Black Hole Evaporation in Loop Quantum Gravity

TL;DR

This paper reviews how Loop Quantum Gravity provides a conceptual framework and key results for understanding black hole evaporation, emphasizing differences from other approaches and summarizing the current status of the field.

Contribution

It offers a broad overview of the main ideas and concrete results in Loop Quantum Gravity related to black hole evaporation, highlighting its distinctive features.

Findings

LQG offers a unique perspective on black hole evaporation.

Key features of LQG distinguish it from other quantum gravity approaches.

The review summarizes the current status and main results in the field.

Abstract

The conference \emph{Black Holes Inside and Out} marked the 50th anniversary of Hawking's seminal paper on black hole radiance. It was clear already from Hawking's analysis that a proper quantum gravity theory would be essential for a more complete understanding of the evaporation process. This task was undertaken in Loop Quantum Gravity (LQG) two decades ago and by now the literature on the subject is quite rich. The goal of this contribution is to summarize a mainstream perspective that has emerged. The intended audience is the broader gravitational physics community, rather than quantum gravity experts. Therefore, the emphasis is on conceptual issues, especially on the key features that distinguish the LQG approach, and on concrete results that underlie the paradigm that has emerged. This is \emph{not} meant to be an exhaustive review. Rather, it is a broad-brush stroke portrait of the present status. Further details can be found in the references listed.