Cosmological implications of an interacting model of dark matter \& dark energy

TL;DR

This paper investigates an interacting dark energy model within a Friedmann-Robertson-Walker universe, analyzing cosmic evolution, testing cosmological parameters, and reconstructing scalar field potential to understand dark matter and dark energy interactions.

Contribution

It introduces a specific interacting dark energy model, explores its cosmological implications, and tests its validity against observational data, including scalar field reconstruction and swampland conjecture analysis.

Findings

Cosmological parameters evolve consistently with observational data.

The scalar field potential is reconstructed, providing insights into dark energy dynamics.

The model refutes the refined swampland conjecture based on the analysis.

Abstract

In this paper, we have studied an interacting dark energy model. We have assumed the gravitational interaction between the matter fields i.e. between barotropic fluid and the dark energy. The dark energy evolution within the framework of spatially homogeneous and isotropic Friedmann-Robertson-Walker space-time. Therefore, we examine the cosmic evolution from the perspective of interacting scenario by selecting a suitable ansatz for the scale factor resulting from a parametrization of Hubble parameter. The evolution of the cosmological parameters are discussed in some details in the considered interacting scenario by calculating parameters and quantities such as deceleration parameter, energy density, pressure, equation of state (EoS) etc. Also, we have performed some cosmological tests and analysis in support of our obtained interacting model. Finally, we reconstruct the potential of the scalar field and refute the refined swampland conjecture using the equation of state of dark energy and the relationship between energy density and pressure with the scalar field and potential, and then thoroughly describe the findings.