Cosmological tests of parametrization q = α − β H in f(Q) FLRW cosmology

Abstract

In this paper, we investigate the accelerated expansion of the Universe in the context of [Formula: see text] modified theory of gravity, where [Formula: see text] is a non-metricity scalar which characterizes the gravitational interaction by using parametrization of the deceleration parameter [Formula: see text] with [Formula: see text], where [Formula: see text] and [Formula: see text] are free parameters constrained by the 57 points of [Formula: see text] datasets, 1048 points of Pantheon, 10 points from Baryon Acoustic Oscillations (BAO) datasets and the shift parameters from Planck 2018 of Cosmic Microwave Background (CMB). In the purpose of validating our model, we proceed by the Om diagnostic and the energy conditions. Later we discussed how our model statistically supports [Formula: see text]CDM using [Formula: see text] criterion analysis.