PoS - Proceedings of Science
Volume 375 - 14th International Symposium on Radiative Corrections (RADCOR2019) - Integral Techniques
Diagrammatic Coaction of Two-Loop Feynman Integrals
S. Abreu, R. Britto, C. Duhr, E. Gardi, J. Matthew*
*corresponding author
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Pre-published on: December 19, 2019
Published on: February 18, 2020
It is known that one-loop Feynman integrals possess an algebraic structure encoding some of their analytic properties called the coaction, which can be written in terms of Feynman integrals and their cuts. This diagrammatic coaction, and the coaction on other classes of integrals such as hypergeometric functions, may be expressed using suitable bases of differential forms and integration contours. This provides a useful framework for computing coactions of Feynman integrals expressed using the hypergeometric functions. We will discuss examples where this technique has been used in the calculation of two-loop diagrammatic coactions.
DOI: https://doi.org/10.22323/1.375.0065
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