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.
By Maïté Dupuis
By Johannes Thürigen
By Antônio Duarte Pereira
By Sumati Surya
By Riccardo Martini
By Raimar Wulkenhaar
By Valentin Bonzom
By Gaëtan Borot
By Timothy Budd
By Jan Ambjorn
By Laurent Baulieu
By François David
By Reiko Toriumi
By Thomas Krajewski
By Simone Speziale
By Marc Levine
By Claudio Dappiaggi
By Ronnie Pavlov
By Tamara Kucherenko
