2 papers
hep-th2025
Splitting CEGM Amplitudes
Bruno Giménez Umbert, Bernd Sturmfels
The CEGM formalism offers a general framework for scattering amplitudes, which rests on Grassmannians, moduli spaces and tropical geometry. The physical implications of this genera…
hep-th2024
Amplitudes from the Positive Tropical Grassmannian: Triangulations of Extended Diagrams
Bruno Giménez Umbert, Karen Yeats
The global Schwinger formula, introduced by Cachazo and Early as a single integral over the positive tropical Grassmannian, provides a way to uncover properties of scattering ampli…