Polyakov loop fluctuations in SU(3) lattice gauge theory and an effective gluon potential
Polyakov loop fluctuations in SU(3) lattice gauge theory and an effective gluon potential
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DOI：
10.1103/physrevd.88.074502
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发表时间：
2013-07
影响因子：
5
通讯作者：
P. M. Lo;B. Friman;O. Kaczmarek;K. Redlich;C. Sasaki
中科院分区：
文献类型：
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作者：
P. M. Lo;B. Friman;O. Kaczmarek;K. Redlich;C. Sasaki
利用Symanzik改进的规范作用量，计算了SU(3)格点规范理论中的Polyakov圈极化率。考虑了Polyakov环的纵向和横向涨落及其绝对值的涨落。我们分析了它们与约束-解禁闭相变的关系。我们还给出了基于32(3)×8格子上的(2+1)-味QCD的模拟结果，该模拟使用了HotQCD协作的高度改进的交错夸克作用。讨论了费米子对Polyakov环涨落的影响。我们发现，Poliakov环的不同磁化率的比率是临界行为的敏感探针。我们建立了一个有效的Polyakov环势模型，并从现有的包含涨落的猝灭晶格数据中约束了它的参数。我们强调涨落的作用，以一种有效的方法来充分探索纯规范理论的热力学。
We calculate the Polyakov loop susceptibilities in the SU(3) lattice gauge theory using the Symanzik improved gauge action on different-sized lattices. The longitudinal and transverse fluctuations of the Polyakov loop, as well as that of its absolute value, are considered. We analyze their properties in relation to the confinement-deconfinement phase transition. We also present results based on simulations of (2 + 1)-flavor QCD on 32(3) x 8 lattice using highly improved staggered quark action by the HotQCD collaboration. The influences of fermions on the Polyakov loop fluctuations are discussed. We show that ratios of different susceptibilities of the Polyakov loop are sensitive probes for critical behavior. We formulate an effective model for the Polyakov loop potential and constrain its parameters from existing quenched lattice data including fluctuations. We emphasize the role of fluctuations to fully explore the thermodynamics of pure gauge theory within an effective approach.