Non-perturbative propagators in quantum gravity
We employ non-perturbative renormalisation group methods to compute the full momentum dependence of propagators in quantum gravity in general dimensions. We disentangle all different graviton and Faddeev-Popov ghost modes and find qualitative differences in the momentum dependence of their propagato...
Gespeichert in:
| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
29 June 2021
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| In: |
Universe
Year: 2021, Jahrgang: 7, Heft: 7, Pages: 1-36 |
| ISSN: | 2218-1997 |
| DOI: | 10.3390/universe7070216 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.3390/universe7070216 Verlag, lizenzpflichtig, Volltext: https://www.mdpi.com/2218-1997/7/7/216 
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| Verfasserangaben: | Benjamin Knorr and Marc Schiffer |
MARC
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| 520 | |a We employ non-perturbative renormalisation group methods to compute the full momentum dependence of propagators in quantum gravity in general dimensions. We disentangle all different graviton and Faddeev-Popov ghost modes and find qualitative differences in the momentum dependence of their propagators. This allows us to reconstruct the form factors that are quadratic in curvature from first principles, which enter physical observables like scattering cross sections. The results are qualitatively stable under variations of the gauge fixing choice. | ||
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