On the viability of regular black holes

By R. Carballo-Rubio, F. Filippo, Stefano Liberati, Costantino Pacilio, Matt Visser. Journal of High Energy Physics, 2018

153 citations recorded by the source corpus.

The evaporation of black holes raises a number of conceptual issues, most of them related to the final stages of evaporation, where the interplay between the central singularity and Hawking radiation cannot be ignored. Regular models of black holes replace the central singularity with a nonsingular spacetime region, in which an effective classical geometric description is available. It has been argued that these models provide an effective, but complete, description of the evaporation of black holes at all times up to their eventual disappearance. However, here we point out that known models fail to be self-consistent: the regular core is exponentially unstable against perturbations with a finite timescale, while the evaporation time is infinite, therefore making the instability impossible to prevent. We also discuss how to overcome these difficulties, highlighting that this can be done only at the price of accepting that these models cannot be fully predictive regarding the final stages of evaporation.

Subfields: Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/bc3d0b4163c9ef1c5e1d1fc1dd74a89de6327d3c

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Citations in the corpus

Black-bounce to traversable wormhole (2018, background): “egular black hole geometries within the framework of general relativity, it pays to compile examples of various metrics of interest, and provide thorough analyses of their phenomenological properties [12,13]. As such, we propose the following candidate regular black hole specied by the spacetime met”
Regular Black Holes with Asymptotically Minkowski Cores (2019, background): “lar black hole we have [6]: ds2 = − 1− 2mr2 r3 +2mℓ2 +ℓ3 dt2 + dr2 1− 2mr2 r3+2mℓ2+ℓ3 + r2 dΩ2 2. (6.3) where in all three cases ℓ is some length scale, typically identiﬁed with the Planck length [7]. Now consider a direct comparison of the resulting Einstein tensors: • Bardeen: The Einstein tenso”
Phenomenological aspects of black holes beyond general relativity (2018, background): “[19] Raúl Carballo-Rubio, Francesco Di Filippo, Stefano”
Regular Black Holes From Pure Gravity (2024, unknown): “This is not something particular to our construction, but it has been argued to be a generic feature of regular black hole interiors [60, 61].”