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FIESTA 2: parallelizeable multiloop numerical calculations
A. V. Smirnov, V. A. Smirnov, M. Tentyukov
The program FIESTA has been completely rewritten. Now it can be used not only as a tool to evaluate Feynman integrals numerically, but also to expand Feynman integrals automaticall…
An Analytic Result for the Two-Loop Hexagon Wilson Loop in N = 4 SYM
Vittorio Del Duca, Claude Duhr, Vladimir A. Smirnov
In the planar N=4 supersymmetric Yang-Mills theory, the conformal symmetry constrains multi-loop n-edged Wilson loops to be basically given in terms of the one-loop n-edged Wilson…
Three-loop static potential
Alexander V. Smirnov, Vladimir A. Smirnov, Matthias Steinhauser
We compute the three-loop corrections to the potential of two heavy quarks. In particular we consider in this Letter the purely gluonic contribution which provides in combination w…
The one-loop pentagon to higher orders in epsilon
Vittorio Del Duca, Claude Duhr, E. W. Nigel Glover +1
We compute the one-loop scalar massless pentagon integral I_5^{6-2 eps} in D=6-2\eps dimensions in the limit of multi-Regge kinematics. This integral first contributes to the parit…
Quark and gluon form factors to three loops
P. A. Baikov, K. G. Chetyrkin, A. V. Smirnov +2
We compute the form factors of the photon-quark-anti-quark vertex and the effective vertex of a Higgs boson and two gluons to three-loop order within massless perturbative Quantum…
On the Resolution of Singularities of Multiple Mellin-Barnes Integrals
A. V. Smirnov, V. A. Smirnov
One of the two existing strategies of resolving singularities of multifold Mellin-Barnes integrals in the dimensional regularization parameter, or a parameter of the analytic regul…