PIRSA:16030132 Scientific Series Quantum Gravity

DOI10.48660/16030132

Series: 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}}
}

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.

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