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arXiv 1706.09191nucl-thastro-ph.HE
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夸克-强子手征宇称偶重态模型在中子星物质中的应用

The application of the Quark-Hadron Chiral Parity-Doublet Model to neutron star matter

A. Mukherjee, S. Schramm, J. Steinheimer, V. Dexheimer

摘要:

本文应用夸克-强子手征宇称偶重态模型(Q $χ$ P)计算了存在解禁闭相变时致密星的性质。在这个模型中,核物质性质的一致描述,手征对称性恢复,以及从强子到夸克和胶子自由度的过渡是可能的,在一个统一的方法。我们发现,所得到的状态方程与最近微扰量子色动力学(QCD)的结果是一致的,并能够容纳大质量和小中子星的观测约束。此外,我们表明,状态方程的重要功能,如对称性能量和它的斜率,以及在他们的观测限制。

英文摘要:

The Quark-Hadron Chiral Parity-Doublet model (Q$χ$P) is applied to calculate compact star properties in the presence of a deconfinement phase transition. Within this model, a consistent description of nuclear matter properties, chiral symmetry restoration, and a transition from hadronic to quark and gluonic degrees of freedom is possible within one unified approach. We find that the equation of state obtained is consistent with recent perturbative quantum chromodynamics (QCD) results and is able to accommodate observational constraints of massive and small neutron stars. Furthermore, we show that important features of the equation of state, such as the symmetry energy and its slope, are well within their observational constraints.

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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