Cosmic evolution with a general Gaussian type scale factor

TL;DR

This paper proposes a simple Gaussian scale factor model for cosmic evolution in Einstein gravity, describing a universe that is eternal, inhomogeneous, anisotropic, and free of singularities, beginning or end.

Contribution

It introduces a novel Gaussian scale factor model for an eternal universe within Einstein gravity, emphasizing inhomogeneity and anisotropy.

Findings

Existence of a continuously evolving, eternal universe.

No singularities, beginning, or end in the model.

Inhomogeneous and anisotropic cosmic fluid.

Abstract

Here we present a simple model of cosmic evolution in Einstein gravity, with the cosmic substratum being composed of an inhomogeneous and anisotropic fluid. The scale factor is supposed to be of Gaussian type. In this framework we show the existence of a continuously evolving eternal universe with no singularity, beginning or end.