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arXiv 1401.1735hep-phhep-thnucl-th
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QCD的相结构和热力学研究

Exploring the Phase Structure and Thermodynamics of QCD

Tina K. Herbst, Mario Mitter, Jan M. Pawlowski, Bernd-Jochen Schaefer, Rainer Stiele

摘要:

我们提出了一个Polyakov圈扩展的夸克介子模型,其中考虑了物质和胶涨落,参见。[1]的文件。后者包括通过Polyakov回路潜力。通常,这种胶势仅基于杨-米尔斯晶格数据。我们证明了[2]中提出的非猝灭效应的参数化,以及通过泛函重整化群[3,4]包含的波动,解释了相关的动力学。这是证明了序参量和热力学观测值的比较,最近的晶格结果在消失的化学势,我们发现非常好的协议。

英文摘要:

We put forward a Polyakov-loop extended quark meson model, where matter as well as glue fluctuations are taken into account, cf. [1]. The latter are included via a Polyakov-loop potential. Usually such a glue potential is based on Yang-Mills lattice data only. We show that a parametrisation of unquenching effects as proposed in [2], together with the inclusion of fluctuations via the functional renormalisation group [3,4], accounts for the relevant dynamics. This is demonstrated by a comparison of order parameters and thermodynamic observables to recent lattice results at vanishing chemical potential, where we find very good agreement.

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