Energy conditions in f (T, TG) gravity
Department of Mathematics, COMSATS Institute of Information Technology, Lahore, Pakistan
* e-mail: firstname.lastname@example.org
Revised: 27 March 2015
Accepted: 8 April 2015
Published online: 19 May 2015
This paper is devoted to study the energy conditions in f(T, T G ) gravity for the FRW universe with perfect fluid, where T is the torsion scalar and T G is the quartic torsion scalar. We construct the energy conditions in this theory and discuss them for two specific f(T, T G ) models. These models are and , which represent viability through some cosmological scenarios. We consider cosmographic parameters to simplify the energy condition expressions. The present-day values of these parameters are assumed to check the constraints on model parameters through energy condition inequalities.
© Società Italiana di Fisica and Springer-Verlag Berlin Heidelberg, 2015