Pith. sign in

REVIEW 4 cited by

A Paradox and its Resolution Illustrate Principles of de Sitter Holography

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 2304.00589 v1 pith:VGEETHZJ submitted 2023-04-02 hep-th

Leonard Susskind This is my paper · ORCID
classification hep-th
keywords sittercorrelationfunctionsholographicrealresolutionsemiclassicalspace
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
read the original abstract

Semiclassical gravity and the holographic description of the static patch of de Sitter space appear to disagree about properties of correlation functions. Certain holographic correlation functions are necessarily real whereas their semiclassical counterparts have both real and imaginary parts. The resolution of this apparent contradiction involves the fact that time-reversal is a gauge symmetry in de Sitter space -- a point made by Harlow and Ooguri -- and the need for an observer (or quantum reference frame) as advocated by Chandrasekaran, Longo, Penington, and Witten.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Chaos and the Emergence of the Cosmological Horizon

    hep-th 2024-11 conditional novelty 7.0 of 10

    Finite-mass observers in dS2 have non-commuting type I algebras, and their OTOC shows a Lyapunov exponent 4π/β_dS, twice the de Sitter bound.

  2. On the relation between perspective-neutral, algebraic, and effective quantum reference frames

    quant-ph 2025-07 conditional novelty 6.0 of 10

    For ideal quantum reference frames with a single constraint, the perspective-neutral, algebraic, and effective semiclassical approaches describe the same physics and the same frame-switching rules.

  3. Crossed products and quantum reference frames: on the observer-dependence of gravitational entropy

    hep-th 2024-12 accept novelty 6.0 of 10

    Gravitational subregion entropy is observer-dependent: different quantum clocks produce different von Neumann algebras and different entropy functionals for the same global state.

  4. CRT gauge symmetry in two-sheet de Sitter universes

    gr-qc 2024-11 reject novelty 4.0 of 10

    In this construction, CRT symmetry is a gauge symmetry in two-sheet de Sitter universes, and the presence of an observer is the gauge-fixing.

Pith tools