Quantum leaps of black holes: Magnifying glasses of quantum gravity

TL;DR

This paper argues that classical black holes, Hawking radiation, and geometry quantization cannot coexist simultaneously, and suggests that geometry quantization could amplify quantum gravity effects to observable levels, offering new insights into black hole extremality.

Contribution

It presents a conceptual analysis showing the incompatibility of classical, semi-classical, and quantum descriptions of black holes and proposes that geometry quantization could make quantum gravity effects observable.

Findings

Geometry quantization magnifies quantum gravity features.

Incompatibility of classical, semi-classical, and quantum black hole descriptions.

Potential quantum route to black hole extremality.

Abstract

We show using simple arguments, that the conceptual triad of a {\it classical} black hole, semi-classical Hawking emission and geometry quantization is inherently, mutually incompatible. Presence of any two explicitly violates the third. We argue that geometry quantization, if realized in nature, magnifies the quantum gravity features hugely to catapult them into the realm of observational possibilities. We also explore a quantum route towards extremality of the black holes.