CFTMAT Colloquium: 'Some new results on symmetries, conserved charges and black-hole physics'

Charges, whether they conserved or not, are a basic tool used to characterize states or configurations in fundamental physics. In this talk, always from a classical (i.e. non-quantum) point of view, I will first review the standard lore on conserved charges to then focus on the construction of charges (some of them, purely geometrical) that only satisfy Gauss laws and their use in the context of black-hole physics to derive Smarr formulas and no-hair therems.