Asymptotically free scalar curvature-ghost coupling in quantum Einstein gravity
We consider the asymptotic-safety scenario for quantum gravity which constructs a nonperturbatively renormalizable quantum gravity theory with the help of the functional renormalization group (RG). We verify the existence of a non-Gaussian fixed point and include a running curvature-ghost coupling a...
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| Main Authors: | , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
5 November 2009
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| In: |
Physical review. D, Particles, fields, gravitation, and cosmology
Year: 2009, Volume: 80, Issue: 10 |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.80.104003 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevD.80.104003 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.80.104003 
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| Author Notes: | Astrid Eichhorn, Holger Gies, and Michael M. Scherer |
| Summary: | We consider the asymptotic-safety scenario for quantum gravity which constructs a nonperturbatively renormalizable quantum gravity theory with the help of the functional renormalization group (RG). We verify the existence of a non-Gaussian fixed point and include a running curvature-ghost coupling as a first step towards the flow of the ghost sector of the theory. We find that the scalar curvature-ghost coupling is asymptotically free and RG relevant in the ultraviolet. Most importantly, the property of asymptotic safety discovered so far within the Einstein-Hilbert truncation and beyond remains stable under the inclusion of the ghost flow. |
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| Item Description: | Gesehen am 25.02.2020 |
| Physical Description: | Online Resource |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.80.104003 |