Stabilizing dark matter with quantum scale symmetry

TL;DR

This paper explores how quantum scale symmetry in gauge-Yukawa theories can naturally stabilize dark matter candidates by secluding different sectors, with implications for grand unification models and UV completions.

Contribution

It demonstrates that trans-Planckian quantum scale symmetry can prevent certain couplings, leading to secluded sectors and predicting fermionic WIMP dark matter in a grand unification context.

Findings

Emergence of fermionic WIMP dark matter candidates

Coupling strengths predicted by UV completion

Seclusion of different gauge-Yukawa sectors

Abstract

In the context of gauge-Yukawa theories with trans-Planckian asymptotic safety, quantum scale symmetry can prevent the appearance in the Lagrangian of couplings that would otherwise be allowed by the gauge symmetry. Such couplings correspond to irrelevant Gaussian fixed points of the renormalization group flow. Their absence in the theory implies that different sectors of the gauge-Yukawa theory are secluded from one another, in similar fashion to the effects of a global or a discrete symmetry. As an example, we impose the trans-Planckian scale symmetry on a model of Grand Unification based on the gauge group SU(6), showing that it leads to the emergence of several fermionic WIMP dark matter candidates whose coupling strengths are entirely predicted by the UV completion.