PIRSA:16030132

From locally covariant quantum fields to effective quantum gravity

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

Rejzner, Katarzyna. From locally covariant quantum fields to effective quantum gravity. Perimeter Institute, Mar. 16, 2016, https://pirsa.org/16030132 

          @misc{ pirsa_PIRSA:16030132,
            doi = {10.48660/16030132},
            url = {https://pirsa.org/16030132},
            author = {Rejzner, Katarzyna},
            keywords = {Quantum Gravity},
            language = {en},
            title = {From locally covariant quantum fields to effective quantum gravity},
            publisher = {Perimeter Institute},
            year = {2016},
            month = {mar},
            note = {PIRSA:16030132 see, \url{https://pirsa.org}}
          }

Katarzyna Rejzner

University of York

Talk number
PIRSA:16030132
Collection
Talk Type
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.