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Title: Toward a holographic theory for general spacetimes

Journal Article · · Physical Review D
 [1];  [1];  [1];  [2]
  1. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Univ. of California, Santa Barbara, CA (United States)

We study a holographic theory of general spacetimes that does not rely on the existence of asymptotic regions. This theory is to be formulated in a holographic space. When a semiclassical description is applicable, the holographic space is assumed to be a holographic screen: a codimension-1 surface that is capable of encoding states of the gravitational spacetime. Our analysis is guided by conjectured relationships between gravitational spacetime and quantum entanglement in the holographic description. To understand basic features of this picture, we catalog predictions for the holographic entanglement structure of cosmological spacetimes. We find that qualitative features of holographic entanglement entropies for such spacetimes differ from those in AdS/CFT but that the former reduce to the latter in the appropriate limit. The Hilbert space of the theory is analyzed, and two plausible structures are found: a direct sum and "spacetime equals entanglement" structure. The former preserves a naive relationship between linear operators and observable quantities, while the latter respects a more direct connection between holographic entanglement and spacetime. We also discuss the issue of selecting a state in quantum gravity, in particular how the state of the multiverse may be selected in the landscape.

Research Organization:
Univ. of California, Santa Barbara, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
SC0011702; AC02-05CH11231
OSTI ID:
1601985
Alternate ID(s):
OSTI ID: 1349704
Journal Information:
Physical Review D, Vol. 95, Issue 8; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 35 works
Citation information provided by
Web of Science

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Cited By (5)

Towards bulk metric reconstruction from extremal area variations journal August 2019
Comments on holographic entanglement entropy in T T deformed conformal field theories journal July 2019
Does gravity come from quantum information? journal October 2018
Bulk Entanglement Gravity without a Boundary: Towards Finding Einstein's Equation in Hilbert Space text January 2017
Towards Bulk Metric Reconstruction from Extremal Area Variations text January 2019

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