Holographic cosmology with two coupled fluids in the presence of viscosity

TL;DR

This paper investigates late-time cosmological models using holographic principles, incorporating viscous dark fluids and interactions between dark energy and dark matter, with analytical solutions for infrared cutoffs.

Contribution

It introduces a holographic cosmology framework with two coupled viscous fluids and derives analytical expressions for infrared cutoffs in specific cosmological models.

Findings

Analytical infrared cutoff expressions derived for various models

Inclusion of viscosity effects in holographic dark energy models

Interaction between dark energy and dark matter analyzed

Abstract

We explore the cosmological models of the late-time universe based on the holographic principle, taking into account the properties of the viscosity of the dark fluid. We use the mathematical formalism of generalized infrared cutoff holographic dark energy, as presented by Nojiri and Odintsov (2017). We consider the Little Rip, the Pseudo Rip, and a bounce exponential model, with two interacting fluids, namely dark energy and dark matter in a spatially-flat Friedmann-Robertson-Walker universe. Within these models, analytical expressions are obtained for infrared cutoffs in terms of the particle horizons. The law of conservation of energy is presented, from a holographic point of view.