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Gauge Theory Amplitudes In Twistor Space And Holomorphic Anomaly
Freddy Cachazo, Peter Svrcek, Edward Witten
We show that, in analyzing differential equations obeyed by one-loop gauge theory amplitudes, one must take into account a certain holomorphic anomaly. When this is done, the resul…
Twistor Space Structure Of One-Loop Amplitudes In Gauge Theory
Freddy Cachazo, Peter Svrcek, Edward Witten
We analyze the twistor space structure of certain one-loop amplitudes in gauge theory. For some amplitudes, we find decompositions that make the twistor structure manifest; for oth…
MHV Vertices And Tree Amplitudes In Gauge Theory
Freddy Cachazo, Peter Svrcek, Edward Witten
As an alternative to the usual Feynman graphs, tree amplitudes in Yang-Mills theory can be constructed from tree graphs in which the vertices are tree level MHV scattering amplitud…