Orateur
Simone Speziale
(CNRS, CPT Marseille)
Description
Boundaries and corners of gravitational subsystems allow the
construction of non-trivial Noether charges generating
infinite-dimensional symmetries, which have been advocated as a new
promising tool to understand quantum gravity. In this talk I will
focus on classical properties of these symmetries, with the goals of
explaining how they appear, how they provide a description of
non-local observables, and how physical prescriptions are required in
order to remove ambiguities in their construction.
