Attractor Solutions in f(T) Cosmology

TL;DR

This paper investigates the stability and attractor solutions of interacting dark energy models within f(T) gravity, demonstrating how such models can address the coincidence problem across various dark energy types.

Contribution

It introduces a comprehensive analysis of interacting dark energy in f(T) gravity, identifying stable attractor solutions for different dark energy forms and showing their effectiveness in solving the coincidence problem.

Findings

Multiple attractor solutions identified for different dark energy models.

Interacting dark energy models can naturally explain the coincidence problem.

Stability analysis confirms robustness of the solutions.

Abstract

In this paper, we explore the cosmological implications of interacting dark energy model in a torsion based gravity namely $f(T)$. Assuming dark energy interacts with dark matter and radiation components, we examine the stability of this model by choosing different forms of interaction terms. We consider three different forms of dark energy: cosmological constant, quintessence and phantom energy. We then obtain several attractor solutions for each dark energy model interacting with other components. This model successfully explains the coincidence problem via the interacting dark energy scenario.