Automatically generating Feynman rules for improved lattice field theories

Deriving the Feynman rules for lattice perturbation theory from actions and operators is complicated, especially when improvement terms are present. This physically important task is, however, suitable for automation. We describe a flexible algorithm for generating Feynman rules for a wide range of...

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Vydáno v:	Journal of computational physics Ročník 209; číslo 1; s. 340 - 353
Hlavní autoři:	Hart, A., von Hippel, G.M., Horgan, R.R., Storoni, L.C.
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Amsterdam Elsevier Inc 10.10.2005 Elsevier
Témata:	ALGORITHMS B QUARKS C QUARKS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS Computational techniques Exact sciences and technology Fermions FEYNMAN GAS MODEL Feynman rules Field theory GLUONS IMPLEMENTATION LATTICE FIELD THEORY Lattices Mathematical methods in physics PERTURBATION THEORY Physics PROGRAMMING LANGUAGES RELATIVISTIC RANGE T QUARKS Tasks 11.15.Ha 12.38.Gc Perturbation theory 65S05 81T18 81V05 81T13 Feynman rules 81T25 81T15 41A58 81-04 Lattice field theory Operator Feynman rule Lattice theory Heavy fermions Heavy quark effective theory Calculation methods Algorithms Gluons 12.38.Gc 81.04 Calculation 41A58 Lattice field theory
ISSN:	0021-9991, 1090-2716
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