Yukawa black holes from interacting vacuum. (4th August 2022)

• Record Type: Journal Article
• Authors: Maier, Rodrigo
• Is Part Of: Classical and quantum gravity. Volume 39:Number 15(2022)
• Publication Date: 2022-08-04
• Subjects: black holes -- interacting vacuum -- general relativity; Quantum gravity -- Periodicals; Gravitation -- Periodicals; Relativity (Physics) -- Periodicals; Space and time -- Periodicals; Periodicals; 521.1
• DOI: 10.1088/1361-6382/ac7d8e
• Languages: English
• ISSNs: 0264-9381

Abstract

Abstract: In this paper we obtain an exact solution of Einstein field equations assuming an interaction between a vacuum component and the Maxwell field. The key feature of such interaction refers to a simple stress exchange so that the electromagnetic field naturally incorporates the Yukawa potential. It is shown that the resulting spacetime thus obtained can either be a naked singularity or a black hole with an inner Cauchy horizon R − and an exterior event horizon R + . For this latter configuration we examine the group velocity of test photons in the region R > R + . Beyond a lower bound for the frequency we show that superluminal velocities arise in a neighbourhood of the event horizon and that the coupling parameter of the interaction is actually connected to a nonvanishing rest mass for the photon.