Explaining the Hubble tension and dark energy from -attractors

Dimopoulos, Konstantinos and Sanchez Lopez, Samuel and Brissenden, Lucy (2023) Explaining the Hubble tension and dark energy from -attractors. In: Corfu Summer Institute 2022, 2022-09-07 - 2022-10-10, Corfu.

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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.