论文标题
向量自我交织在中子星特性中的作用
Role of vector self-interaction in Neutron Star properties
论文作者
论文摘要
先前的研究声称，某些核饱和参数和中子星可观测值之间存在相关性，例如对称能量的斜率和140万美元_ {\ odot} $中子星的半径。但是，尚不清楚这种相关性是物理还是虚假的，因为在所有状态模型的所有方程中都没有普遍观察到它们。在这项工作中，我们探讨了向量自我交互在相对论平均场模型框架中的作用及其在管理可观察到的恒星特性及其与核参数的相关性中的作用。我们确认，该术语的效果不仅是控制状态方程的高密度特性，而且还控制了这种相关性。我们还使用最近的天体物理数据对矢量自我互动的最大强度限制了限制。
Previous studies have claimed that there exist correlations among certain nuclear saturation parameters and neutron star observables, such as the slope of the symmetry energy and the radius of a $1.4M_{\odot}$ neutron star. However, it is not clear whether such correlations are physical or spurious, as they are not observed universally for all equation of state models. In this work, we probe the role of vector self-interaction within the framework of the Relativistic Mean Field model and its role in governing the observable stellar properties and their correlations with nuclear parameters. We confirm that the effect of this term is not only to control the high density properties of the equation of state but also to govern such correlations. We also impose a limit on the maximum strength of the vector self-interaction using recent astrophysical data.
