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arXiv 1401.8095hep-lathep-th
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双色淬火QCD轴向磁效应的温度依赖性

Temperature dependence of the axial magnetic effect in two-color quenched QCD

V. Braguta, M. N. Chernodub, V. A. Goy, K. Landsteiner, A. V. Molochkov, M. I. Polikarpov

摘要:

轴向磁效应是指在轴向(手征)磁场方向上手征费米子的平衡无耗散能流的产生。在有限温度下,无耗散的能量转移可以在没有任何化学势的情况下实现。我们数值研究了淬火SU(2)格点规范理论中轴向磁效应的温度行为。我们表明,在禁闭(强子)阶段的效果是不存在的。在解除禁闭过渡区中,电导率迅速增加,在深度解除禁闭(等离子体)阶段达到渐近$T^2$行为。除了一个整体的比例因子,我们的研究结果定性地同意作为温度和轴向磁场强度的函数的能量流的行为的理论预测。

英文摘要:

The Axial Magnetic Effect is the generation of an equilibrium dissipationless energy flow of chiral fermions in the direction of the axial (chiral) magnetic field. At finite temperature the dissipationless energy transfer may be realized in the absence of any chemical potentials. We numerically study the temperature behavior of the Axial Magnetic Effect in quenched SU(2) lattice gauge theory. We show that in the confinement (hadron) phase the effect is absent. In the deconfinement transition region the conductivity quickly increases, reaching the asymptotic $T^2$ behavior in a deep deconfinement (plasma) phase. Apart from an overall proportionality factor, our results qualitatively agree with theoretical predictions for the behavior of the energy flow as a function of temperature and strength of the axial magnetic field.

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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