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hep-th2025
Geometric Singularities of Feynman Integrals
Martin Helmer, Felix Tellander
We provide a new method to calculate the full microlocal description of singularities of Feynman integrals. This is done by associating a unique constructible function to the syste…
hep-th2024
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…