Quantum-gravity-induced matter self-interactions in the asymptotic-safety scenario
We investigate the high-energy properties of matter theories coupled to quantum gravity. Specifically, we show that quantum gravity fluctuations generically induce matter self-interactions in a scalar theory. Our calculations apply within asymptotically safe quantum gravity, where our results indica...
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| Main Author: | |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
15 November 2012
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| In: |
Physical review. D, Particles, fields, gravitation, and cosmology
Year: 2012, Volume: 86, Issue: 10 |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.86.105021 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevD.86.105021 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.86.105021 
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| Author Notes: | Astrid Eichhorn |
MARC
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| 520 | |a We investigate the high-energy properties of matter theories coupled to quantum gravity. Specifically, we show that quantum gravity fluctuations generically induce matter self-interactions in a scalar theory. Our calculations apply within asymptotically safe quantum gravity, where our results indicate that the UV is dominated by an interacting fixed point, with nonvanishing gravitational as well as matter couplings. In particular, momentum-dependent scalar self-interactions are nonzero and induce a nonvanishing momentum-independent scalar potential. Furthermore, we point out that terms of this type can have observable consequences in the context of scalar-field driven inflation, where they can induce potentially observable non-Gaussianities in the cosmic microwave background. | ||
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