Black holes, information and decoherence

TL;DR

This paper discusses the experimental challenges in testing whether black holes destroy information, highlighting that such tests require capabilities to detect macroscopic superpositions, which are also relevant for understanding decoherence and wavefunction collapse.

Contribution

It establishes a link between black hole information experiments and the ability to manipulate macroscopic superpositions, connecting quantum foundations with black hole physics.

Findings

Testing black hole information loss requires detecting macroscopic superpositions.

Such experiments could also shed light on decoherence and wavefunction collapse.

The work emphasizes the fundamental experimental challenges involved.

Abstract

We investigate the experimental capabilities required to test whether black holes destroy information. We show that an experiment capable of illuminating the information puzzle must necessarily be able to detect or manipulate macroscopic superpositions (i.e., Everett branches). Hence, it could also address the fundamental question of decoherence versus wavefunction collapse.