11:00 am–12:00 pm ERC 401
Georges Obied (University of Oxford) "Phenomenology, Cosmology and Astrophysics of the Dark Dimension"
In this talk, I will discuss the motivation for considering an extra mesoscopic Dark Dimension of length l ~ 1 - 10 microns, taking into account theoretical and observational arguments. I will then talk about cosmological aspects of the Dark Dimension. In particular this scenario leads, by the universal coupling of the Standard Model sector to bulk gravitons, to massive spin 2 KK excitations of the graviton in the Dark Dimension (the “dark gravitons”) as an unavoidable dark matter candidate. I will also discuss observable features of this model and constraints from astrophysics and cosmology. These allow an extra dimension of size in the micron range, as above, and predict a dark matter mass around 100 keV.
