Reconstruction of the scalar field potential in nonmetricity gravity through Gaussian processes
arXiv:2411.00051 · doi:10.1016/j.physletb.2024.139232
Abstract
The accelerated expansion of the universe has been widely confirmed, posing challenges to the standard CDM model, particularly the cosmological coincidence problem. This has motivated the exploration of modified gravity theories, including non-metricity gravity, which explains cosmic acceleration without dark energy. In this work, we incorporate a quintessence scalar field into the non-metricity framework to model both inflation and late-time acceleration. Employing the Gaussian process method with a square exponential kernel, we reconstruct the scalar field potential, , from observational Hubble data sets coming from cosmic chronometers (CC) as well as from the method of radial baryon acoustic oscillations (BAO) in a model-independent approach. This approach allows us to obtain a suitable quintessence scalar field model that aligns with the observational Hubble data under the framework of power-law non-metricity gravity. Additionally, we compare our reconstructed potential with power-law scalar field potentials, revealing that these models show better agreement with the observational data, providing new insights into the dynamics of the universe. In contrast, we find that the early dark energy has minimal effect on the present-time accelerated expansion of the universe.
arXiv commentAccepted Version in Physics Letters B (PLB)
References in corpus (63)
- Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
- Measurements of Omega and Lambda from 42 High-Redshift Supernovae
- Planck 2015 results. XIII. Cosmological parameters
- Planck 2013 results. XVI. Cosmological parameters
- Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results
- f(R) Theories Of Gravity
- Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
- Modified Gravity and Cosmology
- f(R) theories
- Cosmological Imprint of an Energy Component with General Equation of State
- Extended Theories of Gravity
- The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
- Modified Gravity Theories on a Nutshell: Inflation, Bounce and Late-time Evolution
- Weak Gravitational Lensing
- Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Final Maps and Results
- The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in the Data Release 10 and 11 galaxy samples
- f(T) teleparallel gravity and cosmology
- Constraints on the redshift dependence of the dark energy potential
- Cosmic Chronometers: Constraining the Equation of State of Dark Energy. I: H(z) Measurements
- Raising the bar: new constraints on the Hubble parameter with cosmic chronometers at z2
- Coincident General Relativity
- The WiggleZ Dark Energy Survey: Joint measurements of the expansion and growth history at z < 1
- Rotation Curves of Spiral Galaxies
- Weak lensing mass reconstruction of the interacting cluster 1E0657-558: Direct evidence for the existence of dark matter
- Clustering of Luminous Red Galaxies IV: Baryon Acoustic Peak in the Line-of-Sight Direction and a Direct Measurement of H(z)
- Milky Way Cepheid Standards for Measuring Cosmic Distances and Application to Gaia DR2: Implications for the Hubble Constant
- Age-dating Luminous Red Galaxies observed with the Southern African Large Telescope
- Cosmology in geometry
- Teleparallel Gravity: From Theory to Cosmology
- Dynamical systems applied to cosmology: dark energy and modified gravity
- Observational constraints of gravity
- Coupling matter in modified -gravity
- Modeling the Anisotropic Two-Point Galaxy Correlation Function on Small Scales and Improved Measurements of H(z), D_A(z), and f(z)sigma_8(z) from the Sloan Digital Sky Survey DR7 Luminous Red Galaxies
- First evidence that non-metricity f(Q) gravity could challenge CDM
- Aspects of the cosmological "coincidence problem"
- Theoretical Models of Dark Energy
- Toward a Better Understanding of Cosmic Chronometers: A new measurement of H(z) at z~0.7
- Simultaneous constraints on the growth of structure and cosmic expansion from the multipole power spectra of the SDSS DR7 LRG sample
- The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: tomographic BAO analysis of DR12 combined sample in configuration space
- The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: single-probe measurements and the strong power of normalized growth rate on constraining dark energy
- Cosmology in gravity: A unified dynamical system analysis at background and perturbation levels
- Model-independent reconstruction of gravity from Gaussian Processes
- Polarization of gravitational waves in symmetric teleparallel theories of gravity and their modifications
- Propagation of gravitational waves in symmetric teleparallel gravity theories
- On the impact of gravity on the Large Scale Structure
- Towards an Optimal Reconstruction of Baryon Oscillations
- Cosmological constraints from HII starburst galaxy apparent magnitude and other cosmological measurements
- Parametric and nonparametric methods hint dark energy evolution
- Interacting Dark Energy: Possible Explanation for 21-cm Absorption at Cosmic Dawn
- On the dynamics of a quadratic scalar field potential
- Magnus Nernst and thermal Hall effect
- Data reconstruction of the dynamical connection function in cosmology
- Crossing phantom divide in gravity
- Cosmology in scalar-vector-tensor theories
- Is the Cosmological Coincidence a Problem?
- Inspiralling eccentric binary neutron stars: orbital motion and tidal resonance
- Gaussian Processes Reconstruction of the Dark Energy Potential
- Cosmological constraints on Hořava gravity revised in light of GW170817 and GRB170817A and the degeneracy with massive neutrinos
- Gaussian Process Approach for Model-Independent Reconstruction of Gravity with Direct Hubble Measurements
- Dynamical system analysis of scalar field cosmology in coincident gravity
- Quasinormal Modes for Dynamical Black Holes
- Hunting dark energy with pressure-dependent photon-photon scattering
- Reconstruction of the dark energy scalar field potential by Gaussian process