Graviton amplitudes from collinear limits of gauge amplitudes

摘要

We express all tree-level graviton amplitudes in Einstein's gravity as the collinear limits of a linear combination of pure Yang-Mills amplitudes in which each graviton is represented by two gauge bosons, each of them carrying exactly one half of graviton's momentum and helicity. (C) 2015 The Authors. Published by Elsevier B.V.