Abstract

In the context of dS3/CFT2, we propose a timelike entanglement entropy defined by the renormalization group flow. This timelike entanglement entropy is calculated in CFT by using the Callan-Symanzik equation. We find an exact match between this entanglement entropy and the length of a timelike geodesic connecting two different spacelike surfaces in dS3. The counterpart of this entanglement entropy in AdS3 is a spacelike one, also induced by RG flow and extends all the way into the bulk of AdS3. As a result, in both AdS3/CFT2 and dS3/CFT2, there exist exactly three entanglement entropies, providing precisely sufficient information to reconstruct the three-dimensional bulk geometry.

Details

Title
Timelike entanglement entropy in dS3/CFT2
Author
Jiang, Xin 1 ; Wang, Peng 1 ; Wu, Houwen 2 ; Yang, Haitang 1 

 Sichuan University, College of Physics, Chengdu, China (GRID:grid.13291.38) (ISNI:0000 0001 0807 1581) 
 Sichuan University, College of Physics, Chengdu, China (GRID:grid.13291.38) (ISNI:0000 0001 0807 1581); University of Cambridge, DAMTP, Centre for Mathematical Sciences, Cambridge, U.K. (GRID:grid.5335.0) (ISNI:0000 0001 2188 5934) 
Pages
216
Publication year
2023
Publication date
Aug 2023
Publisher
Springer Nature B.V.
e-ISSN
10298479
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2883177404
Copyright
© The Author(s) 2023. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.