@article{6fe86064f1074db2a7e1cb06d2c4304e,
title = "Light charged fermions in quantum gravity",
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.",
author = "{de Brito}, {Gustavo P.} and Astrid Eichhorn and Marc Schiffer",
note = "Funding Information: This work is supported by a research grant ( 29405 ) from Villum Fonden . Additionally, M. S. acknowledges support by the German Academic Scholarship Foundation and gratefully acknowledges hospitality at CP3-Origins, University of Southern Denmark, during final stages of this project. GPB is grateful for the support by CAPES under the grant no. 88881.188349 /2018-01 and CNPq no. 142049 /2016-6 and thanks the ITP at Heidelberg University for hospitality when this project was initiated. We gratefully acknowledge funding from the Heraeus-Stiftung for a research group retreat during which this project was developed. Publisher Copyright: {\textcopyright} 2021 The Authors Copyright: Copyright 2021 Elsevier B.V., All rights reserved.",
year = "2021",
month = apr,
day = "10",
doi = "10.1016/j.physletb.2021.136128",
language = "English",
volume = "815",
journal = "Physics Letters B",
issn = "0370-2693",
publisher = "Elsevier",
}