SU（3）宇称偶线模型中的混合星
Hybrid Stars in an SU(3) Parity Doublet Model
摘要：
我们应用扩展的SU（3）宇称模型，包括夸克自由度，来研究中子星。该模型成功地再现了QCD的主要热力学特征，使我们能够描述致密物质的组成。在恒星内部实现了手征对称性恢复，重子的手征伙伴出现，它们的质量变得简并。此外，夸克的自由度出现在一个过渡到一个解除限制的状态。通过对中子星的宏观性质的研究，我们发现，观测约束条件，如质量和热演化，是可以满足的，并可以作出新的预测。
英文摘要：
We apply an extended version of the SU(3) parity model, containing quark degrees of freedom, to study neutron stars. The model successfully reproduces the main thermodynamic features of QCD which allows us to describe the composition of dense matter. Chiral symmetry restoration is realized inside the star and the chiral partners of the baryons appear, their masses becoming degenerate. Furthermore, quark degrees of freedom appear in a transition to a deconfined state. Performing an investigation of the macroscopic properties of neutron stars, we show that observational constraints, like mass and thermal evolution, are satisfied and new predictions can be made.
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