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A Toy Model of the Information Paradox in Empty Space

by Suvrat Raju

Submission summary

As Contributors: Suvrat Raju
Preprint link: scipost_201904_00001v1
Date accepted: 2019-06-04
Date submitted: 2019-04-25
Submitted by: Raju, Suvrat
Submitted to: SciPost Physics
Discipline: Physics
Subject area: High-Energy Physics - Theory
Approach: Theoretical


A sharp version of the information paradox involves a seeming violation of the monogamy of entanglement during black hole evaporation. We construct an analogous paradox in empty anti-de Sitter space. In a local quantum field theory, Bell correlations between operators localized in mutually spacelike regions are monogamous. We show, through a controlled calculation, that this property can be violated by an order-1 factor in a theory of gravity. This example demonstrates that what appears to be a violation of the monogamy of entanglement may just be a subtle violation of locality in quantum gravity.

Ontology / Topics

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Anti-de Sitter (AdS) space Black holes Entanglement Gravity Quantum field theory (QFT)

Published as SciPost Phys. 6, 073 (2019)

Reports on this Submission

Anonymous Report 1 on 2019-5-16 Invited Report

  • Cite as: Anonymous, Report on arXiv:scipost_201904_00001v1, delivered 2019-05-16, doi: 10.21468/SciPost.Report.957


I thank the author for their detailed response. The changes implemented address all of my comments and requested changes satisfactorily.

While I still have reservations about the usefulness of this (interesting) argument as a toy model for the information paradox, in the revised manuscript I am satisfied that the assumptions and key steps of the argument are stated much more clearly, enabling readers to draw their own conclusions.

I therefore recommend that this submission should be published in SciPost Physics.

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