Bounce Models within Teleparallel modified gravity
General Relativity and Quantum Cosmology
2021-01-20 v2
Abstract
In this paper, working in a Friedman-Lemaitre-Robertson-Walker (FLRW), first, in the flat case, we recover the generalized Friedman equation of Quantum Loop cosmology, and therefore the cosmological bounce, in the framework of modified teleparallel gravity -model, being the torsion scalar introduced in teleparallel gravity approach, without invoking unconventional exotic matter. Furthermore we study the associated perturbations again in a flat FLRW space-time. Then, we generalize the results to the curved FLRW space-time, where some issues related to the choice of tetrad exist, by using an appropriate formulation. In this context, the results of Born-Infeld model are also investigated.
Keywords
Cite
@article{arxiv.2010.07609,
title = {Bounce Models within Teleparallel modified gravity},
author = {Alessandro Casalino and Bruno Sanna and Lorenzo Sebastiani and Sergio Zerbini},
journal= {arXiv preprint arXiv:2010.07609},
year = {2021}
}
Comments
13 pages, version accepted for publication on PRD