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QCD相变附近电通量管的寿命

The Lifetime of the Electric Flux Tubes near the QCD Phase Transition

Cyrus Faroughy, Edward Shuryak

发表信息：
Phys.Rev.C82:014902,2010
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摘要：

电通量管是量子色动力学真空的一个众所周知的属性，它们表现出电色荷的限制。最近，实验结果表明，不仅这些对象坚持在温度$T\approx T_c$附近的QCD相变，但它们的衰变受到抑制，并在AuAu碰撞所产生的集群是大于在pp（即在真空中）。这与最近的理论观点很好地联系在一起，这些理论观点认为$T\approx T_{c}$区域的QCD物质是由色磁单极子主导的双磁等离子体。在这个观点中，通量管由双磁流稳定，并由双磁流体力学（DMHD）描述。本文对磁通管中的耗散效应进行了经典计算。这种效应与物质的再散射和有限导电性有关。我们推导出存在耗散时的DMHD解，并由此估计了电通量管的寿命。这项研究的结论是，一个经典的处理导致太短的寿命的通量管。

英文摘要：

Electric flux tubes are a well known attribute of the QCD vacuum in which they manifest confinement of electric color charges. Recently, experimental results have appeared suggesting that not only those objects persist at temperatures $T\approx T_c$ near the QCD phase transitions, but their decay is suppressed and the resulting clusters in AuAu collisions are larger than in pp (i.e. in vacuum). This correlates well with recent theoretical scenarios that view the QCD matter in the $T\approx T_{c}$ region as a dual-magnetic plasma dominated by color-magnetic monopoles. In this view the flux tubes are stabilized by dual-magnetic currents and are described by dual-magnetohydrodynamics (DMHD). In this paper we calculate classically the dissipative effects in the flux tube. Such effects are associated with rescattering and finite conductivity of the matter. We derive the DMHD solution in the presence of dissipation and then estimate the lifetime of the electric flux tubes. The conclusion of this study is that a classical treatment leads to too short of a lifetime for the flux tubes.

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