Explaining the Hubble tension and dark energy from alpha-attractors

2023/03/27 by Lucy Brissenden, Konstantinos Dimopoulos, Brissenden, Lucy +3
Mathematics · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Astrophysics #Attractor #Classical mechanics #Context (archaeology) #Cosmology #Cosmology and Gravitation Theories #Dark energy #Dark matter #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #Hubble's law #Mathematics #Physics #Scalar field #Scientific Research and Discoveries

paper · pdf · doi:10.48550/arxiv.2303.15523

openalex publication_date 2023/03/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

A compelling unified model of dark energy and early dark energy (EDE) is presented, using a scalar field with an exponential runaway potential, in the context of alpha-attractors. The field is originally trapped at an enhanced symmetry point, subsequently thaws to become successful EDE and eventually slow-rolls to become dark energy. EDE ameliorates the observed Hubble tension.

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