Automated Methods in Chiral Perturbation Theory on the Lattice

Abstract

We present a method to automatically derive the Feynman rules for mesonic chiral perturbation theory with a lattice regulator. The Feynman rules can be output both in a human-readable format and in a form suitable for an automated numerical evaluation of lattice Feynman diagrams. The automated method significantly simplifies working with improved or extended actions. Some applications to the study of finite-volume effects will be presented.

6 pages, 4 figures, poster presented at Lattice2005(Hadron spectrum and quark masses)