Relic Abundance of Asymmetric Dark Matter in Quintessence

TL;DR

This paper analyzes how a quintessence model with a kination phase affects the relic abundance of asymmetric Dark Matter, providing analytic calculations and constraints based on current Dark Matter observations.

Contribution

It extends the standard cosmological calculation of asymmetric Dark Matter relic abundance to a nonstandard quintessence scenario with a kination phase.

Findings

Hubble rate enhancement alters relic density of particles and antiparticles

Constraints on Hubble rate from current Dark Matter abundance

Analytic approach applied to nonstandard cosmology

Abstract

We investigate the relic abundance of asymmetric Dark Matter particles in quintessence model with a kination phase. The analytic calculation of the asymmetric Dark Matter in the standard cosmological scenario is extended to the nonstandard cosmological scenario where we specifically discuss the quintessence model with a kination phase. We found that the enhancement of Hubble rate changes the relic density of particles and anti--particles. We use the present day Dark Matter abundance to constrain the Hubble rate in quintessence model with a kination phase for asymmetric Dark Matter.