4 papers
How gluon leading singularities discover curves on surfaces
Sérgio Carrôlo, Carolina Figueiredo
We study the leading singularities for pure gluon amplitudes obtained by on-shell gluing of three-particle amplitudes for an arbitrary graph in any number of dimensions. By encodin…
Cuts and Contours
Carolina Figueiredo, Marcos Skowronek
The traditional formulation of string amplitudes via worldsheet integrals provides a parametrization of the moduli space that fails to expose the complete singularity structure of…
Surface Gauge Invariance, Soft Limits and the Transmutation of Gluons into Scalars
Jeffrey V. Backus, Carolina Figueiredo
Over the past year, the "scalar-scaffolding" formalism has revealed a number of new features of gluon amplitudes. In this paper, we leverage these developments to study two distinc…
Soft Factorisation and Exponentiation from Schwinger-Space Geometry
Carolina Figueiredo, Giulio Gambuti, Holmfridur S. Hannesdottir
Infrared divergences in Quantum Field Theory govern the low-energy dynamics of many physical theories, and their understanding is a crucial ingredient in predicting the outcomes of…