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Two-Loop Spacelike Splitting Amplitude for N=4 Super-Yang-Mills Theory

Autor: Henn, Johannes, Ma, Rourou, Xu, Yongqun, Yan, Kai, Zhang, Yang, Zhu, Hua Xing

The study of collinear behavior for gauge theories in the spacelike region is of great phenomenological and theoretical importance. We analytically calculate the two-loop spacelike splitting amplitude for the full color N=4 Super-Yang-Mills theory. T

Externí odkaz: http://arxiv.org/abs/2406.14604

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NeatIBP 1.0, A package generating small-size integration-by-parts relations for Feynman integrals

Autor: Wu, Zihao, Boehm, Janko, Ma, Rourou, Xu, Hefeng, Zhang, Yang

In this work, we present the package {\sc NeatIBP}, which automatically generates small-size integration-by-parts (IBP) identities for Feynman integrals. Based on the syzygy and module intersection techniques, the generated IBP identities' propagator

Externí odkaz: http://arxiv.org/abs/2305.08783

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Four-dimensional differential equations for the leading divergences of dimensionally-regulated loop integrals

Autor: Henn, Johannes, Ma, Rourou, Yan, Kai, Zhang, Yang

We invent an automated method for computing the divergent part of Feynman integrals in dimensional regularization. Our method exploits simplifications from four-dimensional integration-by-parts identities. Leveraging algorithms from the literature, w

Externí odkaz: http://arxiv.org/abs/2211.13967

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A study of Feynman integrals with uniform transcendental weights and the symbology from dual conformal symmetry

Autor: He, Song, Li, Zhenjie, Ma, Rourou, Wu, Zihao, Yang, Qinglin, Zhang, Yang

Multi-loop Feynman integrals are key objects for the high-order correction computations in high energy phenomenology. These integrals with multiple scales, may have complicated symbol structures. We show that the dual conformal symmetry sheds light o

Externí odkaz: http://arxiv.org/abs/2206.04609

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pfd-parallel, a Singular/GPI-Space package for massively parallel multivariate partial fractioning

Autor: Bendle, Dominik, Boehm, Janko, Heymann, Murray, Ma, Rourou, Rahn, Mirko, Ristau, Lukas, Wittmann, Marcel, Wu, Zihao, Zhang, Yang

Multivariate partial fractioning is a powerful tool for simplifying rational function coefficients in scattering amplitude computations. Since current research problems lead to large sets of complicated rational functions, performance of the partial

Externí odkaz: http://arxiv.org/abs/2104.06866

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