Black Holes: Information Loss But No Paradox

TL;DR

This paper argues that collapse theories like CSL can resolve the black hole information paradox, supported by explicit calculations using the CGHS model and ideas about quantum gravity.

Contribution

It provides a detailed calculation showing how collapse theories can address the black hole information loss paradox within a simplified model.

Findings

Collapse theories can resolve the information paradox.

Explicit calculations support the resolution.

Quantum gravity ideas relate to singularity behavior.

Abstract

The process of black hole evaporation resulting from the Hawking effect has generated an intense controversy regarding its potential conflict with quantum mechanics' unitary evolution. In a recent couple of works of a collaboration involving one of us, we have revised the controversy with the aims of, on the one hand, clarifying some conceptual issues surrounding it, and, at the same time, arguing that collapse theories have the potential to offer a satisfactory resolution of the so-called paradox. Here we show an explicit calculation supporting this claim using a simplified model of black hole creation and evaporation, known as the CGHS model, together with a dynamical reduction theory, known as CSL, and some speculative, but seemingly natural ideas about the role of quantum gravity in connection with the would-be singularity. This work represents a specific realization of general ideas first discussed in [1].