4 papers · 1 filter
Direct-to-Symbol Integration from Landau Analysis
Craig Larkin, Andrew J. McLeod, Andrzej Pokraka +1
We propose a Landau-analysis-inspired strategy for directly computing the symbol of integrals that evaluate to multiple polylogarithms in twisted cohomology. The central idea is to…
New Tools in the Landau Bootstrap
Piotr Bargieła, 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…
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…
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…