A Complete Cosmological Scenario in Teleparallel Gravity

Abstract

Teleparallel gravity is a modified theory of gravity in which the Ricci scalar R of the Lagrangian replaced by the general function of torsion scalar T in action. With that, cosmology in teleparallel gravity becomes profoundly simplified because it is second-order theory. The article present a complete cosmological scenario in f (T) gravity with f (T) = T + β(−T) α , where α, and β are model parameters. We present the profiles of energy density, pressure, and equation of state (EoS) parameter. Next to this, we employ statefinder diagnostics to check deviation from the ΛCDM 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.

Cosmological bouncing scenarios in symmetric teleparallel gravity

“…The energy conditions as null (NEC), weak (WEC), dominant (DEC), and strong (SEC) energy conditions are the four fundamental conditions that are often required in the proofs of various important theorems about black holes, such as the laws of black hole thermodynamics in the general theory of relativity. These conditions have investigated in various modified theories of gravity such as [25,26,27,28,29,30,31,32].…”