Intertwined Constraints in Extended Cosmologies: Dark Energy, Curvature, Neutrinos, and Inflation

arXiv:2607.01226 · astro-ph.CO · Submitted 2026-07-01 · Read on arXiv

William Giarè, Dong Ha Lee, Eleonora Di Valentino

astro-ph.CO

Submitted: 2026-07-01

Comments: 103 pages, 30 figures, 26 tables, including supplementary material. A systematic assessment of current cosmological constraints in extended parameter spaces. Invited article for New Astronomy Reviews

DOI: 10.1016/j.newar.2026.101759

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

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

Terminology

• Dark Energy — 94× in this paper
• Consistency — 33× in this paper · explained in 3 episodes
• Hubble Tension — 26× in this paper · explained in 9 episodes
• Calibration — 13× in this paper · explained in 7 episodes
• Degeneracy — 13× in this paper · explained in 3 episodes
• Clustering — 10× in this paper · explained in 2 episodes
• Quintessence — 9× in this paper · explained in 2 episodes
• Cosmic Microwave Background — 7× in this paper
• Benchmark — 6× in this paper · explained in 2 episodes
• Robustness — 6× in this paper · explained in 5 episodes
• Anisotropy — 5× in this paper · explained in 3 episodes
• Decoupling — 5× in this paper · explained in 2 episodes
• Reheating — 4× in this paper · explained in 2 episodes
• Standard Model — 4× in this paper
• Weak Lensing — 4× in this paper · explained in 2 episodes
• Abundance — 3× in this paper · explained in 1 episode
• Figure of Merit — 3× in this paper
• General Relativity — 3× in this paper
• alpha — 3× in this paper · explained in 1 episode
• Core — 2× in this paper · explained in 2 episodes
• Gravitational Lensing — 2× in this paper · explained in 2 episodes
• Nine-Year Wilkinson Microwave Anisotropy Probe — 2× in this paper
• ACT Data — 1× in this paper · explained in 1 episode
• Accuracy — 1× in this paper · explained in 1 episode
• Alignment — 1× in this paper · explained in 1 episode
• Bayesian Inference — 1× in this paper · explained in 5 episodes
• Bispectrum — 1× in this paper · explained in 3 episodes
• Cooperation — 1× in this paper · explained in 2 episodes
• Dark Energy Spectroscopic Instrument — 1× in this paper
• Higher-order derivatives — 1× in this paper · explained in 2 episodes
• Homogeneity — 1× in this paper · explained in 2 episodes
• Markov Chain Monte Carlo — 1× in this paper
• Non-Gaussianity — 1× in this paper · explained in 2 episodes
• Symmetry Breaking — 1× in this paper · explained in 3 episodes
• Unified Framework — 1× in this paper · explained in 5 episodes
• Universality Class — 1× in this paper · explained in 2 episodes

Sources

• Primordial Nucleosynthesis in the Precision Cosmology Era
• Primordial Nucleosynthesis: from precision cosmology to fundamental physics
• Big Bang Nucleosynthesis: 2015
• One percent determination of the primordial deuterium abundance
• Big-Bang Nucleosynthesis After Planck
• 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
• The 6dF Galaxy Survey: Final Redshift Release (DR3) and Southern Large-Scale Structures
• The 6dF Galaxy Survey: Baryon Acoustic Oscillations and the Local Hubble Constant
• The 6dF Galaxy Survey: z \approx 0 measurement of the growth rate and sigma_8
• The WiggleZ Dark Energy Survey: Joint measurements of the expansion and growth history at z < 1
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in the Data Release 10 and 11 galaxy samples
• Baryon Acoustic Oscillations in the Ly-\alpha\ forest of BOSS quasars

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