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arXiv 0812.0008hep-th
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Yang-Mills双回路有效action的迭代方法

On the Yang-Mills two-loop effective action with wordline methods

Jan M. Pawlowski, Michael G. Schmidt, Jian-Hui Zhang

摘要:

在红外标度存在的情况下,我们导出了纯杨-米尔斯理论中协变常场强度的双圈有效作用量。计算是在世界线形式主义的框架下进行的,基于玻色世界线路径积分构造多回路有效作用量的推广过程。正确再现了双环β函数。这是世界线公式的第一个推导,并作为世界线形式主义中多循环推广过程的一致性的非平凡检查。

英文摘要:

We derive the two-loop effective action for covariantly constant field strength of pure Yang-Mills theory in the presence of an infrared scale. The computation is done in the framework of the worldline formalism, based on a generalization procedure of constructing multiloop effective actions in terms of the bosonic worldline path integral. The two-loop beta-function is correctly reproduced. This is the first derivation in the worldline formulation, and serves as a nontrivial check on the consistency of the multiloop generalization procedure in the worldline formalism.

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