English

Viability of quantum-gravity induced ultraviolet completions for matter

General Relativity and Quantum Cosmology 2017-12-01 v2 High Energy Physics - Phenomenology High Energy Physics - Theory

Abstract

We highlight how the existence of an ultraviolet completion for interacting Standard-Model type matter puts constraints on the viable microscopic dynamics of asymptotically safe quantum gravity within truncated Renormalization Group flows. A first constraint -- the weak-gravity bound -- is rooted in the destruction of quantum scale-invariance in the matter system by strong quantum-gravity fluctuations. A second constraint arises by linking Planck-scale dynamics to the dynamics at the electroweak scale. Specifically, we delineate how to extract a prediction of the top quark mass from asymptotically safe gravity and stress that a finite top mass could be difficult to accommodate in a significant part of the gravitational coupling space.

Keywords

Cite

@article{arxiv.1705.02342,
  title  = {Viability of quantum-gravity induced ultraviolet completions for matter},
  author = {Astrid Eichhorn and Aaron Held},
  journal= {arXiv preprint arXiv:1705.02342},
  year   = {2017}
}

Comments

version identical with published one; small changes (slight numerical changes in Tab. 1, modified plot range in Fig. 18, some sentences added/changed), conclusions remain unchanged