Cosmological Solutions with Torsion in a Model of de Sitter Gauge Theory of Gravity

TL;DR

This paper explores cosmological solutions with torsion in a de Sitter gauge theory of gravity, showing that torsion can naturally explain the universe's transition from deceleration to acceleration without additional fields.

Contribution

It presents homogeneous and isotropic torsion solutions in a de Sitter gauge gravity model, offering a novel explanation for cosmic acceleration.

Findings

Torsion plays a crucial role in universe evolution.

Solutions can fit supernova data with proper parameters.

Provides a natural transition from decelerating to accelerating expansion.

Abstract

The torsion is shown to be vitally important in the explanation of the evolution of the universe in a large class of gravitational theories containing quadratic terms of curvature and torsion. The cosmological solutions with homogeneous and isotropic torsion in a model of de Sitter gauge theory of gravity are presented, which may explain the observation data for SN Ia when parameters are suitably chosen and supply a natural transit from decelerating expansion to accelerating expansion without the help of the introduction of other strange fields in the theory.