Chen-Wu type model and the total energy of the universe

TL;DR

This paper explores a Chen-Wu type model with a specific cosmological constant form, analyzing its implications for the universe's total energy and comparing density contrast growth with standard cosmology.

Contribution

It introduces a novel ansatz for the cosmological constant related to the universe's total energy density and examines its cosmological consequences.

Findings

The model provides a different evolution of the universe's energy components.

Comparison shows differences in the growth mode of density contrast.

The ansatz aligns with observational cosmology developments.

Abstract

The inclusion of a $\Lambda $ term, today, in the relativistic field equations is consequence of the evolution of an observational cosmology. In this work we argue the "ansatz" $\Lambda = \beta H^2 +\frac{\alpha}{R^2}$ is applicable to the total energy density of the universe, discuss some cosmological consequences and compare the growing mode of the density contrast with the corresponding mode of the standard model.