# Gravitational production of superheavy baryonic and dark matter in quintessential inflation: nonconformally coupled case

## TL;DR

This paper investigates the gravitational creation of superheavy baryonic and dark matter during quintessential inflation, highlighting the importance of coupling differences and establishing a mass threshold for dark matter viability.

## Contribution

It introduces a model where baryonic matter and dark matter have different gravitational couplings during inflation, providing new insights into superheavy dark matter production.

## Key findings

- Superheavy dark matter mass must exceed 8 x 10^{15} GeV for viability.
- Nonconformal coupling of baryonic matter influences reheating processes.
- Dark matter conformally coupled with gravity affects production mechanisms.

## Abstract

The gravitational production of superheavy dark matter is studied in the context of quintessential inflation. The superheavy particles, whose decay products are baryonic matter and are the responsible for the reheating of the universe after the end of the inflationary period, are not conformally coupled with gravity. On the contrary, dark matter is assumed to be conformally coupled with gravity. We show that the viability of these scenarios requires the mass of the superheavy dark matter to be greater than 8 x 10^{15} GeV.