433 citations · 3.2k across the 66 of their papers we have counts for
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Amplitudes at Infinity
Jacob L. Bourjaily, Enrico Herrmann, Jaroslav Trnka
We investigate the asymptotically large loop-momentum behavior of multi-loop amplitudes in maximally supersymmetric quantum field theories in four dimensions. We check residue-theo…
A (Bounded) Bestiary of Feynman Integral Calabi-Yau Geometries
Jacob L. Bourjaily, Andrew J. McLeod, Matt von Hippel +1
We define the rigidity of a Feynman integral to be the smallest dimension over which it is non-polylogarithmic. We argue that massless Feynman integrals in four dimensions have a r…
Rationalizing Loop Integration
Jacob L. Bourjaily, Andrew J. McLeod, Matt von Hippel +1
We show that direct Feynman-parametric loop integration is possible for a large class of planar multi-loop integrals. Much of this follows from the existence of manifestly dual-con…
Traintracks Through Calabi-Yaus: Amplitudes Beyond Elliptic Polylogarithms
Jacob L. Bourjaily, Yang-Hui He, Andrew J. McLeod +2
We describe a family of finite, four-dimensional, -loop Feynman integrals that involve weight- hyperlogarithms integrated over -dimensional elliptically fibered va…