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arXiv · 2303.15523

Explaining the Hubble tension and dark energy from alpha-attractors

Lucy Brissenden·Konstantinos Dimopoulos·Samuel Sánchez López
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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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Lucy Brissenden, Konstantinos Dimopoulos, Samuel Sánchez López. 2023-03-27. Explaining the Hubble tension and dark energy from alpha-attractors. https://arxiv.org/abs/2303.15523

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