📝 SummarXiv

Abstract

In this study, we investigate the cosmological implications of two DE models, introduced by Chen \& Jing \cite{modelhigher} and by Granda \& Oliveros \cite{gohnde}. The first model comprises three principal components: one term proportional to the Hubble parameter $ H$ squared, and two additional terms proportional to the first and second time derivatives of $ H $, respectively. The second model, known as New Holographic Dark Energy (NHDE) model, can be considered a generalization of the Ricci DE model and it contains a term proportional to the Hubble parameter $H$ squared and one to the first time derivative of $H$. We derive the analytical expressions for the reduced Hubble parameter squared $h^2$, the Equation of State (EoS) parameter of Dark Energy (DE) $\omega_D $, the pressure of DE $p_D$ and of the deceleration parameter $q $ considering both non-interacting and later on interacting DM and DE. We also consider some limiting cases for the integration constants obtained. Furthermore, we explore the limiting scenario of a flat, dark energy-dominated Universe and establish a correspondence between the proposed DE models and various scalar field frameworks. Specifically, we examine their connection with the Generalized Chaplygin Gas, the Modified Chaplygin Gas, the Modified Variable Chaplygin Gas, the Viscous Generalized Chaplygin Gas, as well as scalar field models based on Dirac-Born-Infeld theory, Yang-Mills theory and Nonlinear Electrodynamics.