Physics Letters B (Jun 2019)

Symmetries of celestial amplitudes

  • Stephan Stieberger,
  • Tomasz R. Taylor

DOI
https://doi.org/10.1016/j.physletb.2019.03.063
Journal volume & issue
Vol. 793
pp. 141 – 143

Abstract

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Celestial amplitudes provide holographic imprints of four-dimensional scattering processes in terms of conformal correlation functions on a two-dimensional sphere describing Minkowski space at null infinity. We construct the generators of Poincaré and conformal groups in the celestial representation and discuss how these symmetries are manifest in the amplitudes.