A comprehensive parametrization approach for the Hubble parameter in scalar field dark energy models

Abstract

This study proposes a novel parametrization approach for the dimensionless Hubble parameter i.e. $E^2(z)=A(z)+\beta (1+\gamma B(z))$ in the context of scalar field dark energy models. The parameterization is characterized by two functions, $A(z)$ and $B(z)$, carefully chosen to capture the behavior of the Hubble parameter at different redshifts. We explore the evolution of cosmological parameters, including the deceleration parameter, density parameter, and equation of state parameter. Observational data from Cosmic Chronometers (CC), Baryonic Acoustic Oscillations (BAO), and the Pantheon+ datasets are analyzed using MCMC methodology to determine model parameters. The results are compared with the standard $\Lambda$CDM model using the Planck observations. Our approach provides a model-independent exploration of dark energy, contributing to a comprehensive understanding of late-time cosmic acceleration.

arXiv commentResults in Physics accepted version

References in corpus (67)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Dynamics of dark energy
• The Cosmological Constant and Dark Energy
• Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
• Modified Gravity and Cosmology
• A Phantom Menace? Cosmological consequences of a dark energy component with super-negative equation of state
• Cosmological Constant - the Weight of the Vacuum
• 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
• Accelerating Universes with Scaling Dark Matter
• Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
• A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km/s/Mpc Uncertainty from the Hubble Space Telescope and the SH0ES Team
• Phantom Energy and Cosmic Doomsday
• A 2.4% Determination of the Local Value of the Hubble Constant
• Essentials of k-essence
• Baryon Acoustic Oscillations in the Sloan Digital Sky Survey Data Release 7 Galaxy Sample
• Statefinder -- a new geometrical diagnostic of dark energy
• Curvature Quintessence
• The Pantheon+ Analysis: Cosmological Constraints
• 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
• Constraining Cosmological Parameters Based on Relative Galaxy Ages
• Coincident General Relativity
• The Pantheon+ Analysis: The Full Dataset and Light-Curve Release
• Observational Constraints on the Nature of the Dark Energy: First Cosmological Results from the ESSENCE Supernova Survey
• Baryon Acoustic Oscillations in the Lyα forest of BOSS DR11 quasars
• Cosmology in $f(Q)$ geometry
• The HST Key Project on the Extragalactic Distance Scale. XXVIII. Combining the Constraints on the Hubble Constant
• A New Cosmological Model of Quintessence and Dark Matter
• H0LiCOW V. New COSMOGRAIL time delays of HE0435-1223: $H_0$ to 3.8% precision from strong lensing in a flat $\Lambda$CDM model
• WMAP constraints on low redshift evolution of dark energy
• Cosmic Microwave Background and Supernova Constraints on Quintessence: Concordance Regions and Target Models
• Gaussian Process Cosmography
• Model independent evidence for dark energy evolution from Baryon Acoustic Oscillations
• Local determination of the Hubble constant and the deceleration parameter
• From cosmic deceleration to acceleration: new constraints from SN Ia and BAO/CMB
• The role of energy conditions in $f(R)$ cosmology
• Transition Redshift: New Kinematic Constraints from Supernovae
• On the LCDM Universe in f(R) gravity
• A model independent approach to the dark energy equation of state
• Testing the Cosmic Coincidence Problem and the Nature of Dark Energy
• Holographic explanation of wide-angle power correlation suppression in the Cosmic Microwave Background Radiation
• The Pantheon+ Analysis: SuperCal-Fragilistic Cross Calibration, Retrained SALT2 Light Curve Model, and Calibration Systematic Uncertainty
• Model independent $H(z)$ reconstruction using the cosmic inverse distance ladder
• Three thermodynamically-based parametrizations of the deceleration parameter
• Modified gravity as an alternative for Lambda-CDM cosmology
• Constant-roll Inflation in $f(T)$ Teleparallel Gravity
• Observational constraints on two cosmological models of $f(Q)$ theory
• Cosmokinetics: A joint analysis of Standard Candles, Rulers and Cosmic Clocks
• A new parametrization of Hubble parameter in $f(Q)$ gravity
• Model Independent Tests of Cosmic Growth vs Expansion
• Constraints on barotropic dark energy models by a new phenomenological $q(z)$ parameterization
• Inflationary cosmology in unimodular $F(T)$ gravity
• Observational constraints on a logarithmic scalar field dark energy model and black hole mass evolution in the Universe
• Robust and model-independent cosmological constraints from distance measurements
• Probing the time dependence of dark energy
• Cosmological constraints on dark energy in $f(Q)$ gravity: A parametrized perspective
• A New $Om(z)$ Diagnostic of Dark Energy in General Relativity Theory
• An Accelerating Cosmological Model from a Parametrization of Hubble Parameter
• Reconstruction of interaction rate in Holographic dark energy model with Hubble horizon as the infrared cut-off
• A new $f(Q)$ cosmological model with $H(z)$ quadratic expansion
• Running of the Spectral Index and Inflationary Dynamics of $F(R)$ Gravity
• A model-independent method with phantom divide line crossing in Weyl-type $f(Q,T)$ gravity
• A model independent parametrization of the late time cosmic acceleration: constraints on the parameters from recent observations

Cited by in corpus (5)

• Constraints on anisotropic properties of the universe in $f(Q,T)$ gravity theory
• Exploring Universe acceleration through observational constraints via Hubble parameter reconstruction
• Exploring cosmological evolution and constraints in $f(T)$ teleparallel gravity
• Cosmological constraints on time-varying cosmological terms: A study of FLRW universe models with $\Lambda (t)$CDM cosmology
• Bulk viscous matter in $f(T)$ gravity: A path to cosmic acceleration