Dark energy constraint on equation of state parameter in the Weyl type f (Q, T) gravity

The equation of state parameter is a significant method for characterizing dark energy models. We investigate the evolu-tion of the equation of state parameter with redshift using 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 ( z parameter, coeff = co0 + coa ), where co0and coaare free 1+z 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 p, the pressure p, and the effective equation of state parameter co. The cosmic data limit for co does not exclude the possibility of co < -1. It is seen that the parameter co shows a transition from deceleration to acceleration, as well as a shift from co > -1 to co < -1.(c) 2023 Elsevier Inc. All rights reserved.