A complete cosmological scenario in teleparallel gravity
Department of Mathematics, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, 500078, Hyderabad, India
Accepted: 27 August 2020
Published online: 8 September 2020
Teleparallel gravity is a modified theory of gravity in which the Ricci scalar R of the Lagrangian is replaced by the general function of torsion scalar T in action. With that, cosmology in teleparallel gravity becomes profoundly simplified because it is a second-order theory. The article presents a complete cosmological scenario in f(T) gravity with , where and are model parameters. We present the profiles of energy density, pressure, and equation-of-state parameter. Next to this, we employ statefinder diagnostics to check deviation from the CDM model as well as the nature of dark energy. Finally, we discuss the energy conditions to check the consistency of our model and observe that SEC violates in the present model supporting the acceleration of the universe as per present observation.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2020