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Confinement Mechanism in the Field Correlator Method

机译:场相关器法中的约束机制

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Confinement in QCD results from special properties of vacuum fluctuations of gluon fields. There are two numerically different scales, characterizing nonperturbativeQCD vacuum dynamics: “small” one, corresponding to gluon condensate, critical temperature etc, which is about 0.1–0.3 GeV, and a “large” one, given by inverse confining string width, glueball and gluelump masses, and so forth, which is about 1.5–2.5 GeV. We discuss the origin of this hierarchy in a picture where confinement is ensured by quadratic colorelectric field correlators of the special type. These correlators, on the other hand, can be calculated viagluelump Green's function, whose dynamics is defined by thecorrelators themselves. In this way one obtains a self-consistent scheme, where string tension can be expressed in terms ofΛQCD.
机译:QCD的限制是由胶子场的真空波动的特殊性质引起的。有两个数字上不同的标度,用于表征非扰动的QCD真空动力学:“小”一个,对应于胶凝析水,临界温度等,约为0.1–0.3 GeV,而“大”一个,由反约束线宽,胶球和胶团块等,大约为1.5–2.5 GeV。我们在图片中讨论此层次结构的起源,其中通过特殊类型的二次色电场相关器确保限制。另一方面,可以通过gluelump Green函数来计算这些相关器,其动态性由相关器本身定义。以这种方式,人们获得了一种自一致的方案,其中弦张力可以用QCD表示。

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