论文标题
超元素相互作用对中子恒星特性的影响
Influence of hyperon-hyperon interaction on the properties of neutron stars
论文作者
论文摘要
在强相互作用的复合模型中研究了中子星的性质。在低至中型重型密度的制度中，采用了协变量的野蛮模型，其中包括一个由隐藏的陌生媒介介导的超元二体相互作用的独家通道，而隐藏的陌生介子介导，这反过来又通过多项式顶点与其他介体相连。新的耦合常数受现象学约束。通过使用补充载体相互作用的Nambu-Jona Lasinio模型来考虑恒星核心中的游离夸克。解元过程是通过阶段的连续共存来描述的。研究了中子星的几个结构参数，例如质量 - 拉迪乌斯关系，惯性矩，潮汐变形，以及在相对论综合近似中的非放射F和G模型的传播。该模型的预测与最近的观察数据非常吻合，特别是最大惯性质量大于两个太阳能的观测下限。
The properties of neutron stars are studied in a composite model of the strong interaction. In the regime of low to medium baryonic densities a covariant hadronic model is adopted which includes an exclusive channel for the hyperon-hyperon interaction mediated by hidden strangeness mesons, which in turn couple to other mesons through polynomial vertices. The new coupling constants are subject to phenomenological constraints. The presence of free quarks in the core of the star is considered by using the Nambu-Jona Lasinio model supplemented with a vector interaction. The deconfinement process is described by a continuous coexistence of phases. Several structure parameters of neutron stars, such as mass-radius relation, moment of inertia, tidal deformability, and the propagation of nonradial f and g-modes within the relativistic Cowling approximation are studied. The predictions of the model are in good agreement with recent observational data, in particular the maximum inertial mass is greater than the observational lower limit of two solar masses.
