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arXiv · 2003.10908

Accelerating universe in modified teleparallel gravity theory

Shambel Sahlu·Joseph Ntahompagaze·Amare Abebe·David F. Mota
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Abstract

This paper studies the cosmology of accelerating expansion of the universe in modified teleparallel gravity theory. We discuss the cosmology of $f(T,B)$ gravity theory and its implication to the new general form of the equation of state parameter $w_{TB}$ for explaining the late-time accelerating expansion of the universe without the need for the cosmological constant scenario. We examine the numerical value of $w_{TB}$ in different paradigmatic $f(T,B)$ gravity models. In those models, the numerical result of $w_{TB}$ is favored with observations in the presence of the torsion scalar T associated with a boundary term B and shows the accelerating expansion of the universe.

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Shambel Sahlu, Joseph Ntahompagaze, Amare Abebe, David F. Mota. 2020-03-23. Accelerating universe in modified teleparallel gravity theory. https://doi.org/10.1017/s1743921320003567

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