# Dark matter and baryon-number generation in quintessential inflation via hierarchical right-handed neutrinos

## TL;DR

This paper presents a comprehensive model integrating three generations of hierarchical right-handed neutrinos within quintessential inflation, explaining inflation, dark energy, dark matter, and baryogenesis, and offering testable predictions.

## Contribution

It introduces a unified framework linking neutrino hierarchies to cosmological phenomena within quintessential inflation, a novel approach to addressing multiple cosmic puzzles.

## Key findings

- Neutrino masses are hierarchically set at 10^{13} GeV, 10^{11} GeV, and 10 keV.
- The model naturally accounts for reheating, leptogenesis, and dark matter.
- Predictions are testable with upcoming observational data.

## Abstract

Incorporating three generations of right-handed Majorana neutrinos to quintessential inflation, we construct a model which simultaneously explains inflation, dark energy, dark matter and baryogenesis. These neutrinos have hierarchical masses $M_3 \sim 10^{13}$GeV, $M_2 \sim 10^{11}$GeV, $M_1 \sim 10$keV and are produced by gravitational particle production in the kination regime after inflation. The heaviest, the intermediate, and the lightest account for reheating, CP violation of leptogenesis, and dark matter, respectively. This model can be tested in various ways with forthcoming observations.