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arXiv 1010.4448hep-th
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Gribov-Zwanziger框架中从传播子到胶球

From propagators to glueballs in the Gribov-Zwanziger framework

N. Vandersickel, D. Dudal, O. Oliveira, S. P. Sorella

摘要:

在过去的几年里,纯杨-米尔斯规范理论的格点计算似乎或多或少地达成了共识。鬼传播子不被增强,胶子传播子是正性破坏的、红外抑制的和零动量不为零的。从分析的角度来看,一些团体同意这些结果。其中,改进的Gribov-Zwanziger(RGZ)框架也适应这些结果。接下来出现的问题是,如果我们的模型对于传播子保持正确的形式,那么如何提取关于真实物理可观测量(即胶球)的信息?表示胶球的算子是什么样子的?我们在RGZ框架内审查了这一问题的现状。

英文摘要:

Over the last years, lattice calculations in pure Yang-Mills gauge theory seem to have come more or less to a consensus. The ghost propagator is not enhanced and the gluon propagator is positivity violating, infrared suppressed and non-vanishing at zero momentum. From an analytical point of view, several groups are agreeing with these results. Among them, the refined Gribov-Zwanziger (RGZ) framework also accommodates for these results. The question which rises next is, if our models hold the right form for the propagators, how to extract information on the real physical observables, i.e. the glueballs? How do the operators which represent glueballs look like? We review the current status of this matter within the RGZ framework.

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