3 papers
hep-th2026
New Tools in the Landau Bootstrap
Piotr BargieÅa, Giulio Crisanti, Craig Larkin +4
We describe recent advances in our understanding of the analytic structure of Feynman integrals. In particular, we describe two new classes of constraints on such integrals, that i…
hep-th2025
Steinmann Violation and Minimal Cuts
Holmfridur S. Hannesdottir, Luke Lippstreu, Andrew J. McLeod +1
The Steinmann relations are known to be violated with respect to some -- but not all -- two-particle momentum channels in massless Feynman integrals. We trace the source of this St…
hep-ph2024
The Landau Bootstrap
Holmfridur Hannesdottir, Andrew McLeod, Matthew D. Schwartz +1
We advocate a strategy of bootstrapping Feynman integrals from just knowledge of their singular behavior. This approach is complementary to other bootstrap programs, which exploit…