Speaker
Nikita Nedelko
(INR RAS)
Description
The Hubble Crisis -- a large disagreement between different direct and indirect measurements of the present-day rate of the expansion of the Universe $H_0$ -- remains one of the most significant issues in the $\Lambda CDM$ paradigm despite continuing advances in observational techniques. The talk presents the problems plaguing common $\Lambda CDM$ extentions, with the phantom-crossing dark energy models as an example, possible alternative approaches and the difficulties that need to be overcome to explore them. Partially based on the results of https://arxiv.org/abs/2203.03666 (Chudaykin, Gorbunov, Nedelko) as well as on ongoing research.
Primary author
Nikita Nedelko
(INR RAS)
