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arXiv 0804.4890hep-phhep-lathep-thnucl-th
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$T_c$附近QCD等离子体的静态$\bar Q Q$电位和磁分量

Static $\bar Q Q$ Potentials and the Magnetic Component of QCD Plasma near $T_c$

Jinfeng Liao, Edward Shuryak

摘要:

静态夸克-反夸克势编码了色荷之间色动力学相互作用的重要信息,最近的晶格结果显示了它在解除禁闭温度$T_c$附近的非常不平凡的行为。本文在近Tc QCD等离子体的“磁引力”框架下研究了这种势,特别着重于势中的线性部分(用它的斜率来量化,即张力)以及自由能和内能之间的强分裂。通过使用解析的"椭球袋“模型,我们将定量地将自由能张力与磁凝聚密度联系起来,并将内能张力与热凝聚密度联系起来。通过将静态势的晶格结果转换为热单极子的密度,我们发现在Tc附近的密度非常大,并且在量子相干性下指示,与直接晶格计算的这种密度非常一致。重离子碰撞现象学的一些重要结果也将被讨论。

英文摘要:

Static quark-anti-quark potential encodes important information on the chromodynamical interaction between color charges, and recent lattice results show its very nontrivial behavior near the deconfinement temperature $T_c$. In this paper we study such potential in the framework of the ``magnetic scenario'' for the near Tc QCD plasma, and particularly focus on the linear part (as quantified by its slope, the tension) in the potential as well as the strong splitting between the free energy and internal energy. By using an analytic ``ellipsoidal bag'' model, we will quantitatively relate the free energy tension to the magnetic condensate density and relate the internal energy tension to the thermal monopole density. By converting the lattice results for static potential into density for thermal monopoles we find the density to be very large around Tc and indicate at quantum coherence, in good agreement with direct lattice calculation of such density. A few important consequences for heavy ion collisions phenomenology will also be discussed.

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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