Two-loop $D$-dimensional unitarity and dual-conformal symmetry
Z. Bern,
M. Enciso,
H. Ita and
M. Zeng*
*: corresponding author
Published on:
October 02, 2018
Abstract
In this talk we show that dual conformal symmetry has unexpected applications to Feynman integrals in dimensional regularization. Outside $4$ dimensions, the symmetry is anomalous, but still preserves the unitarity cut surfaces. This generally leads to differential equations whose RHS is proportional to $(d-4)$ and has no doubled propagators. The stabilizer subgroup of the conformal group leads to integration-by-parts (IBP) relations without doubled propagators. The above picture also suggested hints that led us to find a nonplanar analog of dual conformal symmetry.
DOI: https://doi.org/10.22323/1.303.0084
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