Review of Hubble tension solutions with new SH0ES and SPT-3G data ...

• Main Authors: Khalife, Ali Rida, Zanjani, Maryam Bahrami, Galli, Silvia, Günther, Sven, Lesgourgues, Julien, Benabed, Karim
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: arXiv 2023
• Subjects: Cosmology and Nongalactic Astrophysics astro-ph.CO; General Relativity and Quantum Cosmology gr-qc; FOS Physical sciences; Hubble; South Pole; South pole
• Online Access: https://dx.doi.org/10.48550/arxiv.2312.09814; https://arxiv.org/abs/2312.09814

We present an updated analysis of eleven cosmological models that may help reduce the Hubble tension, which now reaches the $6σ$ level when considering the latest SH0ES measurement versus recent CMB and BAO data, assuming $Λ$CDM. Specifically, we look at five classical extensions of $Λ$CDM (with massive neutrinos, spatial curvature, free-streaming or self-interacting relativistic relics, or dynamical dark energy) and six elaborate models featuring either a time-varying electron mass, early dark energy or some non-trivial interactions in the neutrino sector triggered by a light Majoron. We improve over previous works in several ways. We include the latest data from the South Pole Telescope as well as the most recent measurement of the Hubble rate by the SH0ES collaboration. We treat the summed neutrino mass as a free parameter in most of our models, which reveals interesting degeneracies and constraints. We define additional metrics to assess the potential of a model to reduce or even solve the Hubble ... : 51 pages, 15 figures ...