Calmet, Xavier, Croon, Djuna and Fritz, Christopher (2015) Non-locality in quantum field theory due to general relativity. The European Physical Journal C, 75 (12). ISSN 1434-6044

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Abstract

We 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.

Item Type:	Article
Schools and Departments:	School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects:	Q Science > QC Physics
Depositing User:	Richard Chambers
Date Deposited:	12 Jan 2016 12:19
Last Modified:	10 Mar 2017 09:18
URI:	http://srodev.sussex.ac.uk/id/eprint/59110

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