An E-value Reanalysis of DESI's Dynamical Dark Energy Signal

arXiv:2607.28918 · astro-ph.CO, stat.ME · Submitted 2026-07-31 · Read on arXiv

Two Sigma Investments · University of Oslo · Case Western Reserve University

astro-ph.CO, stat.ME

Submitted: 2026-07-31

Updated: 2026-10-22

Comments: 24 pages, 4 figures. Submitted to JCAP. Code: https://github.com/jinyoungkim927/desi-evalue-paper

Code: https://github.com/jinyoungkim927/desi-evalue-paper

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

Terminology

• Quintessence — 7× in this paper · explained in 2 episodes
• Calibration — 4× in this paper · explained in 7 episodes
• Clustering — 4× in this paper · explained in 2 episodes
• Robustness — 3× in this paper · explained in 5 episodes
• Fisher Information — 2× in this paper · explained in 3 episodes
• Verification — 2× in this paper · explained in 2 episodes
• Benchmark — 1× in this paper · explained in 2 episodes
• Dark Energy Spectroscopic Instrument — 1× in this paper
• Degeneracy — 1× in this paper · explained in 3 episodes
• Gravitational Lensing — 1× in this paper · explained in 2 episodes
• Weak Lensing — 1× in this paper · explained in 2 episodes
• alpha — 1× in this paper · explained in 1 episode

Sources

• Planck 2018 results. VI. Cosmological parameters
• The Atacama Cosmology Telescope: DR6 Power Spectra, Likelihoods and $\Lambda$CDM Parameters
• Cosmology with cosmic shear observations: a review
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in the Data Release 10 and 11 galaxy samples
• Cosmology Intertwined II: The Hubble Constant Tension
• To CPL, or not to CPL? What we have not learned about the dark energy equation of state
• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
• The Sigma-8 Tension is a Drag
• Status of the $S_8$ Tension: A 2026 Review of Probe Discrepancies
• DESI DR2 Results II: Measurements of Baryon Acoustic Oscillations and Cosmological Constraints
• Interpreting DESI's evidence for evolving dark energy
• Did DESI DR2 truly reveal dynamical dark energy?
• DESI and SNe: Dynamical Dark Energy, $\Omega_m$ Tension or Systematics?
• Evolving Dark Energy or Supernovae Systematics?
• Dynamic or Systematic? Bayesian model selection between dark energy and supernova biases
• Interpreting DESI 2024 BAO: late-time dynamical dark energy or a local effect?
• Dark Energy in the DESI Era: A Brief Review of Evidence, Beyond- CDM Interpretations, and Tensions
• The role of LRG1 and LRG2's monopole in inferring the DESI 2024 BAO cosmology
• A Bayesian Perspective on Evidence for Evolving Dark Energy
• Does DESI 2024 Confirm $\Lambda$CDM?

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