327 citations · 3.9k across the 69 of their papers we have counts for
3 papers · 1 filter
One-loop amplitudes on the Riemann sphere
Yvonne Geyer, Lionel Mason, Ricardo Monteiro +1
The scattering equations provide a powerful framework for the study of scattering amplitudes in a variety of theories. Their derivation from ambitwistor string theory led to propos…
Loop Integrands for Scattering Amplitudes from the Riemann Sphere
Yvonne Geyer, Lionel Mason, Ricardo Monteiro +1
The scattering equations on the Riemann sphere give rise to remarkable formulae for tree-level gauge theory and gravity amplitudes. Adamo, Casali and Skinner conjectured a one-loop…
New Ambitwistor String Theories
Eduardo Casali, Yvonne Geyer, Lionel Mason +2
We describe new ambitwistor string theories that give rise to the recent amplitude formulae for Einstein-Yang-Mills, (Dirac)-Born-Infeld, Galileons and others introduced by Cachazo…