Electrical Conductivity of the Quark-Gluon Plasma Across the Deconfinement Transition
Electrical Conductivity of the Quark-Gluon Plasma Across the Deconfinement Transition
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DOI：
10.1103/physrevlett.111.172001
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发表时间：
2013-10-23
影响因子：
8.6
通讯作者：
Skullerud, Jon-Ivar
中科院分区：
文献类型：
--
作者：
Amato, Alessandro;Aarts, Gert;Skullerud, Jon-Ivar
本文用格点法计算了非零温度下具有2 + 1动力学味的QCD等离子体的电导率σ。我们采用各向异性晶格上的守恒晶格电流，使用蝌蚪改进的三叶草行动和研究的电导率在很宽的温度范围内的行为，低于和高于退澄清过渡。电导率提取的频谱功能分析使用最大熵方法，并讨论其系统学。我们发现，增加sigma/T的过渡。
A lattice calculation is presented for the electrical conductivity sigma of the QCD plasma with 2 + 1 dynamical flavors at nonzero temperature. We employ the conserved lattice current on anisotropic lattices using a tadpole-improved clover action and study the behavior of the conductivity over a wide range of temperatures, both below and above the deconfining transition. The conductivity is extracted from a spectral-function analysis using the maximal entropy method, and a discussion of its systematics is provided. We find an increase of sigma/T across the transition.