4 papers
Asymptotically-FLRW spacetimes
Andrea Campoleoni, Arnaud Delfante, Marc Geiller +1
We introduce three-dimensional asymptotically-FLRW spacetimes as a simplified setting in which to study asymptotic symmetries and radiation in cosmology. Their asymptotic symmetry…
Holographic realization of higher-spin Carrollian free fields
Ethan D'Arcy, Arnaud Delfante, Stefan Fredenhagen
We provide a holographic bulk realization of Carrollian free-field structures arising in three-dimensional asymptotically flat (higher-spin) gravity. We construct a class of bounda…
Finite actions and asymptotic charges at null infinity for any spin
Andrea Campoleoni, Arnaud Delfante, Dario Francia +1
We identify boundary terms renormalizing the free on-shell actions for massless fields of arbitrary spin, including electromagnetism and linearized gravity, with boundary condition…
Boundary freedom in higher spin gravity
Arnaud Delfante
We investigate new boundary conditions in three-dimensional asymptotically Anti-de Sitter gravity coupled to higher-spin fields, allowing for arbitrary boundary degrees of freedom.…