A Parodox and its Resolution Illustrate Principles of de Sitter Holography

Document Type : Regular article

Author

Stanford Institute for Theoretical Physics and Department of Physics

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.

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Articles in Press, Accepted Manuscript
Available Online from 04 March 2025
  • Receive Date: 09 February 2025
  • Revise Date: 04 March 2025
  • Accept Date: 23 February 2025