Lyman-Alpha Forest and its Cross-Correlation with High-Redshift Galaxies in Effective Field Theory at the Field Level

arXiv:2606.26234 · astro-ph.CO, astro-ph.GA, hep-th · Submitted 2026-06-24 · Read on arXiv

Roger de Belsunce, Mikhail M. Ivanov, James M. Sullivan, Shi-Fan Chen, Kazuyuki Akitsu

astro-ph.CO, astro-ph.GA, hep-th

Submitted: 2026-06-24

Comments: 50 pages, 34 figures, comments welcome

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

Terminology

• Clustering — 36× in this paper · explained in 2 episodes
• alpha — 25× in this paper · explained in 1 episode
• Bispectrum — 8× in this paper · explained in 3 episodes
• Accuracy — 4× in this paper · explained in 1 episode
• Effective Field Theory (EFT) — 4× in this paper · explained in 2 episodes
• Forward modeling — 4× in this paper · explained in 2 episodes
• Alignment — 3× in this paper · explained in 1 episode
• Degeneracy — 3× in this paper · explained in 3 episodes
• Fidelity — 3× in this paper · explained in 2 episodes
• Robustness — 3× in this paper · explained in 5 episodes
• Dark Energy Spectroscopic Instrument — 2× in this paper
• Generalization — 2× in this paper · explained in 13 episodes
• Matter Power Spectrum — 2× in this paper · explained in 2 episodes
• N-body simulations — 2× in this paper · explained in 2 episodes
• Non-Gaussianity — 2× in this paper · explained in 2 episodes
• Baryonic Feedback — 1× in this paper · explained in 3 episodes
• Calibration — 1× in this paper · explained in 7 episodes
• Consistency — 1× in this paper · explained in 3 episodes
• Decoupling — 1× in this paper · explained in 2 episodes
• Gravitational Lensing — 1× in this paper · explained in 2 episodes
• Hybrid Approach — 1× in this paper · explained in 4 episodes
• Primordial non-Gaussianity — 1× in this paper · explained in 2 episodes
• Society of Photo-Optical Instrumentation Engineers — 1× in this paper
• Trace — 1× in this paper · explained in 2 episodes
• Weak Lensing — 1× in this paper · explained in 2 episodes

Sources

• The Third Data Release of the KODIAQ Survey
• Unveiling Dark Matter free-streaming at the smallest scales with high redshift Lyman-alpha forest
• The UVES Spectral Quasar Absorption Database (SQUAD) Data Release 1: The first 10 million seconds
• The one-dimensional Ly-alpha forest power spectrum from BOSS
• The one-dimensional power spectrum from the SDSS DR14 Ly$\alpha$ forests
• An emulator for the Lyman-$\alpha$ forest in beyond-$\Lambda$CDM cosmologies
• The Dark Energy Spectroscopic Instrument: One-dimensional power spectrum from first Lyman-$\alpha$ forest samples with Fast Fourier Transform
• Optimal 1D Ly$\alpha$ Forest Power Spectrum Estimation -- III. DESI early data
• The effect of neutrinos on the matter distribution as probed by the Intergalactic Medium
• Hints, neutrino bounds and WDM constraints from SDSS DR14 Lyman-$\alpha$ and Planck full-survey data
• Fundamental physics with the Lyman-alpha forest: constraints on the growth of structure and neutrino masses from SDSS with effective field theory
• Lyman-$\alpha$ forest constraints on Primordial Black Holes as Dark Matter
• Warm Dark Matter as a solution to the small scale crisis: new constraints from high redshift Lyman-alpha forest data
• Lyman-alpha Forests cool Warm Dark Matter
• New Constraints on the free-streaming of warm dark matter from intermediate and small scale Lyman-$\alpha$ forest data
• Lyman-alpha Constraints on Ultralight Scalar Dark Matter: Implications for the Early and Late Universe
• Constraining the mass of light bosonic dark matter using SDSS Lyman-$\alpha$ forest
• Novel constraints on non-cold (non-thermal) Dark Matter from Lyman-$\alpha$ forest data
• The Lyman-$\alpha$ forest as a diagnostic of the nature of the dark matter
• Early Structure Formation Constraints on the Ultra-Light Axion in the Post-Inflation Scenario

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