Britto-Cachazo-Feng-Witten 2005 on-shell-recursion; modern amplituhedron Arkani-Hamed-Trnka 2014; revolutionized perturbative QFT.
Britto-Cachazo-Feng-Witten 2005 on-shell-recursion; modern amplituhedron Arkani-Hamed-Trnka 2014; revolutionized perturbative QFT.