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arXiv · 1505.04517

Non-locality in Quantum Field Theory due to General Relativity

Xavier Calmet·Djuna Croon·Christopher Fritz
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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.

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Xavier Calmet, Djuna Croon, Christopher Fritz. 2015-08-12. Non-locality in Quantum Field Theory due to General Relativity. https://doi.org/10.1140/epjc%2Fs10052-015-3838-2

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