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Celestial recursion
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DOI：10.1007/JHEP01(2023)151.png)
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Abstract
En 中文
We examine the BCFW recursion relations for celestial amplitudes and how they inform the celestial bootstrap program. We start by recasting the celestial incarnation of the BCFW shift as a generalization of the action of familiar asymptotic symmetries on hard particles, before focusing on two limits: z -> infinity and z -> 0. We then discuss how the celestial CFT data encodes the large-z behavior determining which shifts are allowed, while the infinitesimal limit is tied to the celestial bootstrap program via the BG equations that constrain the MHV sector. The extension to super-BCFW is also presented. We close by remarking on several open questions for future study.
Keywords:
AdS-CFT Correspondence
Scattering Amplitudes
Journal
IF:
5.5
Papers:
3.9W
Citations:
13.7W