Interacting Holographic Extended Chaplygin Gas and Phantom Cosmology in the Light of BICEP2

TL;DR

This paper explores a cosmological model combining holographic dark energy, extended Chaplygin gas, and phantom energy, using BICEP2 data to constrain parameters and analyze tensor-to-scalar ratios.

Contribution

It reconstructs scalar fields for extended Chaplygin gas within holographic dark energy models and constrains them using recent BICEP2 observations.

Findings

Derived energy densities for interacting components

Analyzed tensor-to-scalar ratio consistent with BICEP2 data

Constrained model parameters using observational data

Abstract

In this paper, we study the holographic dark energy density and interacting extended Chaplygin gas energy density in the Einstein gravity. We reconstruct the scalar field and the scalar potential describing the extended Chaplygin gas. In the special case, we obtain energy density and investigate some cosmological parameters. Assuming interaction between components we find energy density for some different parametrization of total EoS. We analyze tensor to scalar ratio and use recent observational data of BICEP2 to fix the model parameters.