Hubble Tension: The Evidence of New Physics

By Jian-Ping Hu, Fa-yin Wang. Universe, 2023

214 citations recorded by the source corpus.

The ΛCDM model provides a good fit to most astronomical observations but harbors large areas of phenomenology and ignorance. With the improvements in the precision and number of observations, discrepancies between key cosmological parameters of this model have emerged. Among them, the most notable tension is the 4σ to 6σ deviation between the Hubble constant (H0) estimations measured by the local distance ladder and the cosmic microwave background (CMB) measurement. In this review, we revisit the H0 tension based on the latest research and sort out evidence from solutions to this tension that might imply new physics beyond the ΛCDM model. The evidence leans more towards modifying the late-time universe.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/d2bead8542cdb221e9c5bc51af72edc0494c4fdf

Citations in the corpus

• Dark Energy (2024, unknown): “But 𝜂 CDM solves two important problems which are present in Λ CDM: the problem of the Hubble tension [39] and the coincidence problem [40].”