Light charged fermions in quantum gravity

• Verfasst von: Brito, Gustavo Pazzini de [VerfasserIn]
• Verfasst von: Eichhorn, Astrid [VerfasserIn]
• Verfasst von: Schiffer, Marc [VerfasserIn]
• Titel: Light charged fermions in quantum gravity
• Verf.angabe: Gustavo P. de Brito, Astrid Eichhorn, Marc Schiffer
• E-Jahr: 2021
• Jahr: 6 February 2021
• Umfang: 9 S.
• Fussnoten: Gesehen am 12.05.2021
• Titel Quelle: Enthalten in: Physics letters / B
• Ort Quelle: Amsterdam : North-Holland Publ., 1967
• Jahr Quelle: 2021
• Band/Heft Quelle: 815(2021), Artikel-ID 136128, Seite 1-9
• ISSN Quelle: 1873-2445
• DOI: doi:10.1016/j.physletb.2021.136128
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1757733205

Abstract

We study the impact of quantum gravity on a system of chiral fermions that are charged under an Abelian gauge group. Under the impact of quantum gravity, a finite value of the gauge coupling could be generated and in turn drive four-fermion interactions to criticality. We find indications that the gravity-gauge-fermion interplay protects the lightness of fermions for a large enough number of fermions. On the other hand, for a smaller number of fermions, chiral symmetry may be broken, which would be in tension with the observation of light fermions.