Cosmological Evolution of Statistical System of Scalar Charged Particles

TL;DR

This paper develops a macroscopic model of scalar charged particle plasma in cosmology, revealing unique acceleration bursts and heating effects that could influence gravitational perturbation theories.

Contribution

It introduces a self-consistent cosmological model of scalar charged particles based on kinetic equations and numerical simulations, highlighting novel evolution features.

Findings

Giant bursts of cosmological acceleration occur at specific times.

Strong heating of the system is observed during these bursts.

Results are weakly dependent on the statistical model choice.

Abstract

In the paper we consider the macroscopic model of plasma of scalar charged particles, obtained by means of the statistical averaging of the microscopic equations of particle dynamics in a scalar field. On the basis of kinetic equations, obtained from averaging, and their strict integral consequences, a self-consistent set of equations is formulated which describes the self-gravitating plasma of scalar charged particles. It was obtained the corresponding closed cosmological model which also was numerically simulated for the case of one-component degenerated Fermi gas and two-component Boltzmann system. It was shown that results depend weakly on the choice of a statistical model. Two specific features of cosmological evolution of a statistical system of scalar charged particles were obtained with respect to cosmological evolution of the minimal interaction models: appearance of giant bursts of invariant cosmological acceleration $\Omega$ at the time interval $8\cdot10^3\div2\cdot10^4 t_{Pl}$ and strong heating ($3\div 8$ orders of magnitude) of a statistical system at the same times. The presence of such features can modify the quantum theory of generation of cosmological gravitational perturbations.