Antoine Rignon-Bret

Aug 26, 2024 | link.aps.org | Antoine Rignon-Bret |Aix Marseille Université |Université de Toulon |Simone Speziale

We show that when the Wald-Zoupas prescription is implemented, the resulting charges realize the Bondi-Van der Burg–Metzner-Sachs (BMS) symmetry algebra without any 2-cocycle nor central extension, at any cut of future null infinity. We refine the covariance prescription for application to the charge aspects, and introduce a new aspect for Geroch’s supermomentum with better covariance properties.