Cosmic repulsion in presence of matter

TL;DR

This paper proposes a modified cosmological model where matter induces curvature and repulsive interactions, leading to a non-singular universe with accelerated expansion and well-behaved parameters, addressing initial singularity issues.

Contribution

It introduces a new energy-momentum tensor incorporating temperature, entropy, and a scalar field, resulting in a non-singular, accelerating universe model.

Findings

Eliminates initial singularity in cosmological models

Predicts a universe temperature of 10^32 Kelvin at inception

Results in a universe with no flatness problem

Abstract

A basic problem that confronts the standard cosmological models is the problem of initial singularity characterised by infinite material density, infinite temperature and infinite spacetime curvature. The inevitable existence of such a phase of the universe may be considered to be one of the major drawbacks of Einstein's field equations. To some extent inflation models ameliorate this. In the present work we postulate that whenever matter (radiation) arises in flat spacetime, it introduces curvature and causes a repulsive interaction to develop. A modified energy momentum tensor is introduced towards this end, which invokes the temperature, entropy and a cosmic scalar field. This redefinition of the energy momentum distribution when applied to the early universe dynamics has the effect of producing a non-singular initial behaviour. the repulsive interaction introduces some features of an accelarating universe. In this model all cosmological parameters are mathematically well behaved. There is no flatness problem. Temperature at the beginning of this universe is 10^32 kelvin.