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arxiv: hep-lat/9502017 · v2 · pith:DUE65BCOnew · submitted 1995-02-22 · ✦ hep-lat

Coordinate space methods for the evaluation of Feynman diagrams in lattice field theory

classification ✦ hep-lat
keywords latticediagramsfeynmanintegralsspaceappliescalculatecoordinate
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We describe an efficient position space technique to calculate lattice Feynman integrals in infinite volume. The method applies to diagrams with massless propagators. For illustration a set of two-loop integrals is worked out explicitly. An important ingredient is an observation of Vohwinkel that the free lattice propagator can be evaluated recursively and is expressible as a linear function of its values near the origin.

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