Loop quantum black hole extensions within the improved dynamics

TL;DR

This paper explores an improved loop quantum gravity model for black holes, showing that quantum effects remove singularities and allow the continuation into white hole regions, aligning with prior quantum gravity scenarios.

Contribution

It introduces an improved quantization scheme for spherically symmetric loop quantum gravity that effectively resolves black hole singularities and extends spacetime into white holes.

Findings

Singularity is eliminated in the quantum model.

Quantum states approximate classical general relativity with an effective anisotropic fluid.

Spacetime extends into a white hole region after singularity removal.

Abstract

We continue our investigation of an improved quantization scheme for spherically symmetric loop quantum gravity. We find that in the region where the black hole singularity appears in the classical theory, the quantum theory contains semi-classical states that approximate general relativity coupled to an effective anisotropic fluid. The singularity is eliminated and the space-time can be continued into a white hole space-time. This is similar to previously considered scenarios based on a loop quantum gravity quantization.