4–9 Dec 2015
International Conference Centre Geneva
Europe/Zurich timezone
THE REGISTRATION IS OPEN

Non-locality in General Relativity and Quantum Field Theory

7 Dec 2015, 14:21
21m
Level 2, Room 14 (International Conference Centre Geneva)

Level 2, Room 14

International Conference Centre Geneva

17 Rue de Varembé, 1211 Geneva

Speaker

Xavier Calmet (University of Sussex)

Description

I show that General Relativity coupled to a quantum field theory generically leads to non-local effects in the matter sector. These non-local effects can be described by non-local higher dimensional operators which remarkably have an approximate shift symmetry. When applied to inflationary models, our results imply that small non-Gaussianities are a generic feature of models based on General Relativity coupled to matter fields. However, these effects are too small to be observable in the Cosmic Microwave Background.

Primary author

Xavier Calmet (University of Sussex)

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