Automatically generating Feynman rules for improved lattice field theories

被引:23
|
作者
Hart, A
von Hippel, GM
Horgan, RR
Storoni, LC
机构
[1] Univ Edinburgh, Sch Phys, Edinburgh EH9 3JZ, Midlothian, Scotland
[2] Univ Cambridge, CMS, DAMTP, Cambridge CB3 0WA, England
[3] Univ Regina, Dept Phys, Regina, SK S4S 0A2, Canada
关键词
lattice field theory; Feynman rules; perturbation theory;
D O I
10.1016/j.jcp.2005.03.010
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
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 lattice field theories including gluons, relativistic fermions and heavy quarks. We also present an efficient implementation of this in a freely available, multi-platform programming language (PYTHON), optimised (c) 2005 Elsevier Inc. All rights reserved.
引用
收藏
页码:340 / 353
页数:14
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