4 papers
Novel cluster-algebraic letters for 5- and 6-point QCD processes
Rigers Aliaj, Gabriele Dian, Georgios Papathanasiou
By breaking dual conformal invariance, we transform cluster-algebraic predictions for the alphabet of 9-point amplitudes in super Yang-Mills theory to analogous pre…
Rationalisation of multiple square roots in Feynman integrals
Georgios Papathanasiou, Stefan Weinzierl, Konglong Wu +1
Feynman integrals are very often computed from their differential equations. It is not uncommon that the -factorised differential equation contains only dlog-forms wit…
An Exceptional Cluster Algebra for Higgs plus Jet Production
Rigers Aliaj, Georgios Papathanasiou
A recent evaluation of three-loop nonplanar Feynman integrals contributing to Higgs plus jet production has established their dependence on two novel symbol letters. We show that t…
Landau Singularities from Whitney Stratifications
Martin Helmer, Georgios Papathanasiou, Felix Tellander
We demonstrate that the complete and non-redundant set of Landau singularities of Feynman integrals may be explicitly obtained from the Whitney stratification of a certain map. As…