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arXiv 0912.4203hep-lat
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格点Landau规范中Gribov二义性的强耦合研究

Strong-coupling study of the Gribov ambiguity in lattice Landau gauge

Axel Maas, Jan M. Pawlowski, Daniel Spielmann, Andre Sternbeck, Lorenz von Smekal

摘要:

本文研究了格点SU(2)Landau规范Yang-Mills理论的强耦合极限β =0。在这个极限中,晶格间距是无限的,因此所有物理单位中的动量都是无限小的。因此,可以在足够大的晶格动量下评估红外行为。我们的研究结果表明,在这里使用的晶格体积,Gribov模糊性在所有维度的鬼传播子有巨大的影响。这强调了Gribov问题的严重性,并要求在有限的beta下进行精细的研究。反过来,胶子传播子仅轻微地依赖于Gribov模糊性。

英文摘要:

We study the strong-coupling limit beta=0 of lattice SU(2) Landau gauge Yang-Mills theory. In this limit the lattice spacing is infinite, and thus all momenta in physical units are infinitesimally small. Hence, the infrared behavior can be assessed at sufficiently large lattice momenta. Our results show that at the lattice volumes used here, the Gribov ambiguity has an enormous effect on the ghost propagator in all dimensions. This underlines the severity of the Gribov problem and calls for refined studies also at finite beta. In turn, the gluon propagator only mildly depends on the Gribov ambiguity.

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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