Dark Matter and Dark Energy in Three-Higgs Doublet Model

TL;DR

This paper introduces a Three-Higgs Doublet Model integrating dark matter and dark energy as scalar fields, demonstrating compatibility with observational data and analyzing its stability through RGEs.

Contribution

It presents a novel framework combining dark matter and dark energy within a Three-Higgs Doublet Model, including relic density calculations and stability analysis.

Findings

Dark matter relic density matches observational bounds.

Model remains stable over a large energy range.

Dark energy can be mimicked within the same framework.

Abstract

This article discusses the incorporation of dark matter and dark energy into a new physics model called the Three-Higgs Doublet Model. Dark matter and dark energy are accommodated as CP-even and $Z_2$-odd scalars in their respective inert doublets. By leveraging a $Z_2$ symmetry to suppress certain interactions, we model the behavior of dark matter. Similarly, by imposing a shift symmetry, dark energy can be mimicked within the same framework for the current cosmic epoch. The dark matter relic density is calculated for our model using \texttt{micrOMEGAs}. It is shown that despite the inclusion of dark energy, dark matter relic density can be brought within observational bounds and match existing literature. Furthermore, the one-loop and two-loop Renormalization Group Equations (RGEs) were computed using \texttt{SARAH} to ensure radiative stability over a large range of energies. This study lays the groundwork for a future study of dark matter-dark energy interactions in the early universe and the exploration of different early universe dynamics.