ABJM amplitudes and WL at finite N

Understand

We evaluate ABJM observables at two loops, for any value of the rank N of the gauge group.

• We compute the color subleading contributions to the four-point scattering amplitude in ABJM at two loops.
• Contrary to the four dimensional case, IR divergent N-subleading contributions are proportional to leading poles in the regularization parameter.
• We then exploit the non-planar calculation for the amplitude to derive an expression for the two-loop Sudakov form factor at any N.