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Four-Loop Cusp Anomalous Dimension From Obstructions
Freddy Cachazo, Marcus Spradlin, Anastasia Volovich
We introduce a method for extracting the cusp anomalous dimension at L loops from four-gluon amplitudes in N=4 Yang-Mills without evaluating any integrals that depend on the kinema…
Dressing the Giant Magnon II
Chrysostomos Kalousios, Marcus Spradlin, Anastasia Volovich
We extend our earlier work by demonstrating how to construct classical string solutions describing arbitrary superpositions of scattering and bound states of dyonic giant magnons o…
Dressing the Giant Magnon
Marcus Spradlin, Anastasia Volovich
We apply the dressing method to construct new classical string solutions describing various scattering and bound states of magnons. These solutions carry one, two or three SO(6) ch…
Hidden Beauty in Multiloop Amplitudes
Freddy Cachazo, Marcus Spradlin, Anastasia Volovich
Planar L-loop maximally helicity violating amplitudes in N = 4 supersymmetric Yang-Mills theory are believed to possess the remarkable property of satisfying iteration relations in…
Iterative Structure Within The Five-Particle Two-Loop Amplitude
Freddy Cachazo, Marcus Spradlin, Anastasia Volovich
We find an unexpected iterative structure within the two-loop five-gluon amplitude in N = 4 supersymmetric Yang-Mills theory. Specifically, we show that a subset of diagrams contri…