Greens function of a free massive scalar field on the lattice
arXiv:hep-lat/0508005 · doi:10.1103/PhysRevD.72.056003
Abstract
We propose a method to calculate the Greens function of a free massive scalar field on the lattice numerically to very high precision. For masses m < 2 (in lattice units) the massive Greens function can be expressed recursively in terms of the massless Greens function and just two additional mass-independent constants.
10 pages, 1 figure