Coordinate Space Methods for the Evaluation of Feynman Diagrams in Lattice Eld Theories
نویسنده
چکیده
We describe an eecient position space technique to calculate lattice Feyn-man integrals in innnite volume. The method applies to diagrams with mass-less 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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تاریخ انتشار 1995