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arXiv 0808.1127hep-lathep-ph
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有限温度下SU(2)规范理论中能量动量张量的关联函数

Correlation functions of the energy-momentum tensor in SU(2) gauge theory at finite temperature

K. Huebner, F. Karsch, C. Pica

摘要:

本文计算了(3+1)维SU(2)规范理论在退禁闭相变附近的能量动量张量的关联函数,讨论了它们在二级退禁闭相变附近的临界行为。我们证明了能量动量张量迹线的关联函数在临界点处与比热奇异性成比例地均匀发散。另一方面,压力的关联函数在临界点处保持有限。我们讨论的后果,这些研究结果的分析传输系数,特别是体积粘度,在附近的二阶相变点。

英文摘要:

We calculate correlation functions of the energy-momentum tensor in the vicinity of the deconfinement phase transition of (3+1)-dimensional SU(2) gauge theory and discuss their critical behavior in the vicinity of the second order deconfinement transition. We show that correlation functions of the trace of the energy momentum tensor diverge uniformly at the critical point in proportion to the specific heat singularity. Correlation functions of the pressure, on the other hand, stay finite at the critical point. We discuss the consequences of these findings for the analysis of transport coefficients, in particular the bulk viscosity, in the vicinity of a second order phase transition point.

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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