Deformed one-loop amplitudes in N = 4 super-Yang-Mills theory
  We investigate Yangian-invariant deformations of one-loop amplitudes in N = 4 super-Yang-Mills theory employing an algebraic representation of amplitudes. In this language, we reproduce the deformed massless box integral describing the deformed four-point one-loop amplitude and compare different realizations of said amplitude. 
Johannes Broedel, Marius de Leeuw and Matteo Rosso
hep-th