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arXiv 0705.3947hep-th
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Yang-Mills理论中的规范不变软模

Gauge-invariant soft modes in Yang-Mills theory

Hilmar Forkel

摘要:

本文在真空波泛函压缩近似的基础上,给出了Yang-Mills真空跃迁振幅的规范不变鞍点展开式。这个框架允许规范不变的红外自由度的识别出现的主导套的规范场轨道,并提供了一个基本上分析处理软振幅的主要输入。软模式的分析揭示了真空场如何组织自己的集体激发,并产生一个规范不变的表示瞬子和meron的影响,以及一个新的物理解释Faddeev Niemi结。

英文摘要:

A gauge-invariant saddle point expansion for the Yang-Mills vacuum transition amplitude on the basis of the squeezed approximation to the vacuum wave functional is outlined. This framework allows the identification of gauge-invariant infrared degrees of freedom which arise as dominant sets of gauge field orbits and provide the principal input for an essentially analytical treatment of soft amplitudes. The analysis of the soft modes sheds new light on how vacuum fields organize themselves into collective excitations and yields a gauge-invariant representation of instanton and meron effects as well as a new physical interpretation for Faddeev-Niemi knots.

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