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PIRSA:16030132

Video URL

https://pirsa.org/16030132

From locally covariant quantum fields to effective quantum gravity

Rejzner, K. (2016). From locally covariant quantum fields to effective quantum gravity. Perimeter Institute for Theoretical Physics. https://pirsa.org/16030132

Katarzyna Rejzner University of York

Talk numberPIRSA:16030132
DOI10.48660/16030132
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

I will present recent result on constructing effective quantum gravity theory as a locally covariant QFT. The approach I advocate uses the BV formalism for dealing with the gauge freedom and Epstein-Glaser renormalization to control the UV divergences. I will show how gauge invariant observables that satisfy a weak notion of locality can be constructed in this framework and I will sketch the argument for perturbative background independence. Recently these ideas were applied to models relevant in cosmology.