Acceleration in Weyl integrable spacetime

TL;DR

This paper investigates cosmological models within Weyl integrable spacetime, demonstrating that the scalar field can induce late-time accelerated expansion of the universe, acting as a phantom field under certain conditions.

Contribution

It introduces the role of the Weyl scalar field as a phantom field driving cosmic acceleration in homogeneous and isotropic cosmologies.

Findings

Weyl scalar field can act as a phantom field.

The model predicts late accelerated expansion for various initial conditions.

Acceleration occurs across a wide parameter range.

Abstract

We study homogeneous and isotropic cosmologies in a Weyl spacetime. It is shown that in Weyl integrable spacetime, the corresponding scalar field may act as a phantom field. In this circumstance the Weyl field gives rise to a late accelerated expansion of the Universe for all initial conditions and for a wide range of the parameters.