Constraining Inflationary Dark Matter in the Luminogenesis Model

TL;DR

This paper links inflationary cosmology with dark matter properties in the luminogenesis model, showing how inflaton decay influences dark matter mass and abundance, potentially solving galaxy structure issues.

Contribution

It introduces a novel connection between inflation dynamics and dark matter mass in the luminogenesis model, integrating cosmological constraints with particle physics.

Findings

Inflaton decay produces dark matter consistent with cosmological data.

Dark matter in the model exhibits self-interactions addressing galaxy core problems.

The model unifies inflation, dark matter, and luminous matter within a single gauge framework.

Abstract

Using renormalization-group flow and cosmological constraints on inflation models, we exploit a unique connection between cosmological inflation and the dynamical mass of dark-matter particles in the luminogenesis model, a unification model with the gauge group $SU(3)_C \times SU(6) \times U(1)_Y$, which breaks to the Standard Model with an extra gauge group for dark matter when the inflaton rolls into the true vacuum. In this model, inflaton decay gives rise to dark matter, which in turn decays to luminous matter in the right proportion that agrees with cosmological data. Some attractive features of this model include self-interacting dark matter, which may resolve the problems of dwarf-galaxy structures and dark-matter cusps at the centers of galaxies.