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PIRSA:24070080

A Celestial Dual for MHV Amplitudes

APA

(2024). A Celestial Dual for MHV Amplitudes. Perimeter Institute. https://pirsa.org/24070080

Walker Melton
Talk number
PIRSA:24070080
Talk Type
Abstract
We show that a 2D CFT consisting of a central charge c Liouville theory, a chiral level one, rank N Kac-Moody algebra and a weight −3/2 free fermion holographically generates 4D MHV leaf amplitudes associated to a single hyperbolic slice of flat space. Celestial amplitudes arise in a large-N and semiclassical large-c limit, according to the holographic dictionary, as a translationally-invariant combination of leaf amplitudes. A step in the demonstration is showing that the semiclassical limit of Liouville correlators are given by contact AdS3 Witten diagrams.