Asymptotic safety meets tensor field theory: Toward a new class of gravity-matter systems
Combining asymptotically safe quantum gravity with a tensor field theory, we exhibit the first example of a theory with gravity and scalar fields in four dimensions which may realize asymptotic safety at a nonvanishing value of the scalar quartic coupling. We first present (further) evidence that in...
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| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
29 April 2025
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| In: |
Physical review
Year: 2025, Jahrgang: 111, Heft: 8, Pages: 1-12 |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/PhysRevD.111.085030 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevD.111.085030 Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.111.085030 
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| Verfasserangaben: | Astrid Eichhorn, Razvan Gurau, and Zois Gyftopoulos |
| Zusammenfassung: | Combining asymptotically safe quantum gravity with a tensor field theory, we exhibit the first example of a theory with gravity and scalar fields in four dimensions which may realize asymptotic safety at a nonvanishing value of the scalar quartic coupling. We first present (further) evidence that in the asymptotic-safety paradigm, quantum fluctuations of gravity generically screen the quartic couplings in (multi)scalar models. For a tensor field theory in which the scalar field transforms under an internal 𝑂(𝑁)3 symmetry, this has the effect of replacing asymptotic freedom, recently discovered at large 𝑁 on a fixed flat background, by an interacting fixed point in the presence of quantum gravity. The fixed point originates from the competition between the effects of the matter self-interactions which, contrary to the usual scalar models, are antiscreening, and the screening gravitational effects. |
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| Beschreibung: | Gesehen am 20.10.2025 |
| Beschreibung: | Online Resource |
| ISSN: | 2470-0029 |
| DOI: | 10.1103/PhysRevD.111.085030 |