Constrained cosmological model in $f(Q,T)$ gravity with non-linear non-metricity

Abstract

The $f(Q,T)$ cosmological model has emerged as a promising framework for understanding various aspects of cosmic evolution. In this study, we focused on obtaining the constraints of the free parameters in the non-linear form of non-metricity in $f(Q,T)$ gravity using the $Hubble$, $Pantheon$, and $BAO$ datasets. To determine the best-fit values for the model parameters and the equation of state (EoS) parameter, we employed an MCMC analysis. By examining the error bar plots, we observed that both the model curve and the $\Lambda$CDM curve successfully passed through the range obtained from the datasets. Additionally, we studied the state finder diagnostics and energy conditions to gain insights into the properties of the model. Furthermore, we conducted an analysis using the $Om(z)$ diagnostic, which provides a null test for the validity of the $\Lambda$CDM model.

11 pages, 7 figures

References in corpus (21)

• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• f(R,T) gravity
• Modified teleparallel gravity: inflation without inflaton
• Supernova Constraints and Systematic Uncertainties from the First 3 Years of the Supernova Legacy Survey
• Two new diagnostics of dark energy
• Cosmological solutions and growth index of matter perturbations in $f(Q)$ gravity
• First evidence that non-metricity f(Q) gravity could challenge $\Lambda$CDM
• Testing $F(Q)$ gravity with redshift space distortions
• Wormhole geometries in $f(Q)$ gravity and the energy conditions
• Can $f(Q)$ gravity challenge $\Lambda$CDM?
• Cosmology in $f(Q)$ gravity: A unified dynamical system analysis at background and perturbation levels
• Implications for the Hubble tension from the ages of the oldest astrophysical objects
• Cosmological Perturbation Theory in $f(Q,T)$ Gravity
• Dynamical system analysis for accelerating models in non-metricity $f(Q)$ gravity
• Cosmological Inflation in f(Q, T) Gravity
• Is there evidence for dark energy evolution?
• Reconstructing isotropic and anisotropic $f(\mathcal{Q})$ cosmologies
• Constrained $f(Q,T)$ gravity accelerating cosmological model and its dynamical system analysis
• Model parameters in the context of late time cosmic acceleration in $f(Q,T)$ gravity
• Evolutionary behaviour of cosmological parameters with dynamical system analysis in f (Q, T) gravity
• Weyl type $f(Q,T)$ gravity observational constrained cosmological model

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• Tracing cosmic evolution through Weyl-Type f(Q,T) gravity model: theoretical analysis and observational validation
• Observational constrained Weyl type $f(Q,T)$ gravity cosmological model and the dynamical system analysis
• Constraining Exponential f(Q) Gravity with Cosmic Chronometers and Supernovae: A Data-Driven Analysis
• Accelerating behavior from dynamical system analysis parameters
• Logarithmic and Strong Coupling Models in Weyl-Type $f(Q,T)$ Gravity
• Reconstruction of Tsallis Holographic Dark Energy via Modified Non-Metric Gravity: An $f(Q,C)$ Approach
• Exploring the Viability of $f(Q,T)$ Gravity: Constraining Parameters with Cosmological Observations