On the nature of entangling photons in horizon-induced decoherence

Fuente: arXiv
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Autores principales: Fahn, Max Joseph, Pesci, Alessandro
Formato: Preprint
Publicado: 2026
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author Fahn, Max Joseph
Pesci, Alessandro
author_facet Fahn, Max Joseph
Pesci, Alessandro
contents Recently, it was discussed how the presence of a Killing horizon induces decoherence on a quantum system in a superposition of states. Focusing on the case of an electrically-charged system with superposed positions, this would happen due to ``entangling'' photons crossing the horizon while carrying information on the superposition. Purpose of this essay is to investigate this process in connection with black hole thermodynamics and the ensuing entropy bounds. We show that an apparent tension arising with the latter is resolved provided the entangling photons, expressing a modification of the field at, as well as inside the horizon, do not give rise to a flux across it. The storage of information in this field, not retrievable from an outside observer, causes the superposition to decohere.
format Preprint
id arxiv_https___arxiv_org_abs_2605_19588
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle On the nature of entangling photons in horizon-induced decoherence
Fahn, Max Joseph
Pesci, Alessandro
General Relativity and Quantum Cosmology
Quantum Physics
Recently, it was discussed how the presence of a Killing horizon induces decoherence on a quantum system in a superposition of states. Focusing on the case of an electrically-charged system with superposed positions, this would happen due to ``entangling'' photons crossing the horizon while carrying information on the superposition. Purpose of this essay is to investigate this process in connection with black hole thermodynamics and the ensuing entropy bounds. We show that an apparent tension arising with the latter is resolved provided the entangling photons, expressing a modification of the field at, as well as inside the horizon, do not give rise to a flux across it. The storage of information in this field, not retrievable from an outside observer, causes the superposition to decohere.
title On the nature of entangling photons in horizon-induced decoherence
topic General Relativity and Quantum Cosmology
Quantum Physics
url https://arxiv.org/abs/2605.19588