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arXiv 2103.07427hep-phnucl-th
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N3LO的冷夸克物质:软贡献

Cold quark matter at N3LO: soft contributions

Tyler Gorda, Aleksi Kurkela, Risto Paatelainen, Saga Säppi, Aleksi Vuorinen

摘要:

高阶微扰计算QCD中的热力学量是复杂的物理动力学屏蔽,影响软,长波长模式的系统。在这里,我们提供了详细的评估这种软贡献的次到领先阶(N3LO)的高密度,零温度夸克物质(QM)的压力,补充我们在arXiv:2103.05658随附的文件。我们的计算需要确定的硬热回路(HTL)有效理论的压力,以充分的两个回路的顺序在零温度下,我们通过相当详细。除此之外,我们还全面讨论了QM压力的弱耦合展开的结构,并制定了一个路线图,以评估完整的N3LO结果中缺失的贡献。

英文摘要:

High-order perturbative calculations for thermodynamic quantities in QCD are complicated by the physics of dynamical screening that affects the soft, long-wavelength modes of the system. Here, we provide details for the evaluation of this soft contribution to the next-to-next-to-next-to-leading order (N3LO) pressure of high-density, zero-temperature quark matter (QM), complementing our accompanying paper in arXiv:2103.05658. Our calculation requires the determination of the pressure of the hard-thermal-loop (HTL) effective theory to full two-loop order at zero temperature, which we go through in considerable detail. In addition to this, we comprehensively discuss the structure of the weak-coupling expansion of the QM pressure, and lay out a roadmap towards the evaluation of the contributions missing from a full N3LO result for this quantity.

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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