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- W4283737939 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." @default.
- W4283737939 created "2022-07-02" @default.
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- W4283737939 date "2022-07-18" @default.
- W4283737939 modified "2023-10-18" @default.
- W4283737939 title "Yukawa black holes from interacting vacuum" @default.
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- W4283737939 doi "https://doi.org/10.1088/1361-6382/ac7d8e" @default.
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