A bstract Among the unitarity cuts of 4-loop massless propagators two kinds are currently
fully known: the 2-particle cuts with 3 loops corresponding to form-factors, and the 5-particle …

We present the Mathematica package DREAM for arbitrarily high precision computation of
multiloop integrals within the DRA (Dimensional Recurrence & Analyticity) method as …

In this thesis we present the analytic calculation of all master integrals for 3-, 4-, and 5-
particle cuts of massless 4-loop propagators, as well as 3-, 4-, and 5-particle semi-inclusive …

A bstract We derive an analytical expression for the contribution of the order mα 2 (Zα) 6 to
the hydrogen Lamb shift which comes from the diagrams for radiative corrections to the …

A bstract We present analytical expressions for the 31 five-particle phase-space master
integrals in massless QCD as an ϵ-series with coefficients being multiple zeta values of …

We introduce a new method for deriving Feynman integral symmetry relation. By solving the
ansatz of momentum transformation in the field of rational functions rather than constants …

We derive an analytical expression for the contribution of the order $ m\alpha^ 2 (Z\alpha)^
6$ to the hydrogen Lamb shift which comes from the diagrams for radiative corrections to the …