The interacting generalized Ricci dark energy model in non-flat universe

TL;DR

This paper investigates an interacting holographic Ricci dark energy model in a non-flat universe, using recent astrophysical data to constrain its parameters and assess the universe's curvature.

Contribution

The study extends previous models by including interactions and non-flat geometry, providing observational constraints on the curvature and interaction parameters.

Findings

Allowed curvature density range: -0.005 to 0.015.

Interaction influences the flatness preference of the universe.

Without interaction, flat universe is disfavored.

Abstract

We extend our previous analysis and consider the interacting holographic Ricci dark energy (IRDE) model in non-flat universe. We study astrophysical constraints on this model using the recent observations including the type Ia supernovae (SNIa), the baryon acoustic oscillation (BAO), the cosmic microwave background (CMB) anisotropy, and the Hubble parameter. It is shown that the allowed parameter range for the fractional energy density of the curvature is $-0.005$ $\lesssim$ $\Omega_{k0}$ $\lesssim$ $0.015$ in the presence of the interactions between dark energy and matter. Without the interaction, the flat universe is observationally disfavored in this model.