Thermodynamics of Expansive Nondecelerative Universe

TL;DR

This paper explores the thermodynamic properties of the Expansive Nondecelerative Universe model, showing how cosmic background radiation energy and temperature relate to the universe's expansion, aligning with observations and indicating non-decelerating expansion.

Contribution

It provides a thermodynamic analysis of the ENU model, deriving relationships between radiation energy, temperature, and the gauge factor, consistent with observations and suggesting a non-decelerating universe.

Findings

Radiation energy and temperature scale as a^(-3/4).

Energy density scales as a^(-3).

Universe expansion is not decelerated by gravity.

Abstract

The present contribution deals with thermodynamic aspects of the model of Expansive Nondecelerative Universe. In this model, in the matter era a dependence T^CBR ~ E^CBR ~ a(exp -3/4) holds for the energy of cosmic background radiation, E^CBR and its temperature T^CBR, while the proportionality of the energy density epsilon^CBR to the gauge factor a can be expressed as epsilon^CBR ~ a(exp -3). The given relationships comply with experimental observations of the cosmic background radiation as well as with a surprising finding that the Universe expansion is not decelerated by gravitational forces. It is rationalized that the specific entropy is proportional to a(exp -1/4), i.e. it is gradually decreasing in time.