162 citations · 1.2k across the 29 of their papers we have counts for
6 papers · 1 filter
Soft gluon emission at two loops in full color
Lance J. Dixon, Enrico Herrmann, Kai Yan +1
The soft emission factor is a central ingredient in the factorization of generic -particle gauge theory amplitudes with one soft gluon in the external state. We present the comp…
All-Multiplicity Non-Planar MHV Amplitudes in sYM at Two Loops
Jacob L. Bourjaily, Enrico Herrmann, Cameron Langer +2
We give a closed-form, prescriptive representation of all-multiplicity two-loop MHV amplitude integrands in fully-color-dressed (non-planar) maximally supersymmetric Yang-Mills the…
Prescriptive Unitarity for Non-Planar Six-Particle Amplitudes at Two Loops
Jacob L. Bourjaily, Enrico Herrmann, Cameron Langer +2
We extend the applications of prescriptive unitarity beyond the planar limit to provide local, polylogarithmic, integrand-level representations of six-particle MHV scattering ampli…
Logarithmic forms and differential equations for Feynman integrals
Enrico Herrmann, Julio Parra-Martinez
We describe how a dlog representation of Feynman integrals leads to simple differential equations. We derive these differential equations directly in loop momentum or embedding spa…
Gravity loop integrands from the ultraviolet
Alex Edison, Enrico Herrmann, Julio Parra-Martinez +1
We demonstrate that loop integrands of (super-)gravity scattering amplitudes possess surprising properties in the ultraviolet (UV) region. In particular, we study the scaling of mu…
The two-loop five-point amplitude in supergravity
Samuel Abreu, Lance J. Dixon, Enrico Herrmann +2
We compute the symbol of the two-loop five-point amplitude in supergravity. We write an ansatz for the amplitude whose rational prefactors are based on not only 4-di…