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Automated generation of lattice QCD Feynman rules

机译:自动生成格点QCD费曼规则

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摘要

The derivation of the Feynman rules for lattice perturbation theory from actions and operators is complicated, especially for highly improved actions such as HISQ. This task is, however, both important and particularly suitable for automation. We describe a suite of software to generate and evaluate Feynman rules for a wide range of lattice field theories with gluons and (relativistic and/or heavy) quarks. Our programs are capable of dealing with actions as complicated as (m)NRQCD and HISQ Automated differentiation methods are used to calculate also the derivatives of Feynman diagrams.
机译:从动作和算子派生格摄动理论的费曼规则很复杂,尤其是对于高度改进的动作,例如HISQ。但是,该任务既重要又特别适合自动化。我们描述了一套软件,用于针对胶子和(相对论和/或重夸克)的各种晶格场理论生成和评估费曼规则。我们的程序能够处理复杂的动作,如(m)NRQCD和HISQ。自动微分方法也用于计算Feynman图的导数。

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