125 citations · 292 across the 7 of their papers we have counts for
5 papers · 1 filter
Factorized soft graviton theorems at loop level
Johannes Broedel, Marius de Leeuw, Jan Plefka +1
We analyze the low-energy behavior of scattering amplitudes involving gravitons at loop level in four dimensions. The single-graviton soft limit is controlled by soft operators whi…
Constraining subleading soft gluon and graviton theorems
Johannes Broedel, Marius de Leeuw, Jan Plefka +1
We show that the form of the recently proposed subleading soft graviton and gluon theorems in any dimension are severely constrained by elementary arguments based on Poincaré and g…
Deformed one-loop amplitudes in N = 4 super-Yang-Mills theory
Johannes Broedel, Marius de Leeuw, Matteo Rosso
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 repr…
A dictionary between R-operators, on-shell graphs and Yangian algebras
Johannes Broedel, Marius de Leeuw, Matteo Rosso
We translate between different formulations of Yangian invariants relevant for the computation of tree-level scattering amplitudes in N=4 super-Yang--Mills theory. While the R-oper…
On Yangian-invariant regularisation of deformed on-shell diagrams in N=4 super-Yang-Mills theory
Niklas Beisert, Johannes Broedel, Matteo Rosso
We investigate Yangian invariance of deformed on-shell diagrams with D=4, N=4 superconformal symmetry. We find that invariance implies a direct relationship between the deformation…