Dynamics of Mixed Dark Energy Domination in Teleparallel Gravity and Phase-Space Analysis

TL;DR

This paper introduces a new dark energy model combining tachyon, quintessence, and phantom fields in teleparallel gravity, demonstrating through phase-space analysis that it can lead to late-time cosmic acceleration.

Contribution

It proposes a mixed dark energy model with nonminimal couplings in teleparallel gravity and analyzes its phase-space dynamics to show accelerated expansion solutions.

Findings

Identification of late-time accelerated attractor solutions

Demonstration of cosmic acceleration without dark matter or baryonic matter

Use of numerical phase-space analysis for model dynamics

Abstract

We consider a novel dark energy model to investigate whether it will provide an expanding universe phase. Here we propose a mixed dark energy domination which is constituted by tachyon, quintessence, and phantom scalar fields nonminimally coupled to gravity, in the absence of background dark matter and baryonic matter, in the framework of teleparallel gravity. We perform the phase-space analysis of the model by numerical methods and find the late-time accelerated attractor solutions implying the acceleration phase of universe.