PIRSA:26050053

Video URL

https://pirsa.org/26050053

Entanglement Entropy in Spacetime and a Possible Signature of Discreteness

Jones, J. (2026). Entanglement Entropy in Spacetime and a Possible Signature of Discreteness. Perimeter Institute for Theoretical Physics. https://pirsa.org/26050053

Jones, Joshua. Entanglement Entropy in Spacetime and a Possible Signature of Discreteness. Perimeter Institute for Theoretical Physics, May. 04, 2026, https://pirsa.org/26050053 

          @misc{ scivideos_PIRSA:26050053,
            doi = {10.48660/26050053},
            url = {https://pirsa.org/26050053},
            author = {Jones, Joshua},
            keywords = {Other Physics},
            language = {en},
            title = {Entanglement Entropy in Spacetime and a Possible Signature of Discreteness},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2026},
            month = {may},
            note = {PIRSA:26050053 see, \url{https://scivideos.org/pirsa/26050053}}
          }

Joshua Jones Dublin Institute For Advanced Studies

Talk numberPIRSA:26050053
DOI10.48660/26050053
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

The regularisation of entanglement entropy is integral to the possibility of it sourcing the Bekenstein-Hawking entropy. This regularisation ought to come from quantum gravity, which if covariant, can induce a regularisation scheme inapplicable directly on hypersurfaces, but instead suited to application over spacetime volumes. As such, the calculation of entanglement entropy should be similarly situated over spacetime volumes. I will explain how this can be done via a spectral equation using spacetime correlators, and briefly show an example calculation in causal set theory, a discrete theory of quantum gravity. There, a modified entanglement entropy scaling was obtained, due to the discreteness.