Torsion cosmological dynamics

TL;DR

This paper explores the late-time behavior of torsion cosmology models, demonstrating their insensitivity to initial conditions and highlighting the significance of scalar torsion as a geometric quantity for physics.

Contribution

It introduces the use of dynamical attractors and heteroclinic orbits to address fine-tuning issues in torsion cosmology and emphasizes the role of scalar torsion in late-time cosmological dynamics.

Findings

Identification of late-time de Sitter attractor.

Numerical solutions are quasi-periodic near the focus.

Torsion cosmology offers an elegant geometric framework.

Abstract

In this paper, the dynamical attractor and heteroclinic orbit have been employed to make the late-time behaviors of the model insensitive to the initial condition and thus alleviate the fine-tuning problem in the torsion cosmology. The late-time de Sitter attractor indicates that torsion cosmology is an elegant scheme and the scalar torsion mode is an interesting geometric quantity for physics. The numerical solutions obtained by Nester et al. are not periodic solutions, but are quasi-periodic solutions near the focus for the coupled nonlinear equations.