Consistency of matter models with asymptotically safe quantum gravity
We discuss the compatibility of quantum gravity with dynamical matter degrees of freedom. Specifically, we present bounds we obtained in Donà et al. (Phys. Rev. D, 89, 084035 (2014) doi:10.1103/PhysRevD.89.084035) on the allowed number and type of matter fields within asymptotically safe quantum gr...
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| Main Authors: | , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
18 February 2015
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| In: |
Canadian journal of physics
Year: 2015, Volume: 93, Issue: 9, Pages: 988-994 |
| ISSN: | 1208-6045 |
| DOI: | 10.1139/cjp-2014-0574 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1139/cjp-2014-0574 Verlag, Volltext: https://www.nrcresearchpress.com/doi/10.1139/cjp-2014-0574 
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| Author Notes: | Pietro Donà, Astrid Eichhorn, and Roberto Percacci |
| Summary: | We discuss the compatibility of quantum gravity with dynamical matter degrees of freedom. Specifically, we present bounds we obtained in Donà et al. (Phys. Rev. D, 89, 084035 (2014) doi:10.1103/PhysRevD.89.084035) on the allowed number and type of matter fields within asymptotically safe quantum gravity. As a novel result, we show bounds on the allowed number of spin-3/2 (Rarita-Schwinger) fields (e.g., the gravitino). These bounds, obtained within truncated renormalization group flows, indicate the compatibility of asymptotic safety with the matter fields of the standard model. Further, they suggest that extensions of the matter content of the standard model are severely restricted in asymptotic safety. This means that searches for new particles at colliders could provide experimental tests for this particular approach to quantum gravity. |
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| Item Description: | Gesehen am 24.11.2017 |
| Physical Description: | Online Resource |
| ISSN: | 1208-6045 |
| DOI: | 10.1139/cjp-2014-0574 |