Complete, Single-Horizon Quantum Corrected Black Hole Spacetime

TL;DR

This paper proposes a semi-classical polymerization approach to model non-singular black holes, replacing the singularity with a bounce and creating a spacetime that resembles universe creation scenarios.

Contribution

It introduces a novel polymerization method for the black hole interior that removes the singularity and results in a non-singular, single-horizon spacetime with a bouncing interior.

Findings

Removes black hole singularity via polymerization

Interior exhibits a microscopic bounce and indefinite expansion

Exterior closely matches classical Schwarzschild spacetime for large black holes

Abstract

We show that a semi-classical polymerization of the interior of Schwarzschild black holes gives rise to a tantalizing candidate for a non-singular, single horizon black hole spacetime. The exterior has non-zero quantum stress energy but closely approximates the classical spacetime for macroscopic black holes. The interior exhibits a bounce at a microscopic scale and then expands indefinitely to a Kantowski-Sachs spacetime. Polymerization therefore removes the singularity and produces a scenario reminiscent of past proposals for universe creation via quantum effects inside a black hole.