Entropy in dS/CFT correspondence and its application

Date

2023/06/13(Tue)11:00~12:00

Venue

Hybrid (On-site: Kenkyu-Honkan Seminar room, Online: Zoom)

Speaker

Yusuke Taki (Kyoto University)

Language

English

URL

Contact

Yuko Urakawa / yukour-AT-post.kek.jp


Overview

In this talk, we focus on dS/CFT correspondence, which is a proposal for de Sitter (dS) holography analogous to AdS/CFT. This talk contains two recent works. First we consider an application of dS/CFT to evaluation of the semi-classical limit of wave function of universe. Through the procedure of analytic continuation in the CFT side corresponding to that from AdS to dS, we can find an interesting structure that only “allowable” geometries appear as saddle points of the gravitational path integral. Second, we discuss an extension of the holographic entanglement entropy formula in AdS/CFT toward dS/CFT. We propose that the holographic formula is formulated for a generalized notion of entanglement entropy, called pseudo entropy.

Release date 2023/05/31 Updated 2024/06/20