Common Origin of Visible and Dark Universe

TL;DR

This paper proposes a unified model explaining the origins of dark matter, dark energy, and baryonic matter through a variant of the seesaw mechanism, linking their properties to neutrino physics.

Contribution

It introduces a novel framework connecting dark matter, dark energy, and baryogenesis via a unified seesaw-based model involving leptogenesis and pseudo-Nambu-Goldstone bosons.

Findings

Dark matter relic density arises from asymmetry linked to leptogenesis.

Dark energy is attributed to a pseudo-Nambu-Goldstone boson related to neutrino masses.

The model provides a common origin for visible and dark universe components.

Abstract

Dark matter, baryonic matter and dark energy have different properties but contribute comparable energy density to the present Universe. We point out that they may have a common origin. As the dark energy has a scale far lower than all known scales in particle physics but very close to neutrino masses, while the excess matter over antimatter in the baryonic sector is probably related to the neutrino mass-generation, we unify the origin of dark and visible Universe in a variant of seesaw model. In our model (i) the dark matter relic density is a dark matter asymmetry emerged simultaneously with the baryon asymmetry from leptogenesis; (ii) the dark energy is due to a pseudo-Nambu-Goldstone-Boson associated with the neutrino mass-generation.