Das Kolloquium der Fachgruppe Physik startet am 17. Oktober 2022 mit einer neuen Reihe spannender Vorträge ins Wintersemester 2022/23. 
Es findet montags um 17:00 Uhr in Hörsaal 4 statt. Alle sind herzlich willkommen!

17. Oktober 2022

Vortragender: Prof. Julien Lesgourgues, Rheinisch-Westfälische Technische Hochschule Aachen (RWTH)

Titel: The Hubble Tension as a Hint of New Physics

Abstract: Cosmologists are puzzled by a tension between the results of two categories of observations, which has been growing over the past few years. This “Hubble tension” arises from contradictory indications concerning the current expansion rate of the universe. 
I will try to give a pedagogical overview of this problem, with a summary of the physical assumptions that go into the interpretation of each observation. Then, assuming that the tension persists with future data releases, I will give examples of the kind of new fundamental physics that could help solving it.