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arXiv 1012.3377hep-phhep-latnucl-th
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QCD中间耦合热力学

QCD Thermodynamics at Intermediate Coupling

Nan Su

摘要:

已知QCD自由能的弱耦合展开为g_s^6log{g_s}级,然而,在唯象相关的温度下,得到的级数收敛性很差。在这篇论文中,我讨论了硬热环微扰理论(HTLpt),它是规范理论的微扰展开的规范不变重组。我回顾了最近的NNLO HTLpt计算QCD热力学函数。我表明,NNLO HTLpt的结果是一致的晶格数据下降到温度T~2T_c。

英文摘要:

The weak-coupling expansion of the QCD free energy is known to order g_s^6log{g_s}, however, the resulting series is poorly convergent at phenomenologically relevant temperatures. In this proceedings, I discuss hard-thermal-loop perturbation theory (HTLpt) which is a gauge-invariant reorganization of the perturbative expansion for gauge theories. I review a recent NNLO HTLpt calculation of QCD thermodynamic functions. I show that the NNLO HTLpt results are consistent with lattice data down to temperatures T~2T_c.

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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