Erlangen 2026 – wissenschaftliches Programm

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GR: Fachverband Gravitation, Relativistische Astrophysik und Kosmologie

GR 4: Cosmology I

GR 4.2: Vortrag

Dienstag, 17. März 2026, 11:30–11:45, KH 01.016

The Hubble Tension: Overview, Recent Progress, and the Path Forward — •Nils Schöneberg — Ludwig-Maximilians-Universität, München, Deutschland

Cosmological observations from the early universe and the late universe have been disagreeing about the value of the Hubble constant for more than one decade now. With the nominal significance of this Hubble tension reaching 5σ, it has become one of the most pressing challenges in cosmology. Taken at face value it would signal a breakdown of the Λ + Cold Dark Matter cosmological standard model. Prior to invoking new physics, it is paramount to re-investigate our astrophysical assumptions and to obtain independent confirmations. In this talk I present recent results in the search for the possible causes of the Hubble tension in early- and late-Universe data, including a joint effort from the H₀DN collaboration of constraining the Hubble constant using local astrophysical probes. I give a critical assessment of possible issues and solutions, and highlight future efforts that will be crucial in clarifying this challenge.

Keywords: Hubble Tension; Cosmological Parameters; Standard Candles; Cosmic Microwave Background; Distance Ladder