10-1140-epjc-s10052-015-3838-2.pdf (427.63 kB)
Non-locality in quantum field theory due to general relativity
journal contribution
posted on 2023-06-08, 23:57 authored by Xavier CalmetXavier Calmet, Djuna Croon, Christopher FritzWe 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.
Funding
Particle Physics Theory at Royal Holloway and Sussex; G0742; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/J000477/1
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Publication status
- Published
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- Published version
Journal
The European Physical Journal CISSN
1434-6044Publisher
SpringerExternal DOI
Issue
12Volume
75Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2016-01-12First Open Access (FOA) Date
2016-01-12First Compliant Deposit (FCD) Date
2016-01-12Usage metrics
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