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arXiv 1110.6340hep-lathep-phnucl-th
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接近临界的胶子传播子

The gluon propagator close to criticality

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

摘要:

纯Yang-Mills理论在有限温度下的退禁闭相变反映在规范固定的胶子关联函数的行为中。这是如何从规范相关性中提取物理信息的许多例子之一,这些相关性并不总是显而易见的。在这里,我们研究了纯SU(2)的Landau规范胶子传播子在2+1和3+1维中的相变的行为,以评估相应的临界行为在多大程度上反映在这些关联中。我们讨论了为什么它应该从连续统的角度出现,并在晶格模拟中测试我们的期望。与SU(3)的比较进一步揭示了胶子传播子对跃迁阶数的敏感性。

英文摘要:

The deconfinement phase transition of pure Yang-Mills theory at finite temperature is reflected in the behavior of gauge-fixed gluonic correlation functions. This is one of many examples of how physical information can be extracted from gauge-dependent correlations which is not always obvious. Here, we study the behavior of the Landau-gauge gluon propagator of pure SU(2) across the phase transition in 2+1 and 3+1 dimensions in order to assess to what extend the corresponding critical behavior is reflected in these correlations. We discuss why it should emerge from a continuum perspective and test our expectations in lattice simulations. A comparison with SU(3) furthermore reveals quite clear indications for a sensitivity of the gluon propagator to the order of the transition.

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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