Off-Shell CHY Amplitudes
arXiv:1511.05050
Abstract
The Cachazo-He-Yuan (CHY) formula for on-shell scattering amplitudes are extended off-shell. The off-shell amplitudes are Möbius invariant, and have the same momentum poles as the on-shell amplitudes. The same technique is also used to obtain off-shell massive scalar and vector boson amplitudes.
References updated. Text somewhat rewritten to better explain the contents