Deus ex H 0 -- Is evidence for dynamical dark energy conditioned on early cosmology?

arXiv:2608.07654 · astro-ph.CO · Submitted 2026-08-07 · Read on arXiv

Nils Schöneberg, Rodrigo Calderón, Julien Lesgourgues

astro-ph.CO

Submitted: 2026-08-07

Updated: 2026-08-11

Comments: 6 pages, 6 figures

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

Terminology

• Hubble Tension — 11× in this paper · explained in 9 episodes
• ACT Data — 1× in this paper · explained in 1 episode
• Calibration — 1× in this paper · explained in 7 episodes
• Decoupling — 1× in this paper · explained in 2 episodes
• Degeneracy — 1× in this paper · explained in 3 episodes

Sources

• Extended Dark Energy analysis using DESI DR2 BAO measurements
• DESI 2024: Reconstructing Dark Energy using Crossing Statistics with DESI DR1 BAO data
• Dynamical Dark Energy in light of the DESI DR2 Baryonic Acoustic Oscillations Measurements
• Constraints on neutrino mass and dark energy agnostic to the sound horizon
• Model-Independent Indication for a Localized Anomaly in the Late-Time Expansion History
• DESI and the Hubble tension in light of modified recombination
• Is Dynamical Dark Energy Necessary? DESI BAO and Modified Recombination
• Early time solution as an alternative to the late time evolving dark energy with DESI DR2 BAO
• SPT-3G D1: Axion Early Dark Energy with CMB experiments and DESI
• Disentangling cosmic distance tensions with early and late dark energy
• The H 0 world cup. II. A comprehensive competition between proposed Hubble tension solutions
• The BAO scale -- how standard is the standard ruler?
• DESI DR2 Results II: Measurements of Baryon Acoustic Oscillations and Cosmological Constraints
• Phantom-Crossing Dark Energy and the m Tug-of-War
• The $H_0$ Olympics: A fair ranking of proposed models
• Review of Hubble tension solutions with new SH0ES and SPT-3G data
• On the implications of the `cosmic calibration tension' beyond $H_0$ and the synergy between early- and late-time new physics
• Accelerating Universes with Scaling Dark Matter
• Exploring the Expansion History of the Universe
• 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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