Dark energy constraint on equation of state parameter in the Weyl type [formula omitted] gravity

Abstract

The equation of state parameter is a significant method for characterizing dark energy models. We investigate the evolution of the equation of state parameter with redshift using a Bayesian analysis of recent observational datasets (the Cosmic Chronometer data (CC) and Pantheon samples). The Chevallier–Polarski–Linder parametrization of the effective equation of state parameter, ωeff=ω0+ωaz1+z, where ω0 and ωa are free constants, is confined to the Weyl type f(Q,T) gravity, where Q represents the non-metricity and T is the trace of the energy–momentum tensor. We observe the evolution of the deceleration parameter q, the density parameter ρ, the pressure p, and the effective equation of state parameter ω. The cosmic data limit for ω does not exclude the possibility of ω<−1. It is seen that the parameter ω shows a transition from deceleration to acceleration, as well as a shift from ω>−1 to ω<−1.