Laboratoire Charles Coulomb UMR 5221 CNRS/UM2 (L2C)


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(1) Presentation(s)


Mar. 05/03/2019 14:00 Grande Ourse, Bâtiment 13, Etage 1

URBANO Alfredo (SISSA, Trieste)
Is gravity the weakest force?

(Interactions fondamentales, Astroparticules et Cosmologie)


In this seminar, addressed to a broad audience, I will discuss up to what extent the question proposed in the title is not as rhetorical as it may seem.
One need only think, for example, to the fact that ordinary electromagnetism overwhelms gravity at the atomic and sub-atomic levels but on planetary scales it is the other way around.
On planetary scales, gravity must be the strongest force in order to form gravitationally bound systems.
Motivated by this simple observation, I will discuss a number of phenoemenological (motivated by the recent direct observations of gravitational waves) and theoretical (motivated by the co-called "swampland program") aspects.

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Pour plus d'informations, merci de contacter Frigerio M.