Model-independent reconstruction of gravity from Gaussian Processes
arXiv:1907.10813 · doi:10.3847/1538-4357/ab5a7f
Abstract
We apply Gaussian processes and Hubble function data in cosmology, to reconstruct for the first time the form in a model-independent way. In particular, using datasets coming from cosmic chronometers as well as from the radial BAO method, alongside the latest released local value km/s/Mpc, we reconstruct and its derivatives, resulting eventually in a reconstructed region for , without any assumption. Although the cosmological constant lies in the central part of the reconstructed region, the obtained mean curve follows a quadratic function. Inspired by this we propose a new parametrization, i.e. , with the sole free parameter that quantifies the deviation from CDM cosmology. Additionally, we confront three viable one-parameter models of the literature, which respectively are the power-law, the square-root exponential, and the exponential one, with the reconstructed region, and then we extract significantly improved constraints for their model parameters, comparing to the constraints that arise from usual observational analysis. Finally, we argue that since we are using the direct Hubble measurements and the local value for in our analysis, with the above reconstruction of , the tension can be efficiently alleviated.
10 pages, 4 figures, 1 table; comments are welcome
References in corpus (28)
- Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
- Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
- Dark torsion as the cosmic speed-up
- Einstein's Other Gravity and the Acceleration of the Universe
- The Carnegie-Chicago Hubble Program. VIII. An Independent Determination of the Hubble Constant Based on the Tip of the Red Giant Branch
- The teleparallel equivalent of general relativity
- Cosmological perturbations in f(T) gravity
- Extended Gravity Cosmography
- Observational constraints on theory
- f(T) gravity mimicking dynamical dark energy. Background and perturbation analysis
- Teleparallel equivalent of Gauss-Bonnet gravity and its modifications
- Gaussian Process Cosmography
- Solar system constraints on f(T) gravity
- Nonparametric Dark Energy Reconstruction from Supernova Data
- A Simple Phenomenological Emergent Dark Energy Model can Resolve the Hubble Tension
- Cosmological applications of gravity
- New classes of modified teleparallel gravity models
- Reconstructing the interaction between dark energy and dark matter using Gaussian Processes
- Bayesian analysis of gravity using data
- Photon sphere and perihelion shift in weak gravity
- Stability of the flat FLRW metric in gravity
- Model-independent reconstruction of teleparallel cosmology
- New observational constraints on cosmology from radio quasars
- Viability of the matter bounce scenario in Loop Quantum Cosmology for general potentials
- FRW in quadratic form of gravitational theories
- Improved constraints on the dark energy equation of state using Gaussian processes
- Geodesic Deviation Equation in gravity
- Spherical collapse model and cluster number counts in power law gravity
Cited by in corpus (81)
- In the Realm of the Hubble tension a Review of Solutions
- Challenges for CDM: An update
- Cosmology Intertwined II: The Hubble Constant Tension
- New physics in light of the tension: an alternative view
- Non-minimal dark sector physics and cosmological tensions
- Seven hints that early-time new physics alone is not sufficient to solve the Hubble tension
- Interacting dark energy in the early 2020s: a promising solution to the and cosmic shear tensions
- The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
- Consistency tests of CDM from the early integrated Sachs-Wolfe effect: Implications for early-time new physics and the Hubble tension
- The galaxy power spectrum take on spatial curvature and cosmic concordance
- Nonparametric late-time expansion history reconstruction and implications for the Hubble tension in light of recent DESI and type Ia supernovae data
- Interpreting cosmological tensions from the effective field theory of torsional gravity
- Dynamical dark energy after Planck CMB final release and tension
- Finite-time Cosmological Singularities and the Possible Fate of the Universe
- Quintom cosmology and modified gravity after DESI 2024
- Reconciling tension in a six parameter space?
- Measurements of in modified gravity theories: The role of lensed quasars in the late-time Universe
- Dynamical Stability Analysis of Accelerating f(T) Gravity Models
- Stability of motion and thermodynamics in charged black holes in gravity
- Gaussian processes and effective field theory of gravity under the tension
- Data-driven Reconstruction of the Late-time Cosmic Acceleration with f(T) Gravity
- Parametric and nonparametric methods hint dark energy evolution
- Quasinormal modes of black holes in f(T) gravity
- Constraining Teleparallel Gravity through Gaussian Processes
- Non-parametric reconstruction of the cosmological \textit{jerk} parameter
- An analysis of the tension problem in a universe with a viscous dark fluid
- Dynamical systems analysis in gravity
- Reconstructing teleparallel gravity with cosmic structure growth and expansion rate data
- Model-independent measurement of cosmic curvature with the latest and SNe Ia data: A comprehensive investigation
- Data reconstruction of the dynamical connection function in cosmology
- Modified gravity realizations of quintom dark energy after DESI DR2
- Gravitational-Wave Detector Networks: Standard Sirens on Cosmology and Modified Gravity Theory
- Towards a model-independent reconstruction approach for late-time Hubble data
- Metastable dark energy models in light of Planck 2018: Alleviating the tension
- The effective field theory approach to the strong coupling issue in gravity
- Deflection angle and lensing signature of covariant f(T) gravity
- A data-driven Reconstruction of Horndeski gravity via the Gaussian processes
- Revisiting a non-parametric reconstruction of the deceleration parameter from combined background and the growth rate data
- New test on general relativity and torsional gravity from galaxy-galaxy weak lensing surveys
- Touch of Neutrinos on the Vacuum Metamorphosis: is the Solution Back?
- Can small-scale baryon inhomogeneities resolve the Hubble tension? An investigation with ACT DR4
- Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies
- Model-independent constraints on and from the link between geometry and growth
- Constraining the curvature density parameter in cosmology
- Observational Constraints on Gravity from Model-Independent Data
- Dark energy by natural evolution: Constraining dark energy using Approximate Bayesian Computation
- Neural Network Reconstruction of and its application in Teleparallel Gravity
- Dynamical Dark Energy Implies a Coupled Dark Sector: Insights from DESI DR2 via a Data-Driven Approach
- Realistic neutron star models in gravity
- New cosmological constraints on gravity in light of full Planck-CMB and type Ia supernovae data
- Alleviating Tension with New Gravitational Scalar Tensor Theories
- Gaussian Process Approach for Model-Independent Reconstruction of Gravity with Direct Hubble Measurements
- Cosmological model-independent measurement of cosmic curvature using distance sum rule with the help of gravitational waves
- Alleviating tension in Horndeski gravity
- Solving the tension in Gravity through Bayesian Machine Learning
- Null test for cosmic curvature using Gaussian process
- Spontaneous Scalarization of Black Holes in Gauss-Bonnet Teleparallel Gravity
- Reconstructing the Fraction of Baryons in the Intergalactic Medium with Fast Radio Bursts via Gaussian Processes
- Neural network reconstruction of cosmology using the Pantheon compilation
- Cosmic evolution in f(T) gravity theory
- Accelerating Cosmological Models in Gravitational Theory
- f(T) cosmology against the cosmographic method: A new study using mock and observational data
- Growth of structures using redshift space distortion in Cosmology
- Cosmological implications of the Weyl geometric gravity theory
- The impact of the Universe's expansion rate on constraints on modified growth of structure
- cosmology in the regime of quasar observations
- Search for the gravity functional form via gaussian processes
- A possible late-time transition of inferred via neural networks
- The Gauss-Bonnet topological scalar in the Geometric Trinity of Gravity
- N-body simulations, halo mass functions, and halo density profile in gravity
- Reconstructing modified gravity from ECHDE and ECNADE models
- Cosmological singularities in gravity
- Inhomogeneous solutions in gravity
- Testing Gravity with Cosmological Observations: Confronting the Hubble Tension and Implications for the Late-Time Universe
- Interplay between Swampland and Bayesian Machine Learning in constraining cosmological models
- Special Issue on Modified Gravity Approaches to the Tensions of CDM: Goals and Highlights
- Background-dependent and classical correspondences between and gravity
- Reconstruction of the scalar field potential in nonmetricity gravity through Gaussian processes
- Performance of Non-Parametric Reconstruction Techniques in the Late-Time Universe
- Measuring the gravitomagnetic distortion from rotating halos I: methods
- White Dwarf Envelops and Temperature Corrections in Exponential Gravity