Original paper

Tree-level gluon amplitudes on the celestial sphere

Volume: 781, Pages: 349 - 357
Published: Jun 1, 2018
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...
Paper Details
Title
Tree-level gluon amplitudes on the celestial sphere
Published Date
Jun 1, 2018
Volume
781
Pages
349 - 357
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