Isotropic turbulence in the dark fluid universe with inhomogeneous equation of state

TL;DR

This paper explores how turbulence in a dark fluid universe with an inhomogeneous equation of state affects cosmic stability and the avoidance of the Big Rip, showing turbulence energy converts into heat, stabilizing the universe.

Contribution

It introduces a perturbative analysis of turbulence effects near the Big Rip and examines the stability of the universe considering turbulence energy as part of dark fluid.

Findings

Turbulence effects are analyzed around the Big Rip.

Stability improves as turbulence energy decreases.

Turbulence energy converts into heat, aiding in Big Rip avoidance.

Abstract

We investigate the turbulence effect in dark fluid universe with linear inhomogeneous equation of state. Attention is attached to two physical situations. First, we perform the perturbative analysis of turbulence and check its effects around the Big Rip. Later, treating the turbulence energy density as a part of total dark fluid, we study the stability of the system. The result shows that the stability is achieving as the energy density of turbulence decreases, changing into heat (the radiation), in perfect agreement with the avoidance of the Big Rip.