5 papers
On divergences in a four-derivative scalar field theory
Maegan Anderson, Sam Bateman, Franz Herzog +1
We perform a detailed diagrammatic analysis of the renormalisation of a family of asymptotically free, shift-symmetric four-derivative scalar field theories introduced by Holdom in…
The asymptotic Hopf Algebra of Feynman Integrals
Mrigankamauli Chakraborty, Franz Herzog
The method of regions is an approach for developing asymptotic expansions of Feynman Integrals. We focus on expansions in Euclidean signature, where the method of regions can also…
Splitting amplitudes at NLO in QCD
Xin Guan, Franz Herzog, Yao Ma +2
In the limit where partons become collinear to each other, scattering amplitudes factorize into a product of universal, process-independent building blocks and scattering amplitude…
Revealing Hidden Regions in Wide-Angle and Forward Scattering
Einan Gardi, Franz Herzog, Stephen Jones +1
We discuss a class of Feynman Integrals containing hidden regions that are not straightforwardly identified using the geometric, or Newton polytope, approach to the method of regio…
Dissecting polytopes: Landau singularities and asymptotic expansions in scattering
Einan Gardi, Franz Herzog, Stephen Jones +1
Parametric representations of Feynman integrals have a key property: many, frequently all, of the Landau singularities appear as endpoint divergences. This leads to a geometric int…