Dynamics of Generalized Tachyon Field in Teleparallel Gravity

TL;DR

This paper investigates the behavior of a generalized tachyon scalar field within teleparallel gravity, revealing new scaling attractors that could help address the cosmological coincidence problem.

Contribution

It introduces a generalized tachyon field model in teleparallel gravity with novel scaling attractors absent in previous models.

Findings

Discovery of scaling attractors in the model

Scaling attractors exist for both interacting and non-interacting cases

Potential to alleviate the cosmological coincidence problem

Abstract

We study dynamics of generalized tachyon scalar field in the framework of teleparallel gravity. This model is an extension of tachyonic teleparallel dark energy model which has been proposed in [26]. In contrast with tachyonic teleparallel dark energy model that has no scaling attractors, here we find some scaling attractors which means that the cosmological coincidence problem can be alleviated. Scaling attractors present for both interacting and non-interacting dark energy, dark matter cases.