Fields), Volume 32, Issue 12, 15 December 1985, pp.3150-3163

Physics

10

Black Holes

Scientific paper

The electromagnetic field contribution to the vacuum polarization near a rotating black hole is considered. It is shown that the problem of calculating the renormalized average value of the stress-energy tensor ren for the Hartle-Hawking vacuum state at the pole of the event horizon can be reduced to the problem of electro- and magnetostatics in the Kerr spacetime. An explicit expression for ren at the pole of the event horizon is obtained and its properties are discussed. It is shown that in the case of a nonrotating black hole the Page-Brown approximation for the electromagnetic stress-energy tensor gives a result which coincides at the event horizon with the exact value of ren. .AE

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