Observational constraints on two cosmological models of $f(Q)$ theory

Abstract

In the past few years, $f(Q)$ theories have drawn a lot of research attention in replacing Einstein's theory of gravity successfully. The current study examines the novel cosmological possibilities emerging from two specific classes of $f(Q)$ models using the parametrization form of the equation of state (EoS) parameter as $\omega \left(z\right)=-\frac{1}{1+3\beta {\left(1+z\right)}^3}$, which displays quintessence behavior with the evolution of the Universe. We do statistical analyses using the Markov chain Monte Carlo (MCMC) method and background datasets like Type Ia Supernovae (SNe Ia) luminosities and direct Hubble datasets (from cosmic clocks), and Baryon Acoustic Oscillations (BAO) datasets. This lets us compare these new ideas about the Universe to the $\Lambda$CDM model in a number of different possible ways. We have come to the conclusion that, at the current level of accuracy, the values of their specific parameters are the best fits for our $f(Q)$ models. To conclude the accelerating behavior of the Universe, we further study the evolution of energy density, pressure, and deceleration parameter for these $f(Q)$ models.

EPJC accepted version

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Cited by in corpus (42)

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• Data reconstruction of the dynamical connection function in $f(Q)$ cosmology
• Investigating the dark energy phenomenon in $f(R,L_m)$ cosmological models with observational constraints
• Cosmological constraints on dark energy in $f(Q)$ gravity: A parametrized perspective
• Late-time cosmology in $f(Q,L_m)$ gravity: Analytical solutions and observational fits
• Constrained evolution of effective equation of state parameter in non-linear $f(R,L_m)$ dark energy model: Insights from Bayesian analysis of cosmic chronometers and Pantheon samples
• Constraining $f(Q,L_m)$ gravity with bulk viscosity
• Exploring accelerated expansion in the universe: A study of $f(Q,T)$ gravity with parameterized EoS and cosmological constraints
• Observational analysis of late-time acceleration in $f(Q,L_m)$ gravity
• Observational constraints on the equation of state of viscous fluid in $f(R,T)$ gravity
• Constraining the $f(R,T)=R+2\lambda T$ cosmological model using recent observational data
• Modelling the Accelerating Universe with $f(Q)$ Gravity: Observational Consistency
• Constraining the cosmological model of modified $f(Q)$ gravity: Phantom dark energy and observational insights
• Observational test for $f(Q)$ gravity with weak gravitational lensing
• Constraints on anisotropic properties of the universe in $f(Q,T)$ gravity theory
• Modeling cosmic acceleration with a generalized varying deceleration parameter
• A comprehensive parametrization approach for the Hubble parameter in scalar field dark energy models
• Exploring Universe acceleration through observational constraints via Hubble parameter reconstruction
• Equivalence of $f(Q)$ cosmology with quintom-like scenario: the phantom field as effective realization of the non-trivial connection
• Cosmological constraints on dynamical dark energy model in $F(Q)$ gravity
• Gravitational tensor and scalar modes in $f(Q,B)$ non-metric gravity
• Quintessence-like features in the late-time cosmological evolution of $f(Q)$ symmetric teleparallel gravity
• Modified cosmology in $f(Q,L_m)$ gravity
• Exploring cosmological evolution and constraints in $f(T)$ teleparallel gravity
• Probing Weyl-type $f(Q,T)$ gravity: Cosmological implications and constraints
• Bouncing behavior in $f(R,L_m)$ gravity: Phantom crossing and energy conditions
• Bulk viscous matter in $f(T)$ gravity: A path to cosmic acceleration
• Chameleon Mechanism in Scalar Nonmetricity Cosmology
• Signature flips in time-varying $\Lambda (t)$ cosmological models with observational data
• Constraining Exponential f(Q) Gravity with Cosmic Chronometers and Supernovae: A Data-Driven Analysis
• Energy conditions in $f(Q,L_m)$ gravity
• A generic dynamical system formulation for Bianchi-I cosmology with isotropic fluid in $f(Q)$ gravity
• Beyond $\Lambda$CDM: Exploring a Dynamical Cosmological Constant Framework Consistent with Late-Time Observations
• Diagnostic Approaches for Interacting generalized holographic Ricci Dark Energy Models
• Inconsistencies of nonmetric Einstein-Dirac-Maxwell theories and a cure for geometric flows of f(Q) black ellipsoid, toroid and wormhole solutions
• Vulnerability of f(Q) gravity theory and a possible resolution
• A Unified Dynamical Systems Framework for Cosmology in $f(Q)$ Gravity: Generic Features Beyond the Coincident Gauge
• General off-diagonal integrability of metric and nonmetric geometric flow and Finsler-Lagrange-Hamilton modified Einstein equations
• A Comparative Test of the LCDM and R_h=ct Cosmologies Based on Upcoming Redshift Drift Measurements
• Cosmic expansion history analysis with Hubble parametrization in $Q^n$ gravity