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.
Bibliografisk noteFunding Information:
Funding: A.E. is supported by a grant by Villum Fonden under grant number (29405) and a grant by the DFG under grant no. Ei/1037-1. J.N.B. is supported by the German Academic Scholarship Foundation.