Flat LRW Universe in logarithmic symmetric teleparallel gravity with observational constraints

Abstract

In this paper, we study the homogeneous and isotropic flat LRW Universe in the logarithmic form of f (Q) gravity (where Q is the non-metricity scalar) i.e. f (Q) = α + β log (Q) where α and β are the model constant parameters. In this study, we consider a parametrization of the Hubble parameter as H (z) = η 1 + 1 (1+z) γ , where γ and η are model/free parameters which are constrained by an R 2 -test from 57 data points of the Hubble data set in the redshift range 0.07 < z < 2.36. The physical properties of the model are discussed. We study the energy conditions to check the compatibility of the model. We found the SEC is violated for the logarithmic form of f (Q) gravity due to the reality that the Universe in an accelerating phase. Finally, we discuss some important parameters in this context to compare our model with dark energy models such as jerk parameter, statefinder parameters.

Cosmic Evolution of the Logarithmic f(R) Model and the dS Swampland Conjecture

“…where [6,22,[91][92][93][94][95][96][97][98][99]. In general, the constant-roll condition for all inflation models, such as scalar field coupled to gravity and f (R) gravitational models, has been investigated.…”

Anisotropic f(Q) gravity model with bulk viscosity

“…In this work, we will examine a cosmological model in order to explain the cosmic acceleration in the framework of f (Q) symmetric teleparallel gravity proposed by Jiménez et al [23], where the non-metricity scalar Q is responsible for the gravitational interaction in this theory. Energy conditions [24], cosmography [25], spherically symmetric configuration [26], signature of f (Q) gravity [27], growth index of matter perturbations [28], coupling matter [29], quantum cosmology for a f (Q) polynomial model [30], geodesic deviation equation [31], isotropization of LRS Bianchi-I Universe [32], etc, all these topics have been discussed in the framework of f (Q) gravity by several researchers and also the reader can see our work in this context [33][34][35][36][37].…”