Quintessence-like features in the late-time cosmological evolution of $f(Q)$ symmetric teleparallel gravity

Abstract

In this study, we investigate the cosmological history within the framework of modified $f(Q)$ gravity, which proposes an alternative theory of gravity where the gravitational force is described by a non-metricity scalar. By employing a parametrization scheme for the Hubble parameter, we obtain the exact solution to the field equations in $f(Q)$ cosmology. To constrain our model, we utilize external datasets, including 57 data points from the Hubble dataset, 1048 data points from the SN dataset, and six data points from the BAO dataset. This enables us to determine the best-fit values for the model parameters involved in the parameterization scheme. We analyze the cosmic evolution of various cosmological parameters, including the deceleration parameter, which exhibits the expected behavior in late-time cosmology and changes its signature with redshift. Further, we present the evolution of energy density, EoS parameter, and other geometrical parameters with respect to redshift. Furthermore, we discuss several cosmological tests and diagnostic analyses. Our findings demonstrate that the late-time cosmic evolution can be adequately described without the need for dark energy by employing a parametrization scheme in modified gravity.

arXiv commentChinese Journal of Physics published version

References in corpus (39)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• emcee: The MCMC Hammer
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• The Cosmological Constant and Dark Energy
• Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
• The Complete Light-curve Sample of Spectroscopically Confirmed Type Ia Supernovae from Pan-STARRS1 and Cosmological Constraints from The Combined Pantheon Sample
• The 6dF Galaxy Survey: Baryon Acoustic Oscillations and the Local Hubble Constant
• Baryon Acoustic Oscillations in the Sloan Digital Sky Survey Data Release 7 Galaxy Sample
• Statefinder -- a new geometrical diagnostic of dark energy
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Sky Maps, Systematic Errors, and Basic Results
• The WiggleZ Dark Energy Survey: mapping the distance-redshift relation with baryon acoustic oscillations
• Coincident General Relativity
• Two new diagnostics of dark energy
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Tests of Gaussianity
• The teleparallel equivalent of general relativity
• Cosmology in $f(Q)$ geometry
• $f(Q,T)$ gravity
• Observational constraints of $f(Q)$ gravity
• Coupling matter in modified $Q$-gravity
• Cosmological solutions and growth index of matter perturbations in $f(Q)$ gravity
• Thermodynamic interpretation of the generalized gravity models with geometry - matter coupling
• Cosmography of f(R) gravity
• From cosmic deceleration to acceleration: new constraints from SN Ia and BAO/CMB
• Energy conditions in $f(R,L_m)$ gravity
• Symmetric teleparallel general relativity
• Anisotropic nature of space-time in $f(Q)$ gravity
• Three thermodynamically-based parametrizations of the deceleration parameter
• Observational constraints on two cosmological models of $f(Q)$ theory
• Cosmic acceleration and energy conditions in $\Lambda$CDM symmetric teleparallel $f(Q)$ gravity
• Reconstruction of cosmic history from a simple parametrization of H
• Cosmological implications of modified gravity induced by quantum metric fluctuations
• A new parametrization of Hubble parameter in $f(Q)$ gravity
• Late-time acceleration in $f\left(Q\right)$ gravity: Analysis and constraints in an anisotropic background
• How predictions of cosmological models depend on Hubble parameter data sets
• Connecting early and late universe by $f(R)$ gravity
• Cosmic strings in $f\left(R,L_m\right)$ gravity
• Accelerating Universe scenario in anisotropic $f\left(Q\right)$ cosmology
• An Accelerating Cosmological Model from a Parametrization of Hubble Parameter

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