Scalar field induced dynamical evolution in teleparallel gravity

TL;DR

This paper explores how scalar fields with different potentials influence the universe's evolution in a teleparallel gravity framework, focusing on bouncing cosmology and dark energy implications.

Contribution

It introduces a non-minimally coupled scalar field in teleparallel gravity and analyzes its impact on the universe's dynamical evolution during a matter bounce scenario.

Findings

Scalar field potentials significantly affect the equation of state near the bounce

Different potentials lead to varied inflationary behaviors

The model provides insights into dark energy dynamics in teleparallel gravity

Abstract

In this paper, we investigate the role of scalar field potentials in the dynamical evolution of the Universe. A gravity theory with a non-minimally coupled scalar field with torsion in the geometrical action simulating effective dark energy is considered to study an extended matter bounce scenario. The dynamical behaviour of the equation of state parameter has been studied near the bouncing epoch. Keeping in mind the inflationary behaviour near the bounce, five different scalar field potential functions are explored, and their effect on the equation of state parameter is investigated.