Quintessential Cosmological Scenarios in the Relativistic Theory of Gravitation

TL;DR

This paper demonstrates that the relativistic theory of gravitation can explain the universe's accelerated expansion through a quintessential term, providing estimates for graviton mass and maximum scaling factor consistent with observations.

Contribution

It introduces a method to achieve accelerated expansion in relativistic gravitation theory using quintessence, and estimates key parameters like graviton mass and scaling factor.

Findings

Accelerated expansion can be modeled with a quintessential term in relativistic gravitation.

Maximum graviton mass can be very low, especially with primordial inflation.

Maximum scaling factor can be extremely large in scalar field models of quintessence.

Abstract

It is shown that the accelerated expansion of the universe in the framework of the relativistic theory of gravitation can be achieved by the introduction of the quintessential term in the energy-momentum tensor. The value of the minimum scaling factor and the modern observational data for the density and state parameters of the matter give the rough estimations for the maximum graviton mass and the maximum scaling factor. The former can be very low in the case of the primordial inflation and the latter can be extremely large for the scalar field model of the quintessence. In any case, the massive graviton stops the second inflation and provide the closed cosmological scenario in the agreement with the causality principle inherent to the theory.