Cosmography in $f(Q)$ gravity

Abstract

Cosmography is an ideal tool to investigate the cosmic expansion history of the Universe in a model-independent way. The equations of motion in modified theories of gravity are usually very complicated; cosmography may select practical models without imposing arbitrary choices a priori. We use the model-independent way to derive $f(z)$ and its derivatives up to fourth order in terms of measurable cosmographic parameters. We then fit those functions into the luminosity distance directly. We perform the MCMC analysis by considering three different sets of cosmographic functions. Using the largest supernovae Ia Pantheon sample, we derive the constraints on the Hubble constant $H_0$ and the cosmographic functions, and find that the former two terms in Taylor expansion of luminosity distance work dominantly in $f(Q)$ gravity.

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• Extended Gravity Cosmography
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• Cosmography of f(R) gravity
• Energy Conditions in $f(Q)$ gravity
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Cited by in corpus (16)

• Spherically symmetric configuration in $f(Q)$ gravity
• Post-Newtonian limit of generalized symmetric teleparallel gravity
• On the impact of $f(Q)$ gravity on the Large Scale Structure
• Isotropization of locally rotationally symmetric Bianchi-I universe in $f(Q)$-gravity
• Late-time cosmology with phantom dark-energy in $f(Q)$ gravity
• Constraining effective equation of state in $f(Q,T)$ gravity
• Cosmological bouncing scenarios in symmetric teleparallel gravity
• Accelerating Universe scenario in anisotropic $f\left(Q\right)$ cosmology
• A study of anisotropic spheres in $f(Q)$ gravity with quintessence field
• Power-law cosmology in Weyl-type $f(Q,T)$ gravity
• Transit String Dark Energy Models in $f(Q)$ Gravity
• Bulk viscous fluid in extended symmetric teleparallel gravity
• $f(Q,T)$ gravity, its covariant formulation, energy conservation and phase-space analysis
• Barrow holographic dark energy models in $f\left(Q\right)$ symmetric teleparallel gravity with Lambert function distribution
• Quantum Cosmology in $f(Q)$ theory
• Metric-Affine Myrzakulov Gravity Theories