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首页> 外文期刊>Journal of Physics, G. Nuclear and Particle Physics: An Institute of Physics Journal >Chiral hadronic mean field model including quark degrees of freedom
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Chiral hadronic mean field model including quark degrees of freedom

机译：包括夸克自由度的手性强子平均场模型

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摘要

In an approach inspired by Polyakov loop extended Nambu-Jona-Lasinio models, we present a nonlinear hadronic SU(3) σ-ω mean field model augmented by quark degrees of freedom. By introducing the effective Polyakov loop related scalar field Φ and an associated effective potential, the model includes all known hadronic degrees of freedom at low temperatures and densities as well as a quark phase at high temperatures and densities. Hadrons in the model exhibit a finite volume in order to suppress baryons at high T and μ. This ensures that the right asymptotic degrees of freedom are attained for the description of strongly interacting matter and allows one to study the QCD phase diagram in a wide range of temperatures and chemical potentials. Therefore, with this model it is possible to study the phase transition of chiral restoration and deconfinement. In this paper, the impact of quarks on the resulting phase diagram is shown. The results from the chiral model are compared with recent data from lattice QCD.
机译：在受Polyakov环扩展Nambu-Jona-Lasinio模型启发的方法中，我们提出了夸克自由度增强的非线性强子SU（3）σ-ω平均场模型。通过引入有效的Polyakov环相关标量场Φ和相关的有效电势，该模型包括所有已知的低温和高密度强子自由度以及高温和高密度的夸克相。模型中的强子表现出有限的体积，以抑制高T和μ处的重子。这样可确保获得用于描述强相互作用物质的正确的渐近自由度，并允许人们在较宽的温度和化学势下研究QCD相图。因此，使用该模型可以研究手性还原和脱位的相变。本文显示了夸克对最终相图的影响。将手性模型的结果与点阵QCD的最新数据进行比较。

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