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-th2024
Minimal Cuts and Genealogical Constraints on Feynman Integrals
Holmfridur S. Hannesdottir, Luke Lippstreu, Andrew J. McLeod +1
We introduce an efficient method for deriving hierarchical constraints on the discontinuities of individual Feynman integrals. This method can be applied at any loop order and part…