  The dynamical aspects of some accelerating models are investigated in the
framework of an extension of symmetric teleparllel 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.
