4.4 Article

Towards Black-Hole Singularity-Resolution in the Lorentzian Gravitational Path Integral

Journal

UNIVERSE
Volume 7, Issue 3, Pages -

Publisher

MDPI
DOI: 10.3390/universe7030048

Keywords

quantum gravity; black holes; Lorentzian path integral

Funding

  1. Villum Fonden [29405]
  2. DFG [Ei/1037-1]
  3. German Academic Scholarship Foundation

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Quantum gravity can resolve black hole singularities through destructive interference, while the Einstein action does not offer the same mechanism for resolution.
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.

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