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arXiv 1406.4050hep-ph
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重夸克极限中的Polyakov圈涨落和解除禁闭

Polyakov loop fluctuations and deconfinement in the limit of heavy quarks

Pok Man Lo, Bengt Friman, Krzysztof Redlich

摘要:

在色SU(3)胶子与动力学夸克相互作用的有效模型中,研究了重夸克对退禁闭相变的影响。随着夸克质量的减小,Z(3)对称性显式破缺的强度增加,一级跃迁在临界终点结束。通过研究Polyakov回路的纵向和横向波动来研究临界端点的性质,并通过相应的非线性度来量化。纵向磁化率在临界区增强,而横向磁化率在转变点附近表现出单调的行为。我们研究了临界端点对夸克味数的依赖性。最后,我们面对模型的结果与晶格计算,并讨论了跳跃参数和夸克质量之间的可能联系。

英文摘要:

We explore the influence of heavy quarks on the deconfinement phase transition in an effective model for gluons interacting with dynamical quarks in color SU(3). With decreasing quark mass, the strength of the explicit breaking of the Z(3) symmetry grows and the first-order transition ends in a critical endpoint. The nature of the critical endpoint is examined by studying the longitudinal and transverse fluctuations of the Polyakov loop, quantified by the corresponding susceptibilities. The longitudinal susceptibility is enhanced in the critical region, while the transverse susceptibility shows a monotonic behavior across the transition point. We investigate the dependence of the critical endpoint on the number of quark flavors at vanishing and finite quark density. Finally we confront the model results with lattice calculations and discuss a possible link between the hopping parameter and the quark mass.

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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