Physical Review Letters
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Nonlocal Symmetries of Planar Feynman Integrals
Author(s): Florian Loebbert, Lucas Rüenaufer, and Sven F. Stawinski
We prove the invariance of scalar Feynman graphs of any planar topology under the Yangian level-one momentum symmetry given certain constraints on the propagator powers. The proof relies on relating this symmetry to a planarized version of the conformal simplices of Bzowski, McFadden, and Skenderis.… [Phys. Rev. Lett. 135, 151603] Published Fri Oct 10, 2025
