Natural scaling for dark energy

TL;DR

This paper introduces a novel dark energy model based on the Gauss-Bonnet invariant, which aligns well with observations and exhibits quintom behavior without future singularities.

Contribution

It proposes a new dark energy density model using the Gauss-Bonnet invariant, avoiding black hole limits and fitting observational data effectively.

Findings

Model fits recent cosmological observations

Exhibits quintom behavior without future singularities

Provides an alternative to holographic dark energy models

Abstract

We propose a dark energy density based on the Gauss-Bonnet 4-dimensional invariant and its modification. This model avoids the necessity of introducing the black hole limit to define the holographic density, since it can be considered as a non-saturated regime. This allows to describe the dark energy with an equation of state and Hubble parameter behaving in a way that can be adjusted very well to recent observations. The model presents quintom behavior without any future finite-time singularities.