Can $f(T)$ models play a bridge between early and late time Universe?

TL;DR

This study investigates two hybrid $f(T)$ gravity models to determine if they can unify early universe nucleosynthesis with late-time cosmic acceleration, finding them to be viable candidates for explaining different cosmic epochs.

Contribution

The paper introduces and constrains two hybrid $f(T)$ models using both early and late universe observations, demonstrating their potential to connect different cosmic epochs.

Findings

Models are consistent with primordial nucleosynthesis data.

Models agree with late-time cosmic chronometer and gamma-ray burst observations.

Models can describe the transition between early and late universe epochs.

Abstract

The ability of Big Bang Nucleosynthesis theory to accurately predict the primordial abundances of helium and deuterium, as well as the baryon content of the Universe, is considered one of the most significant achievements in modern physics. In the present study, we consider two highly motivated hybrid $f(T)$ models and constrain them using the observations from the Big Bang Nucleosynthesis era. In addition, using late-time observations of Cosmic Chronometers and Gamma-Ray-Bursts, the ranges of the model parameters are confined which are in good agreement with early time bounds. Subsequently, the common ranges obtained from the analysis for early and late time are summarized. Further, we verify the intermediating epochs by investigating the profiles of cosmographic parameters using the model parameter values from the common range. From this study, we find the considered teleparallel models are viable candidates to explain the primordial-intermediating-present epochs.