Work

Impact of Quantum Gravity on the UV Sensitivity of Extremal Black Holes

Year: 2026

Type: article

Abstract: ABSTRACT Recent work has revealed that extremal Kerr black holes may exhibit a sensitivity to higher‐derivative corrections to Einstein's equations, displaying singularities in the tidal forces at the horizon. However, in a purely gravitational context, this “ultraviolet sensitivity” translates into a strong dependence on the Wilson coefficients in the low‐energy effective field theory. These, in turn, are fixed by the underlying theory of quantum gravity in the ultraviolet. We find a prediction for these coefficients within the framework of asymptotically safe quantum gravity, and show that, if the quantum gravity scale is trans‐Planckian, this horizon‐scale ultraviolet sensitivity is avoided.

Source: Fortschritte der Physik

DOI: 10.1002/prop.70101

Authors: Francesco Del Porro, Francesco Ferrarin, Alessia Platania

Institution: University of Copenhagen

Language: English

Topic: Black Holes and Theoretical Physics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,460

Funders: Villum Fonden, National Research Foundation, Danmarks Grundforskningsfond