The Kinetics Of Nonequilibrium Universe. I. The Condition Of Local Thermodynamical Equilibrium

TL;DR

This paper analyzes the conditions under which local thermodynamical equilibrium can exist in the early universe, showing that at very high energies, this equilibrium is initially broken due to particle interaction cross-sections.

Contribution

It provides a quantum and relativistic kinetic theory analysis of the initial thermodynamical state of the universe, highlighting the impact of particle interaction cross-sections at high energies.

Findings

Local thermodynamical equilibrium depends on particle interaction cross-sections.

At superhigh energies, the equilibrium condition is initially broken.

Scaling recovery at high energies affects equilibrium conditions.

Abstract

In terms of fundamental principles of quantum theory of interacting particles and relativistic kinetic theory there was carried out an analysis of the main principle of standard cosmological scenario - the initial existence of local thermodynamical equilibrium. It has been shown, that condition of the existence of local thermodynamical equilibrium in Universe is determined essentially by means of function of total cross-section of particles' interaction from the kinematic invariant and in case of scaling's recovery in range of superhigh energies it is initially broken.