Giovedì 2 Marzo 2023 alle ore 15.00 presso l'Aula Maxwell del Plesso di Fisica, il prof. Julien Lesgourgues della RWTH Aachen University, terrà il Seminario:Hubble tension and possible theoretical solutionsAbstract: 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.
