论文标题
新协变Feynman有效现场理论规则
New Covariant Feynman Rules for Effective Field Theories
论文作者
论文摘要
我们提供了一种新的，完全一般的形式主义，以计算有效的田间理论匹配贡献，从以明显的量规协变方式以任何所需的循环顺序整合大规模田地。形式主义基于诸如背景现场方法和热核之类的旧思想，但是我们添加了一些至关重要的新成分，可以极大地提高该方法的简单性和一般适用性。我们根据Feynman规则制定方法，由局部热核系数表示，由此产生的有效作用。我们还提供了补充材料的数学代码，可促进这些系数的计算。
We provide a new and completely general formalism to compute the effective field theory matching contributions from integrating out massive fields in a manifestly gauge covariant way, at any desired loop order. The formalism is based on old ideas such as the background field method and the heat kernel, however we add some crucial new ingredients that greatly improve the simplicity and general applicability of the approach. We formulate our method in terms of Feynman rules, the resulting effective action is expressed in terms of local heat kernel coefficients. We also provide as supplementary material a mathematica code that facilitates the computation of these coefficients.
