Alleviating the Hubble Tension with Smooth Sign-Switching Dark Energy: Full CMB Constraints with DESI and PantheonPlus

arXiv:2607.05044 · astro-ph.CO, gr-qc, hep-ph, hep-th · Submitted 2026-07-06 · Read on arXiv

Mariam Bouhmadi-López, Hsu-Wen Chiang, Beñat Ibarra-Uriondo

astro-ph.CO, gr-qc, hep-ph, hep-th

Submitted: 2026-07-06

Comments: 46 pages, 11 figures, 4 tables

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

Terminology

• Calibration — 17× in this paper · explained in 7 episodes
• Hubble Tension — 14× in this paper · explained in 9 episodes
• Baryon Acoustic Oscillations — 11× in this paper
• Matter Power Spectrum — 11× in this paper · explained in 2 episodes
• Clustering — 10× in this paper · explained in 2 episodes
• Consistency — 8× in this paper · explained in 3 episodes
• Quintessence — 5× in this paper · explained in 2 episodes
• Anisotropy — 3× in this paper · explained in 3 episodes
• Cosmic Microwave Background — 3× in this paper
• Degeneracy — 3× in this paper · explained in 3 episodes
• Gravitational Lensing — 3× in this paper · explained in 2 episodes
• Trace — 3× in this paper · explained in 2 episodes
• Weak Lensing — 3× in this paper · explained in 2 episodes
• Bayesian Information Criterion — 2× in this paper
• alpha — 2× in this paper · explained in 1 episode
• ACT Data — 1× in this paper · explained in 1 episode
• Abundance — 1× in this paper · explained in 1 episode
• Bispectrum — 1× in this paper · explained in 3 episodes
• Boltzmann Equation — 1× in this paper · explained in 2 episodes
• Cooperation — 1× in this paper · explained in 2 episodes
• Dark Energy Spectroscopic Instrument — 1× in this paper
• Fine-Tuning — 1× in this paper · explained in 5 episodes
• General Relativity — 1× in this paper
• Generalization — 1× in this paper · explained in 13 episodes
• Homogeneity — 1× in this paper · explained in 2 episodes
• Model-Agnostic — 1× in this paper · explained in 2 episodes
• Monte-Carlo Markov Chain — 1× in this paper
• N-body simulations — 1× in this paper · explained in 2 episodes
• Reheating — 1× in this paper · explained in 2 episodes
• Robustness — 1× in this paper · explained in 5 episodes
• World Model — 1× in this paper · explained in 7 episodes

Sources

• Planck 2018 results. VI. Cosmological parameters
• The Atacama Cosmology Telescope: DR6 Power Spectra, Likelihoods and $\Lambda$CDM Parameters
• SPT-3G D1: CMB temperature and polarization power spectra and cosmology from 2019 and 2020 observations of the SPT-3G Main field
• SPT-3G D1: Axion Early Dark Energy with CMB experiments and DESI
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Cosmological Implications from two Decades of Spectroscopic Surveys at the Apache Point observatory
• The Pantheon+ Analysis: The Full Dataset and Light-Curve Release
• The Pantheon+ Analysis: Cosmological Constraints
• Union Through UNITY: Cosmology with 2,000 SNe Using a Unified Bayesian Framework
• DESI 2024: Reconstructing Dark Energy using Crossing Statistics with DESI DR1 BAO data
• DESI 2024 V: Full-Shape Galaxy Clustering from Galaxies and Quasars
• Full Modeling and Parameter Compression Methods in configuration space for DESI 2024 and beyond
• DESI 2024 IV: Baryon Acoustic Oscillations from the Lyman Alpha Forest
• DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations
• DESI 2024 III: Baryon Acoustic Oscillations from Galaxies and Quasars
• Constraints on Neutrino Physics from DESI DR2 BAO and DR1 Full Shape
• Extended Dark Energy analysis using DESI DR2 BAO measurements
• DESI DR2 Results II: Measurements of Baryon Acoustic Oscillations and Cosmological Constraints
• Updated Cosmological Constraints from 2D BAO Measurements: A New Compilation and Comparison with DESI DR2
• The Local Distance Network: a community consensus report on the measurement of the Hubble constant at 1% precision
• Status Report on the Chicago-Carnegie Hubble Program (CCHP): Measurement of the Hubble Constant Using the Hubble and James Webb Space Telescopes

Related papers

• Angular clustering and bias of photometric quasars in the Kilo-Degree Survey Data Release 4
• A Novel kinetic Sunyaev-Zel'dovich Estimator for Electron-Electron Correlations
• Magnetic fields at the dawn of structure formation I. The CARLA J1510+5958 proto-cluster
• Dark Energy Survey Year 6 Results: Weak Lensing and Galaxy Clustering Cosmological Analysis Framework
• Exploring the Impact of Systematic Bias in Type Ia Supernova Cosmology Across Diverse Dark Energy Parametrizations
• Non-Gaussian Galaxy Stochasticity and the Noise-Field Formulation