Squared Torsion f (T, T) f (T, T) Gravity and Its Cosmological Implications

Abstract We present the coupling of the torsion scalar T and the trace of energy‐momentum tensor , which produces new modified gravity. Moreover, we consider the functional form where α and β are free parameters. As an alternative to a cosmological constant, the theory may offer a theoretical explanation of the late‐time acceleration. The recent observational data to the considered model especially the bounds on model parameters is applied in detail. Furthermore, we analyze the cosmological behavior of the deceleration, effective equation of state and total equation of state parameters. However, it is seen that the deceleration parameter depicts the transition from deceleration to acceleration and the effective dark sector shows a quintessence‐like evolution.