Eur. Phys. J. Plus (2015) 130: 94
https://doi.org/10.1140/epjp/i2015-15094-4

Regular Article

Energy conditions in f (T, T_G) gravity

Department of Mathematics, COMSATS Institute of Information Technology, Lahore, Pakistan

^* e-mail: abduljawad@ciitlahore.edu.pk

Received: 12 December 2014
Revised: 27 March 2015
Accepted: 8 April 2015
Published online: 19 May 2015

Abstract

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.