Speaker
Vigneron Quentin
(Copernicus University of Toruń)
Description
I will present a new cosmological model in which the expansion is no longer affected by spatial curvature (i.e. Ω = 1, ∀ Ω_k), while the measure of distances still requires this curvature. The model originates from a modification of Einstein's equation in a which a term related to the topology of the Universe is added. First, I will present the main motivation for this modification, which is related to the existence of the non-relativistic limit for any topology. Then, I will present the model and discuss its consequences on the value of the spatial curvature inferred from observations, in particular with respect to the recent ``curvature tension''.
Author
Vigneron Quentin
(Copernicus University of Toruń)
