Predictive power of grand unification from quantum gravity
High Energy Physics - Theory
2020-09-04 v2 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
If a grand-unified extension of the asymptotically safe Reuter fixed-point for quantum gravity exists, it determines free parameters of the grand-unified scalar potential. All quartic couplings take their fixed-point values in the trans-Planckian regime. They are irrelevant parameters that are, in principle, computable for a given particle content of the grand unified model. In turn, the direction of spontaneous breaking of the grand-unified gauge symmetry becomes predictable. For the flow of the couplings below the Planck mass, gauge and Yukawa interactions compete for the determination of the minimum of the effective potential.
Cite
@article{arxiv.1909.07318,
title = {Predictive power of grand unification from quantum gravity},
author = {Astrid Eichhorn and Aaron Held and Christof Wetterich},
journal= {arXiv preprint arXiv:1909.07318},
year = {2020}
}
Comments
1 additional figure and comments added; identical with version published in JHEP