Coupled tachyonic dark energy: a dynamical analysis

TL;DR

This paper performs a dynamical systems analysis of a coupled tachyonic dark energy model interacting with dark matter, examining its behavior across different cosmological eras for a general potential.

Contribution

It introduces a comprehensive dynamical analysis of coupled tachyonic dark energy with dark matter, considering multiple cosmological eras and a generic potential.

Findings

Identification of critical points for different cosmological eras

Analysis of stability conditions for the dark energy model

Insights into the evolution of the universe with tachyonic fields

Abstract

In this paper we present a dynamical analysis for a coupled tachyonic dark energy with dark matter. The tachyonic field $\phi$ is considered in the presence of barothropic fluids (matter and radiation) and the autonomous system due to the evolution equations is studied. The three cosmological eras (radiation, matter and dark energy) are described through the critical points, for a generic potential $V(\phi)$.