Universe 2021, 7(3), 48; https://0-doi-org.brum.beds.ac.uk/10.3390/universe7030048 - 27 Feb 2021
Abstract
Quantum gravity is expected to resolve the singularities of classical general relativity. Based on destructive interference of singular spacetime-configurations in the path integral, we find that higher-order curvature terms may allow to resolve black-hole singularities both in the spherically symmetric and axisymmetric case.
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Quantum gravity is expected to resolve the singularities of classical general relativity. Based on destructive interference of singular spacetime-configurations in the path integral, we find that higher-order curvature terms may allow to resolve black-hole singularities both in the spherically symmetric and axisymmetric case. In contrast, the Einstein action does not provide a dynamical mechanism for singularity-resolution through destructive interference of these configurations.
Full article
(This article belongs to the Special Issue Asymptotic Safety in Quantum Gravity)