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arXiv 2002.01217hep-phastro-ph.HEnucl-th
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QCD在零重子密度和重子密度下的物态方程:手征平均场模型

QCD equation of state at vanishing and high baryon density: Chiral Mean Field model

Anton Motornenko, Jan Steinheimer, Volodymyr Vovchenko, Stefan Schramm, Horst Stoecker

摘要:

利用手征SU(3)味宇称偶Polyakov圈夸克强子平均场模型CMF研究了高温高密度QCD物质的热力学性质。CMF模型提供了一个适当的描述格点量子色动力学数据,重离子物理,静态中子星。讨论了恒压线随重子密度增加的行为。在$μ_B/T\approx3$的压力行为的快速变化表明重子在这个区域的热力学性质的强贡献。这个区域的位置非常接近QCD压力的泰勒展开的收敛半径。本文还讨论了介子和不稳定强子在强相互作用物质流体力学膨胀中的作用。

英文摘要:

The thermodynamic properties of high temperature and high density QCD-matter are studied using the Chiral SU(3)-flavor parity-doublet Polyakov-loop quark-hadron mean-field model, CMF. The CMF model provides a proper description of lattice QCD data, heavy-ions physics, and static neutron stars. The behavior of lines of constant pressure with increase of baryon density is discussed. The rapid change of pressure behavior at $μ_B/T\approx3$ suggests a strong contribution of baryons to thermodynamic properties at this region. The position of this region is very close to the radius of convergence for a Taylor expansion of the QCD pressure. The role of mesons and unstable hadrons in the hydrodynamic expansion of strongly interacting matter is also discussed.

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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