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arXiv 0904.4033hep-lat
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β = 0时杨-米尔斯理论中的朗道规范传播子:质量解与共形标度

Landau-gauge propagators in Yang-Mills theories at beta = 0: massive solution versus conformal scaling

Attilio Cucchieri, Tereza Mendes

摘要:

我们研究了晶格参数β = 0时杨-米尔斯理论中的朗道规范胶子和鬼传播子,考虑了三维和四维时空中SU(2)规范群的相对较大的晶格体积。我们比较晶格数据的所谓的大规模和保形缩放的解决方案,检查的要求,一个很好的描述传播在各种范围内的动量和讨论可能的系统误差。我们的分析有力地支持了与文献[1]不同的质量解,即在红外极限下,一个有限胶子传播子和一个本质上自由的鬼传播子。此外,我们认为,离散化效应在这些传播子的分析中不起作用。

英文摘要:

We study Landau-gauge gluon and ghost propagators in Yang-Mills theories at lattice parameter beta = 0, considering relatively large lattice volumes for the case of the SU(2) gauge group in three and four space-time dimensions. We compare the lattice data to the so-called massive and conformal-scaling solutions, examining the requirements for a good description of the propagators over various ranges of momenta and discussing possible systematic errors. Our analysis strongly supports the massive solution, i.e. a finite gluon propagator and an essentially free ghost propagator in the infrared limit, in disagreement with Ref. [1]. Moreover, we argue that discretization effects play no role in the analysis of these propagators.

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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