Revisiting the Hubble tension with an inverse power-law early dark energy

arXiv:2608.26507 · astro-ph.CO, hep-th · Submitted 2026-08-27 · Read on arXiv

astro-ph.CO, hep-th

Submitted: 2026-08-27

Updated: 2026-09-04

Code: https://github.com/lesgourg/class_publichttps:

Terminology

• Hubble Tension — 7× in this paper · explained in 9 episodes
• Fine-Tuning — 3× in this paper · explained in 5 episodes
• Calibration — 1× in this paper · explained in 7 episodes
• Clustering — 1× in this paper · explained in 2 episodes
• Consistency — 1× in this paper · explained in 3 episodes
• Cosmic Microwave Background — 1× in this paper

Sources

• Planck 2018 results. VI. Cosmological parameters
• A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km/s/Mpc Uncertainty from the Hubble Space Telescope and the SH0ES Team
• Small Magellanic Cloud Cepheids Observed with the Hubble Space Telescope Provide a New Anchor for the SH0ES Distance Ladder
• The Ups and Downs of Early Dark Energy solutions to the Hubble tension: a review of models, hints and constraints circa 2023
• Early Dark Energy Can Resolve The Hubble Tension
• Oscillating scalar fields and the Hubble tension: a resolution with novel signatures
• Rock 'n' Roll Solutions to the Hubble Tension
• Unified framework for Early Dark Energy from $\alpha$-attractors
• New Early Dark Energy
• Resolving the Hubble Tension with New Early Dark Energy
• Hot New Early Dark Energy
• Hot New Early Dark Energy: Towards a Unified Dark Sector of Neutrinos, Dark Energy and Dark Matter
• Profiling Cold New Early Dark Energy
• Hot New Early Dark Energy bridging cosmic gaps: Supercooled phase transition reconciles (stepped) dark radiation solutions to the Hubble tension with BBN
• Hot New Early Dark Energy: Dark Radiation Matter Decoupling
• Double the axions, half the tension: multi-field early dark energy eases the Hubble tension
• Ultralight Scalar Decay and the Hubble Tension
• Towards Early Dark Energy in String Theory
• Constraints on Early Dark Energy from the Axion Weak Gravity Conjecture
• Cosmological implications of ultra-light axion-like fields

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