Holographic reconstruction of $f(G)$ Gravity for scale factors pertaining to Emergent, Logamediate and Intermediate scenarios

TL;DR

This paper reconstructs holographic dark energy within $f(G)$ gravity for various cosmological scale factors, analyzing accelerated expansion and stability through numerical and graphical methods.

Contribution

It introduces a novel reconstruction of $f(G)$ gravity models with holographic dark energy for emergent, logamediate, and intermediate scale factors, including stability analysis.

Findings

Models exhibit accelerated expansion.

Stability depends on squared speed of sound.

Graphical analysis confirms theoretical predictions.

Abstract

In this paper, we reconstruct the holographic dark energy in the framework of $f(G)$ modified theory of gravity, where $G$ is Gauss-Bonnet invariant. In this context, we choose the infrared cut-off as Granda-Oliveros cut-off which is proportional to the Hubble parameter $H$ and its first derivative with respect to the cosmic time $t$. We reconstruct $f(G)$ model with the inclusion of HDE and three well-known forms of the scale factor $a(t)$, i.e. the emergent, the logamediate and the intermediate scale factors. The reconstructed model as well as equation of state parameter are discussed numerically with the help of graphical representation to explore the accelerated expansion of the universe. Moreover, the stability of the models incorporating all the scale factors is checked through squared speed of sound $v_s^2$.