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arXiv 0705.3160hep-th
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扰动QFT中对主沃德恒等式的违反的消除

Removal of violations of the Master Ward Identity in perturbative QFT

Ferdinand Brennecke, Michael Duetsch

摘要:

我们研究了微扰QFT中普遍重整化条件主沃德恒等式的反常现象。本文的主要观点是,任何违反主沃德恒等式可以表示为一个相互作用的场,这是一个版本的著名的量子作用原理洛温斯坦和林。在适当的领域形式主义进行归纳的顺序在$\hbar$,这种知识的结构可能的异常以及技术的代数重整化被用来消除可能的异常有限重整化。作为一个例子,用该方法证明了O(N)标量场模型的沃德恒等式.

英文摘要:

We study the appearance of anomalies of the Master Ward Identity, which is a universal renormalization condition in perturbative QFT. The main insight of the present paper is that any violation of the Master Ward Identity can be expressed as a LOCAL interacting field; this is a version of the well-known Quantum Action Principle of Lowenstein and Lam. Proceeding in a proper field formalism by induction on the order in $\hbar$, this knowledge about the structure of possible anomalies as well as techniques of algebraic renormalization are used to remove possible anomalies by finite renormalizations. As an example the method is applied to prove the Ward identities of the O(N) scalar field model.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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