Derivative hierarchy as the origin of kernel-dependent trends in Gaussian process reconstructions of the hubble parameter

arXiv:2608.26774 · astro-ph.CO · Submitted 2026-08-27 · Read on arXiv

astro-ph.CO

Submitted: 2026-08-27

Updated: 2026-08-27

Comments: Published in Physics Letters B

Journal ref: Physics Letters B 877 (2026) 140456

DOI: 10.1016/j.physletb.2026.140456

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Gaussian Process — 21× in this paper
• Squared Exponential — 18× in this paper
• Robustness — 4× in this paper · explained in 5 episodes
• Clustering — 3× in this paper · explained in 2 episodes
• Hubble Tension — 3× in this paper · explained in 9 episodes
• Degeneracy — 2× in this paper · explained in 3 episodes
• Population Synthesis — 2× in this paper · explained in 2 episodes
• Anti-correlation — 1× in this paper · explained in 3 episodes
• Bayesian Framework — 1× in this paper · explained in 3 episodes
• Calibration — 1× in this paper · explained in 7 episodes
• Consistency — 1× in this paper · explained in 3 episodes
• Fidelity — 1× in this paper · explained in 2 episodes
• Gaussian Processes (GPs) — 1× in this paper · explained in 2 episodes
• alpha — 1× in this paper · explained in 1 episode

Sources

• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Planck 2013 results. XVI. Cosmological parameters
• Planck 2018 results. VI. Cosmological parameters
• DESI DR2 Results II: Measurements of Baryon Acoustic Oscillations and Cosmological Constraints
• The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: measurement of the growth rate of structure from the anisotropic correlation function between redshift 0.8 and 2.2
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
• Baryon acoustic oscillations from the complete SDSS-III Ly$\alpha$-quasar cross-correlation function at $z=2.4$
• DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations
• DESI 2024 III: Baryon Acoustic Oscillations from Galaxies and Quasars
• DESI 2024 IV: Baryon Acoustic Oscillations from the Lyman Alpha Forest
• DESI 2024: Reconstructing Dark Energy using Crossing Statistics with DESI DR1 BAO data
• 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
• Cosmic Chronometers: Constraining the Equation of State of Dark Energy. I: H(z) Measurements
• Improved constraints on the expansion rate of the Universe up to z~1.1 from the spectroscopic evolution of cosmic chronometers
• Nonparametric Dark Energy Reconstruction from Supernova Data
• Nonparametric Reconstruction of the Dark Energy Equation of State
• Nonparametric Reconstruction of the Dark Energy Equation of State from Diverse Data Sets
• The Value of $H_0$ from Gaussian Processes
• Evidence for a Lower Value for $H_0$ from Cosmic Chronometers Data?

Related papers

• Angular clustering and bias of photometric quasars in the Kilo-Degree Survey Data Release 4
• A Novel kinetic Sunyaev-Zel'dovich Estimator for Electron-Electron Correlations
• Magnetic fields at the dawn of structure formation I. The CARLA J1510+5958 proto-cluster
• Dark Energy Survey Year 6 Results: Weak Lensing and Galaxy Clustering Cosmological Analysis Framework
• Exploring the Impact of Systematic Bias in Type Ia Supernova Cosmology Across Diverse Dark Energy Parametrizations
• Non-Gaussian Galaxy Stochasticity and the Noise-Field Formulation