The E6 route to multicomponent dark matter

TL;DR

This paper proposes a unified E6-based framework that naturally produces multicomponent dark matter, linking symmetry breaking hierarchies to dark sector stability and matter categorization.

Contribution

It introduces a novel E6 embedding model that explains multicomponent dark matter through symmetry breaking and hierarchy arguments, integrating dark and visible sectors.

Findings

Hierarchy of vevs leads to multicomponent dark matter.

Dark matter stability is analyzed within the E6 framework.

Model examples demonstrate gauge coupling unification feasibility.

Abstract

We present a framework of dark- and visible-sector unification in the E6 embedding of the standard model. The demand for consistently getting the standard model leads to the existence of the dark-sector. We show that the hierarchy of vevs typifying unified models leads to multicomponent dark matter at the IR. The symmetry breaking itself categorises the matter content into dark- and visible-sector particles, the categorisation being uniform across different breaking chains. We discuss the stability of the dark matter particles and compare them to existing phenomenological models of dark matter. The central results follow from symmetry and hierarchy arguments. We present an indicative set of models of gauge coupling unification, to show that the framework can be embedded in realistic models of E6.