Kerr Black Holes within a Modified Theory of Gravity
by
Peter O. Hess 1,2,* and Enrique López-Moreno 3
Peter O. Hess 1,2,* and Enrique López-Moreno 3
1
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Ciudad de México 04513, Mexico
2
Frankfurt Institute for Advanced Studies, J.W. von Goethe University, 60323 Hessen, Germany
3
Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad de México 04510, Mexico
*
Author to whom correspondence should be addressed.
Universe 2019, 5(9), 191; https://doi.org/10.3390/universe5090191
Received: 6 July 2019 / Revised: 16 August 2019 / Accepted: 24 August 2019 / Published: 28 August 2019
(This article belongs to the Special Issue Rotation Effects in Relativity)
The Kerr black hole is studied within a modified theory of gravity, which adds the effects of vacuum fluctuations near a black hole. These vacuum fluctuations are treated as a dark energy. A parameter is introduced to account for these fluctuations. It is zero for the standard theory and acquires a maximal value, just before there would be no event horizon. The existence of an event horizon not only depends on the value of this parameter, but also on the spin of the black hole. In addition, we study the existence of a light-ring. We also elaborate on the relation of the appearance and vanishing of the event horizon and light-ring to phase transitions.
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MDPI and ACS Style
Hess, P.O.; López-Moreno, E. Kerr Black Holes within a Modified Theory of Gravity. Universe 2019, 5, 191.
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