PIRSA:25010071

Video URL

https://pirsa.org/25010071

Area metrics: Modified gravity from quantum gravity

Borissova, J. (2025). Area metrics: Modified gravity from quantum gravity. Perimeter Institute for Theoretical Physics. https://pirsa.org/25010071

Borissova, Johanna. Area metrics: Modified gravity from quantum gravity. Perimeter Institute for Theoretical Physics, Jan. 06, 2025, https://pirsa.org/25010071 

          @misc{ scivideos_PIRSA:25010071,
            doi = {10.48660/25010071},
            url = {https://pirsa.org/25010071},
            author = {Borissova, Johanna},
            keywords = {Other Physics},
            language = {en},
            title = {Area metrics: Modified gravity from quantum gravity},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2025},
            month = {jan},
            note = {PIRSA:25010071 see, \url{https://scivideos.org/pirsa/25010071}}
          }

Johanna Borissova Perimeter Institute

Talk numberPIRSA:25010071
DOI10.48660/25010071
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

Area metrics define generalized geometric backgrounds to describe spacetime. They are suggested at various places in classical field theory and arise within different approaches to quantum gravity. On these grounds, after introducing the notion of an area metric, I will consider covariant area-metric actions to second order in fluctuations and derivatives. I will then show how these give rise to effective length-metric actions with a distinct nonlocal Weyl-curvature squared term beyond general relativity. Finally, I will point out possible implications and routes for phenomenology.