Feynman diagrams and differential equations

M Argeri, P Mastrolia - International Journal of Modern Physics A, 2007 - World Scientific
We review in a pedagogical way the method of differential equations for the evaluation of D-
dimensionally regulated Feynman integrals. After dealing with the general features of the …

Sector decomposition

G Heinrich - International Journal of Modern Physics A, 2008 - World Scientific
Sector decomposition is a constructive method to isolate divergences from parameter
integrals occurring in perturbative quantum field theory. We explain the general algorithm in …

Feynman integrals

S Weinzierl - arXiv preprint arXiv:2201.03593, 2022 - Springer
Feynman integrals are indispensable for precision calculations in quantum field theory. They
occur as soon as one goes beyond the leading order in perturbative quantum field theory …

The full four-loop cusp anomalous dimension in = 4 super Yang-Mills and QCD

JM Henn, GP Korchemsky, B Mistlberger - Journal of High Energy Physics, 2020 - Springer
A bstract We present the complete formula for the cusp anomalous dimension at four loops
in QCD and in maximally supersymmetric Yang-Mills. In the latter theory it is given …

[PDF][PDF] LiteRed 1.4: a powerful tool for the reduction of the multiloop integrals

RN Lee - arXiv preprint arXiv:1310.1145, 2013 - arxiv.org
arXiv:1310.1145v1 [hep-ph] 4 Oct 2013 Page 1 arXiv:1310.1145v1 [hep-ph] 4 Oct 2013
LiteRed 1.4: a powerful tool for the reduction of the multiloop integrals Roman N. Lee …

Pentagon functions for scattering of five massless particles

D Chicherin, V Sotnikov - Journal of High Energy Physics, 2020 - Springer
A bstract We complete the analytic calculation of the full set of two-loop Feynman integrals
required for computation of massless five-particle scattering amplitudes. We employ the …

The ice cone family and iterated integrals for Calabi-Yau varieties

C Duhr, A Klemm, C Nega, L Tancredi - Journal of High Energy Physics, 2023 - Springer
A bstract We present for the first time fully analytic results for multi-loop equal-mass ice cone
graphs in two dimensions. By analysing the leading singularities of these integrals, we find …

New relations for gauge-theory amplitudes

Z Bern, JJM Carrasco, H Johansson - Physical Review D—Particles, Fields …, 2008 - APS
We present an identity satisfied by the kinematic factors of diagrams describing the tree
amplitudes of massless gauge theories. This identity is a kinematic analog of the Jacobi …

Feynman integrals in dimensional regularization and extensions of Calabi-Yau motives

K Bönisch, C Duhr, F Fischbach, A Klemm… - Journal of High Energy …, 2022 - Springer
A bstract We provide a comprehensive summary of concepts from Calabi-Yau motives
relevant to the computation of multi-loop Feynman integrals. From this we derive several …

Presenting LiteRed: a tool for the loop InTEgrals REDuction

RN Lee - arXiv preprint arXiv:1212.2685, 2012 - arxiv.org
Mathematica package LiteRed is described. It performs the heuristic search of the symbolic
IBP reduction rules for loop integrals. It implements also several convenient tools for the …