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arXiv 0712.2707hep-ph
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QCD中Schwinger-Dyson方程的规范不变截断格式

Gauge-invariant truncation scheme for the Schwinger-Dyson equations of QCD

Daniele Binosi, Joannis Papavassiliou

摘要:

我们提出了一个新的截断方案的Schwinger-Dyson方程的QCD尊重规范不变性在任何水平的装饰环展开。当应用于胶子自能时,它允许它的非微扰处理,而不损害解的横截性,即使整个图集(最明显的鬼环)被省略,或微扰处理。

英文摘要:

We present a new truncation scheme for the Schwinger-Dyson equations of QCD that respects gauge invariance at any level of the dressed loop expansion. When applied to the gluon self-energy, it allows for its non-perturbative treatment without compromising the transversality of the solution, even when entire sets of diagrams (most notably the ghost loops) are omitted, or treated perturbatively.

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