When, Why, and How CMB Compression Fails

arXiv:2610.08728 · astro-ph.CO · Submitted 2026-10-06 · Read on arXiv

astro-ph.CO

Submitted: 2026-10-06

Updated: 2026-10-06

Comments: 21 pages, 10 figures. 1 appendix with 3 figures

Code: https://github.com/williamgiare/wgcosmo

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

Terminology

• Abundance — 45× in this paper · explained in 1 episode
• Degeneracy — 16× in this paper · explained in 3 episodes
• Decoupling — 5× in this paper · explained in 2 episodes
• Robustness — 5× in this paper · explained in 5 episodes
• Momentum transfer — 4× in this paper · explained in 2 episodes
• Benchmark — 2× in this paper · explained in 2 episodes
• Calibration — 2× in this paper · explained in 7 episodes
• Clustering — 2× in this paper · explained in 2 episodes
• Hubble Tension — 2× in this paper · explained in 9 episodes
• Quintessence — 2× in this paper · explained in 2 episodes
• Trace — 2× in this paper · explained in 2 episodes
• Accuracy — 1× in this paper · explained in 1 episode
• Consistency — 1× in this paper · explained in 3 episodes
• Cooperation — 1× in this paper · explained in 2 episodes
• DR2 Baryon Acoustic Oscillation — 1× in this paper
• Dark Energy Spectroscopic Instrument — 1× in this paper
• Diagnostic Tools — 1× in this paper · explained in 2 episodes
• Equation of State (EoS) — 1× in this paper · explained in 4 episodes
• Matter Power Spectrum — 1× in this paper · explained in 2 episodes
• South Pole Telescope — 1× in this paper

Sources

• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Final Maps and Results
• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results
• Planck 2018 results. I. Overview and the cosmological legacy of Planck
• Planck 2018 results. VI. Cosmological parameters
• The Atacama Cosmology Telescope: A Measurement of the DR6 CMB Lensing Power Spectrum and its Implications for Structure Growth
• The Atacama Cosmology Telescope: DR6 Gravitational Lensing Map and Cosmological Parameters
• The Atacama Cosmology Telescope: DR6 Power Spectra, Likelihoods and $\Lambda$CDM Parameters
• Cosmology From CMB Lensing and Delensed EE Power Spectra Using 2019-2020 SPT-3G Polarization Data
• SPT-3G D1: CMB temperature and polarization power spectra and cosmology from 2019 and 2020 observations of the SPT-3G Main field
• Tensions between the Early and the Late Universe
• Cosmology Intertwined II: The Hubble Constant Tension
• In the Realm of the Hubble tension $-$ a Review of Solutions
• Challenges for $\Lambda$CDM: An update
• The $H_0$ Olympics: A fair ranking of proposed models
• A buyer's guide to the Hubble Constant
• Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies
• The Hubble Tension and Early Dark Energy
• CMB Anomalies and the Hubble Tension
• Hubble Tension: The Evidence of New Physics
• A tale of many $H_0$

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