Weyl type $f(Q,T)$ gravity observational constrained cosmological model
Abstract
In this paper, we have studied the dynamical aspects of the cosmological model of the Universe in the Weyl type gravity, which is an extension of symmetric teleparallel gravity. The non-metricity scalar has been expressed in standard Weyl form and can be determined by a vector field and the trace of energy momentum tensor denoted as . The logarithmic form of the Hubble parametrization has been incorporated and the best fit values of the free parameters have been determined using sample points, and data points. The present value of the , and respectively for , and datasets. With the constrained values of the free parameters, the cosmographic parameters are constrained and the present value of each parameter has been noted. The deceleration parameter for , and datasets provides , and respectively at present time. We have considered exponential and non-linear form of the Weyl type function to assess the dynamical behaviour of the model. The accelerating cosmological models show the quintessence behaviour at present time as we get the present EoS parameter values obtained as and for , and for and and for respectively.
Keywords
Cite
@article{arxiv.2305.01659,
title = {Weyl type $f(Q,T)$ gravity observational constrained cosmological model},
author = {Rahul Bhagat and S. A. Narawade and B. Mishra},
journal= {arXiv preprint arXiv:2305.01659},
year = {2023}
}
Comments
14 pages, 11 Figures. Accepted version: Physics of the Dark Universe