Accelerating universe in modified teleparallel gravity theory

Abstract

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.