New Identities among Gauge Theory Amplitudes
N. E. J. Bjerrum-Bohr, Poul H. Damgaard, Bo Feng, Thomas Sondergaard
Abstract
Color-ordered amplitudes in gauge theories satisfy non-linear identities involving amplitude products of different helicity configurations. We consider the origin of such identities and connect them to the Kawai-Lewellen-Tye (KLT) relations between gravity and gauge theory amplitudes. Extensions are made to one-loop order of the full N=4 super Yang-Mills multiplet.