Density Evolution in the New Modified Chaplygin Gas Model

TL;DR

This paper investigates the density evolution in a new modified Chaplygin gas model that unifies dark energy and dark matter, interpolating between radiation and $ m{ extLambda}$CDM, and derives related density parameters.

Contribution

It introduces a new modified Chaplygin gas model and analyzes its density evolution and interaction between dark energy and dark matter.

Findings

Density parameters derived from equations of motion.

Evolution of density components studied.

Model unifies dark energy and dark matter.

Abstract

In this paper, we have considered new modified Chaplygin gas (NMCG) model which interpolates between radiation at early stage and $\Lambda$CDM at late stage. This model is regarded as a unification of dark energy and dark matter (with general form of matter). We have derived the density parameters from the equation of motion for the interaction between dark energy and dark matter. Also we have studied the evolution of the various components of density parameters.