Theory HEP Seminar

Factorization of IR Dynamics: Soft Black Hole Hair as Soft Wigs

Massimo Porrati

NYU

Conserved charges associated with large gauge symmetries and Bondi-Metzer-Sachs symmetries of asymptotically Minkowski spacetime have been recently shown to give new “soft hair” for black holes - beyond mass, charge and angular momentum. In this talk, I will outline a study of the constraint on dynamics due to these new symmetries. I will prove that they only constrain long-time, infrared dynamics, in a way that is completely factorizable. Factorization implies in that soft hair does not constrain “hard” physical processes and cannot be relevant for retrieving black hole information.