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arXiv 0809.2044hep-ph
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解除监禁的力量

The Powers of Deconfinement

E. Megias, E. Ruiz Arriola, L. L. Salcedo

摘要:

由于解除禁闭相变周围的相互作用,导致了经典标度不变性的崩溃,而这种异常的轨迹是由胶子动力学的异常编码的。虽然预计在高温微扰理论变得适用,我们表明,目前的晶格计算是远离微扰制度,并占主导地位,而不是由逆偶功率校正的温度,而总的微扰的贡献估计是非常小的,并与零内的误差棒兼容。我们提供了一个解释,在二维胶子凝聚的降维理论的值同意类似的分析功率校正从现有的晶格数据的重整化Polyakov环和重夸克-反夸克自由能的退禁闭阶段的QCD。

英文摘要:

The trace anomaly of gluodynamics encodes the breakdown of classical scale invariance due to interactions around the deconfinement phase transition. While it is expected that at high temperatures perturbation theory becomes applicable we show that current lattice calculations are far from the perturbative regime and are dominated instead by inverse even power corrections in the temperature, while the total perturbative contribution is estimated to be extremely small and compatible with zero within error bars. We provide an interpretation in terms of dimension-two gluon condensate of the dimensionally reduced theory which value agrees with a similar analysis of power corrections from available lattice data for the renormalized Polyakov loop and the heavy quark-antiquark free energy in the deconfined phase of QCD.

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