Model parameters in the context of late time cosmic acceleration in f(Q,T) gravity

The dynamical aspects of some accelerating models are investigated in the framework of an extension of symmetric teleparallel gravity dubbed as f(Q, T) gravity. In this gravity theory, the usual Ricci tensor in the geometrical action is replaced by a functional f(Q, T) where Q is the non-metricity and T is the trace of the energy-momentum tensor. Two different functional forms are considered in the present work. In order to model the Universe, we have considered a signature flipping deceleration parameter simulated by a hybrid scale factor (HSF). The dynamical parameters of the model are derived and analysed. We discuss the role of the parameter space in getting viable cosmological models. It is found that, the models may be useful as suitable geometrical alternatives to the usual dark energy approach.

Automated summary

The dynamical aspects of accelerating models in f(Q, T) gravity framework are investigated with consideration of different functional forms and signature flipping deceleration parameter. The model's dynamical parameters are derived and analyzed, suggesting that these models may serve as suitable geometrical alternatives to the usual dark energy approach.