Does diffusion mechanism favor the emergent scenario of the universe?

TL;DR

This paper models the universe as a diffusive fluid within a flat FLRW framework, showing that diffusion mechanisms can lead to an emergent universe scenario through thermodynamic evolution equations.

Contribution

It introduces a novel approach by incorporating diffusion in cosmic matter and demonstrates how this can produce an emergent universe scenario.

Findings

Diffusive cosmic fluid can produce an emergent universe scenario.

Thermodynamic evolution equations support the emergent model.

Diffusion mechanism influences the universe's early evolution.

Abstract

In the present work, the flat FLRW Universe has been modelled with cosmic matter in the form of diffusive barotropic fluid. The diffusive fluid undergoes dissipation due to diffusion mechanism in the form of cosmological scalar field. From the perspective of non-equilibrium thermodynamics, the evolution equations of the universe have been formulated. By a suitable choice of the cosmological scalar field, emergent scenario of the universe has been obtained.