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Résumé |
Carrollian holography proposes that gravity in four-dimensional (4d)
asymptotically flat spacetime is dual to a 3d Carrollian CFT living at null
infinity. In this talk, I will explain how massless amplitudes in flat space can
be re-expressed as Carrollian CFT correlators at the boundary, referred to as
Carrollian amplitudes. I will show that these correlators naturally emerge from
the Carrollian limit of holographic CFT correlators computed via AdS Witten
diagrams, establishing a correspondence between the flat limit in the bulk and the
Carrollian limit at the boundary. As a concrete application, I will implement the
flat/Carrollian limit of the duality between 11d supergravity on AdS4xS7 and 3d
N=8 ABJM theory, extracting supergravity amplitudes in flat space. |
