UV completion and not quite black holes

Holdom, B. (2022) UV completion and not quite black holes. Il nuovo cimento C, 45 (2). pp. 1-5. ISSN 1826-9885

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Abstract

When it comes to black holes, the Einstein action gives us little choice. But the Einstein action should eventually be subsumed into a UV complete theory of gravity, and such a theory may provide an alternative description for what we know of as black holes. We consider the horizonless solutions called 2-2-holes that emerge from quadratic gravity. Within a Planck length of the would-be horizon, strong gravity and high curvatures quickly turn on. These solutions are very close to being completely black, but not quite. An ideal probe to test for not quite black holes are the low frequency gravitational waves that are excited in and around them when they are newly formed, as in the merger events observed by LIGO. We identify the generic features of the resulting gravitational wave echoes. We also consider how it is that quadratic gravity can provide a local quantum field theory for gravity.

Item Type:	Article
Subjects:	500 Scienze naturali e Matematica > 530 Fisica
Depositing User:	Marina Spanti
Date Deposited:	05 May 2022 09:27
Last Modified:	05 May 2022 09:27
URI:	http://eprints.bice.rm.cnr.it/id/eprint/21846

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