$f(T)$ models with phantom divide line crossing

TL;DR

This paper introduces two novel $f(T)$ gravity models that enable the crossing of the phantom divide line in the effective equation of state, and uses observational data to constrain their parameters.

Contribution

The paper proposes new $f(T)$ models that allow phantom divide crossing and provides observational constraints on these models.

Findings

Observations favor models with phantom divide crossing.

Best-fit parameters support the crossing scenario.

Models are consistent with current observational data.

Abstract

In this paper, we propose two new models in $f(T)$ gravity to realize the crossing of the phantom divide line for the effective equation of state, and we then study the observational constraints on the model parameters. The best fit results suggest that the observations favor a crossing of the phantom divide line.