Theory seminar: Johann Usovitsch

Thursday 23 Sept 2021, 16:00 → 17:00 Europe/Amsterdam

Nikhef

Caesar: the blueprint for numerical evaluation of Feynman integrals

 

We present Caesar, a program which automates many methods to compute
Feynman integrals numerically in physical regions. The applied chain of
tools involves the derivation of a system of differential equations for
finite master integrals, the numerical evaluation of finite master
integrals in euclidean regions, and finally the transport of the
Euclidean boundary terms to the physical regions via the series
expansion of the system of differential equations.

Caesar has been successfully tested in numerical computations of
three-loop massive vertex and propagator-like Feynman integrals arising
in the study of radiative corrections in electroweak theory.

 

Usovitsch.pdf

Zoom recording