PIRSA:21040035

Entanglement entropy in expanding spacetimes

van der Schee, W. (2021). Entanglement entropy in expanding spacetimes. Perimeter Institute. https://pirsa.org/21040035

van der Schee, Wilke. Entanglement entropy in expanding spacetimes. Perimeter Institute, Apr. 27, 2021, https://pirsa.org/21040035 

          @misc{ pirsa_PIRSA:21040035,
            doi = {10.48660/21040035},
            url = {https://pirsa.org/21040035},
            author = {van der Schee, Wilke},
            keywords = {Quantum Fields and Strings},
            language = {en},
            title = {Entanglement entropy in expanding spacetimes},
            publisher = {Perimeter Institute},
            year = {2021},
            month = {apr},
            note = {PIRSA:21040035 see, \url{https://pirsa.org}}
          }

Wilke van der Schee

European Organization for Nuclear Research (CERN)

Talk number
PIRSA:21040035
Collection
Talk Type
Subject
Abstract

This talk will be about entanglement entropy in empty 4-dimensional de Sitter spacetime of a non-conformal QFT [1]. I will first briefly describe the set-up and show how a hydrodynamic plasma dilutes and falls out of equilibrium due to expansion towards empty de Sitter spacetime. Interestingly, in the empty setting we can show that extremal surfaces in the holographic dual of spherical entangling regions on the boundary QFT probe beyond the dual event horizon if and only if the entangling region is larger than the cosmological horizon.

[1] Jorge Casalderrey-Solana, Christian Ecker, David Mateos and WS, Strong-coupling dynamics and entanglement in de Sitter space, 2011.08194