arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0910.5628hep-phhep-lathep-thnucl-th
收藏

(2+1)-味QCD的热力学:用晶格研究对抗模型

Thermodynamics of (2+1)-flavor QCD: Confronting Models with Lattice Studies

Bernd-Jochen Schaefer, Mathias Wagner, Jochen Wambach

摘要:

介绍了Polyakov-quark-meson(PQM)模型,该模型结合了强相互作用物质的手征性和去禁闭性。分析了该模型的手征和退禁闭相变及其有限温度下的热力学性质。三种不同形式的有效Polyakov回路潜力被认为是。(2+1)味模型的研究结果与RBC-Bielefeld、HotQCD和Wuppertal-Budapest合作的QCD晶格模拟结果进行了比较。考虑了晶格计算中使用的较重夸克质量的影响。在过渡区,PQM模型的体相热力学结果与晶格数据吻合较好。

英文摘要:

The Polyakov-quark-meson (PQM) model, which combines chiral as well as deconfinement aspects of strongly interacting matter is introduced for three light quark flavors. An analysis of the chiral and deconfinement phase transition of the model and its thermodynamics at finite temperatures is given. Three different forms of the effective Polyakov loop potential are considered. The findings of the (2+1)-flavor model investigations are confronted to corresponding recent QCD lattice simulations of the RBC-Bielefeld, HotQCD and Wuppertal-Budapest collaborations. The influence of the heavier quark masses, which are used in the lattice calculations, is taken into account. In the transition region the bulk thermodynamics of the PQM model agrees well with the lattice data.

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。

↑