Sensitivity of calibration-free DESI DR2 BAO--supernova constraints to a distance-duality tilt

arXiv:2610.16496 · astro-ph.CO, gr-qc, hep-ph, hep-th · Submitted 2026-10-12 · Read on arXiv

astro-ph.CO, gr-qc, hep-ph, hep-th

Submitted: 2026-10-12

Updated: 2026-10-20

Comments: 15 pages, 5 figures. The numerical analysis files for the production of the results and figures can be found in the following GitHub repository: https://github.com/Rivillion/Sensitivity_test_distance_duality

Code: https://github.com/Rivillion/Sensitivity_test_distance_duality

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

Terminology

• Calibration — 1× in this paper · explained in 9 episodes

Sources

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• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• Planck 2018 results. VI. Cosmological parameters
• 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
• SPT-3G D1: CMB temperature and polarization power spectra and cosmology from 2019 and 2020 observations of the SPT-3G Main field
• The Local Distance Network: a community consensus report on the measurement of the Hubble constant at 1% precision
• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
• Seven hints that early-time new physics alone is not sufficient to solve the Hubble tension
• On the implications of the `cosmic calibration tension' beyond $H_0$ and the synergy between early- and late-time new physics
• DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations
• DESI DR2 Results II: Measurements of Baryon Acoustic Oscillations and Cosmological Constraints
• The Pantheon+ Analysis: The Full Dataset and Light-Curve Release
• The Pantheon+ Analysis: Cosmological Constraints
• Union Through UNITY: Cosmology with 2,000 SNe Using a Unified Bayesian Framework
• The Dark Energy Survey: Cosmology Results With ~1500 New High-redshift Type Ia Supernovae Using The Full 5-year Dataset
• The Dark Energy Survey Supernova Program: A Reanalysis Of Cosmology Results And Evidence For Evolving Dark Energy With An Updated Type Ia Supernova Calibration

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