No firewalls in quantum gravity: the role of discreteness of quantum geometry in resolving the information loss paradox

TL;DR

This paper proposes that in quantum gravity models with discrete space-time structures, black hole evaporation can be described as a unitary process that preserves information through correlations with fundamental pre-geometric structures, avoiding firewalls.

Contribution

It introduces a framework where discreteness of quantum geometry ensures unitarity in black hole evaporation without firewalls or information loss.

Findings

Black hole evolution is unitary in discrete quantum gravity models.

Information is preserved via correlations with fundamental pre-geometric structures.

The approach avoids the firewall paradox by leveraging space-time discreteness.

Abstract

In an approach to quantum gravity where space-time arises from coarse graining of fundamentally discrete structures, black hole formation and subsequent evaporation can be described by a unitary evolution without the problems encountered by the standard remnant scenario or the schemes where information is assumed to come out with the radiation while evaporation (firewalls and complementarity). The final state is purified by correlations with the fundamental pre-geometric structures (in the sense of Wheeler) which are available in such approaches, and, like defects in the underlying space-time weave, can carry zero energy.