44 citations · 101 across the 8 of their papers we have counts for
9 papers
Carroll-Weyl symmetries in flat holography
Arnaud Delfante, Chrysoula Markou
The degenerate geometry of a null boundary admits an enlarged local conformal freedom: in two dimensions, a Carrollian coframe allows two independent Weyl rescalings, one modulatin…
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…
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.…
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…
Flat from anti-de Sitter
Andrea Campoleoni, Arnaud Delfante, Simon Pekar +3
Ricci-flat solutions to Einstein's equations in four dimensions are obtained as the flat limit of Einstein spacetimes with negative cosmological constant. In the limiting process,…
Symmetries and Charges in Weyl-Fefferman-Graham Gauge
Luca Ciambelli, Arnaud Delfante, Romain Ruzziconi +1
We investigate the asymptotic symmetries of three-dimensional AdS Einstein gravity in the Weyl-Fefferman-Graham gauge, which is a generalization of the Fefferman-Graham gauge induc…
Renormalization of spin-one asymptotic charges in AdS
Andrea Campoleoni, Arnaud Delfante, Dario Francia +1
We study the renormalized action and the renormalized presymplectic potential for Maxwell fields on Anti de Sitter backgrounds of any dimensions. We then use these results to expli…
Holographic Lorentz and Carroll Frames
Andrea Campoleoni, Luca Ciambelli, Arnaud Delfante +3
Relaxing the Bondi gauge, the solution space of three-dimensional gravity in the metric formulation has been shown to contain an additional free function that promotes the boundary…