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arXiv 1301.7645hep-phnucl-th
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有效胶子势与杨-米尔斯热力学

Effective gluon potential and Yang-Mills thermodynamics

Chihiro Sasaki, Krzysztof Redlich

摘要:

我们在纯SU(3)Yang-Mills理论的微扰方法中导出了Polyakov圈热力学势。在基本表象中用Polyakov圈表示的势对应于强耦合展开的势,其中胶子能量分布的相关系数由SU(3)群的特征标确定。在高温下,势表现出正确的渐近行为,而在低温下,它不利于胶子作为适当的动力学自由度。为了量化受限相中的Yang-Mills热力学,我们引入了一种混合方法,该方法将有效胶子势与胶球势相匹配,并受QCD迹线异常的约束.

英文摘要:

We derive the Polyakov-loop thermodynamic potential in the perturbative approach to pure SU(3) Yang-Mills theory. The potential expressed in terms of the Polyakov loop in the fundamental representation corresponds to that of the strong-coupling expansion, of which the relevant coefficients of the gluon energy distribution are specified by characters of the SU(3) group. At high temperature, the potential exhibits the correct asymptotic behavior, whereas at low temperature, it disfavors gluons as appropriate dynamical degrees of freedom. To quantify the Yang-Mills thermodynamics in confined phase, we introduce a hybrid approach which matches the effective gluon potential to that of glueballs, constrained by the QCD trace anomaly in terms of dilaton fields.

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