Sound-Horizon-Independent Test of Cosmic Distance Duality Relation Using Artificial Neural Networks and Gaussian Processes

arXiv:2609.24203 · astro-ph.CO, astro-ph.IM · Submitted 2026-09-21 · Read on arXiv

astro-ph.CO, astro-ph.IM

Submitted: 2026-09-21

Updated: 2026-09-21

Comments: 11 pages,6 figures, 3 tables

Code: https://github.com/PantheonPlusSH0ES/DataRelease

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

Terminology

• Calibration — 21× in this paper · explained in 7 episodes
• Consistency — 10× in this paper · explained in 3 episodes
• Sparsity — 6× in this paper · explained in 4 episodes
• Baryon Acoustic Oscillations — 4× in this paper
• Degeneracy — 4× in this paper · explained in 3 episodes
• Hubble Tension — 3× in this paper · explained in 9 episodes
• Clustering — 2× in this paper · explained in 2 episodes
• Sloan Digital Sky Survey — 2× in this paper
• Activation Function — 1× in this paper · explained in 1 episode
• Adam — 1× in this paper · explained in 2 episodes
• Bayesian Framework — 1× in this paper · explained in 3 episodes
• Bispectrum — 1× in this paper · explained in 3 episodes
• Core — 1× in this paper · explained in 2 episodes
• Ensemble Approach — 1× in this paper · explained in 3 episodes
• Nonminimal coupling — 1× in this paper · explained in 2 episodes
• Population Synthesis — 1× in this paper · explained in 2 episodes
• Regularization — 1× in this paper · explained in 3 episodes

Sources

• The distance duality relation from X-ray and SZ observations of clusters
• Etherington's Distance Duality with Birefringence
• Distance-duality in theories with a nonminimal coupling to gravity
• Current constraints on the minimally extended varying speed of light model through the cosmic distance duality relation
• Null tests with Gaussian Process
• Probing the Cosmic Distance Duality Relation via Non-Parametric Reconstruction for High Redshifts
• Testing the Cosmic Distance Duality Relation with Neural Kernel Gaussian Process Regression
• Testing the cosmic distance duality relation using Type Ia supernovae and BAO observations
• Testing the cosmic distance duality relation with baryon acoustic oscillations and supernovae data
• Testing the Distance Duality Relation with Cosmological Observations at high Redshift using Artificial Neural Network
• The impact of 2D and 3D BAO measurements on the Cosmic Distance Duality Relation with HII galaxies
• Testing the Cosmic Distance Duality Relation Using Strong Gravitational Lensing Time Delays and Type Ia Supernovae
• Revisiting Cosmic Distance Duality with Megamasers and DESI DR2 Observations: Model Independent Constraints on Early-Late Calibration
• A model-independent test of the cosmic distance-duality relation using galaxy clusters and Type Ia supernovae matched pairs
• Can Distance Duality Violation Save Late-time Solutions to the Hubble Tension?
• The Pantheon+ Analysis: Cosmological Constraints
• The Dark Energy Survey: Cosmology Results With ~1500 New High-redshift Type Ia Supernovae Using The Full 5-year Dataset
• Union Through UNITY: Cosmology with 2,000 SNe Using a Unified Bayesian Framework
• The Dark Energy Survey Supernova Program: A Reanalysis Of Cosmology Results And Evidence For Evolving Dark Energy With An Updated Type Ia Supernova Calibration
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: RSD measurement from the power spectrum and bispectrum of the DR12 BOSS galaxies

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