Diffusion model of evolution of superthermal high-energy particles under scaling in the early Universe

TL;DR

This paper presents a diffusion model describing the evolution of superthermal high-energy particles in the early Universe using a non-equilibrium framework and Fokker-Planck kinetic equations.

Contribution

It introduces a novel diffusion-based approach to model superthermal particle evolution in the early Universe, extending previous non-equilibrium models.

Findings

Derived a Fokker-Planck type kinetic equation for superthermal particles.

Analyzed the evolution dynamics of high-energy relic particles.

Provided insights into particle distribution changes during early Universe conditions.

Abstract

The evolution of a superthermal relic component of matter is studied on the basis of non-equilibrium model of Universe and the Fokker-Planck type kinetic equation offered by one of the authors.