Numerical evaluation of general massive 2-loop self-mass master integrals from differential equations
2003
Abstract The system of four differential equations in the external invariant satisfied by the four master integrals of the general massive 2-loop sunrise self-mass diagram is solved by the Runge–Kutta method in the complex plane. The method offers a reliable and robust approach to the direct and precise numerical evaluation of Feynman graph integrals.
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