236 citations · 910 across the 14 of their papers we have counts for
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hep-th2022★ 1 cited
A Symbol and Coaction for Higher-Loop Sunrise Integrals
Andreas Forum, Matt von Hippel
We construct a symbol and coaction for -loop sunrise integrals, both for the equal-mass and generic-mass cases. These constitute the first concrete examples of symbols and coact…
hep-th2022★ 1 cited
Landau Singularities and Higher-Order Roots
Jacob L. Bourjaily, Cristian Vergu, Matt von Hippel
Landau's work on the singularities of Feynman diagrams suggests that they can only be of three types: either poles, logarithmic divergences, or the roots of quadratic polynomials.…