Speaker: Dario Bettoni (Salamanca U., IUFFyM)
Title: Charged dark matter
Abstract:
Is it possible to have long range forces competing with gravity at large, astrophysical and cosmological scales? The unknown nature of the dark sector allows to speculate on this possibility. In this talk I will present a model in which a universally charged dark matter component has this property. This scenario comes equipped with a natural screening mechanism a là K-mouflage thus avoiding traditional constraints on this kind of forces. After introducing the model properties, I will focus on its phenomenology. In particular, I will show how an inhomogeneous cosmological model is dynamically generated and explore its connection with the Hubble tension and astrophysical bodies dynamics. Finally, I will briefly discuss how further constraints on the model can be cast by considering the linear response of charged objects under an external static field.
Room: Sala de Reuniões e Seminários (2-8.3) (2nd Floor of Physics Building)