31 mai 2023
16:00 - 17:30
Amphithéâtre Guillaume Budé, Site Marcelin Berthelot
En libre accès, dans la limite des places disponibles


Glenn Barnich, Université Libre de Bruxelles, Belgique

La vidéo sera disponible prochainement.

The coadjoint representation of the BMS4 group is constructed and related to the conserved current algebra of non-radiative asymptotically flat spacetimes at null infinity. The associated geometric action is a field theory in two plus one dimensions whose Poisson bracket algebra of Noether charges realizes the BMS4 Lie algebra.