Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8186807 | Physics Letters B | 2018 | 9 Pages |
Abstract
Pasterski, Shao and Strominger have recently proposed that massless scattering amplitudes can be mapped to correlators on the celestial sphere at infinity via a Mellin transform. We apply this prescription to arbitrary n-point tree-level gluon amplitudes. The Mellin transforms of MHV amplitudes are given by generalized hypergeometric functions on the Grassmannian Gr(4,n), while generic non-MHV amplitudes are given by more complicated Gelfand A-hypergeometric functions.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Anders Ã. Schreiber, Anastasia Volovich, Michael Zlotnikov,