One-Loop Amplitudes in N=4 Super Yang-Mills and Anomalous Dual Conformal Symmetry

Understand

We discuss what predictions can be made for one-loop superamplitudes in maximally supersymmetric Yang-Mills theory by using anomalous dual conformal symmetry.

• We show that the anomaly coefficient is a specific combination of two-mass hard and one-mass supercoefficients which appears in the supersymmetric on-shell recursion relations and equals the corresponding tree-level superamplitude.
• We discuss further novel relations among supercoefficients imposed by the remaining non-anomalous part of the symmetry.
• In particular, we find that all one-loop supercoefficients, except the four-mass box coefficients, can be expressed as linear combinations of three-mass box coefficients and a particular symmetric combination of two-mass hard coefficients.