Back to Search Start Over

A half de Sitter holography

Authors :
Taishi Kawamoto
Shan-Ming Ruan
Yu-ki Suzuki
Tadashi Takayanagi
Source :
Journal of High Energy Physics, Vol 2023, Iss 10, Pp 1-44 (2023)
Publication Year :
2023
Publisher :
SpringerOpen, 2023.

Abstract

Abstract A long-standing and intriguing question is: does the holographic principle apply to cosmologies like de Sitter spacetime? In this work, we consider a half dS spacetime wherein a timelike boundary encloses the bulk spacetime, presenting a version of de Sitter holography. By analyzing the holographic entanglement entropy in this space and comparing it with that in AdS/CFT, we argue that gravity on a half dS d+1 is dual to a highly non-local field theory residing on dS d boundary. This non-locality induces a breach in the subadditivity of holographic entanglement entropy. Remarkably, this observation can be linked to another argument that time slices in global de Sitter space overestimate the degrees of freedom by redundantly counting the same Hilbert space multiple times.

Details

Language :
English
ISSN :
10298479
Volume :
2023
Issue :
10
Database :
Directory of Open Access Journals
Journal :
Journal of High Energy Physics
Publication Type :
Academic Journal
Accession number :
edsdoj.75f1acffd1204a8f9ff158ec508aa4b3
Document Type :
article
Full Text :
https://doi.org/10.1007/JHEP10(2023)137