论文标题
面对一组Skyrme和$χ_{eft} $预测中子星星的外壳
Confronting a set of Skyrme and $χ_{EFT}$ predictions for the crust of neutron stars
论文作者
论文摘要
随着中子星观测数据的提高精度，有必要在统一方法中始终如一地计算地壳和核心的新状态方程。为此，我们使用可压缩的液滴模型描述了中子恒星的地壳中的不均匀物质，其中散装和中子流体项与描述核心中存在统一物质的模型给出了中子流体项。然后，我们为冷催化的中子星建立了一组15个统一的状态方程式，建立在核互动的逼真模型上，这属于两个主要群体：第一个群体源自现象学天际的相互作用，第二个属于$χ_{eft} $ hamiltonians。这些模型预测的对抗使我们能够研究地壳特性的模型依赖性，特别是在低密度下中子物质的影响。新的统一状态方程式在撰写库中可用。
With the improved accuracy of neutron star observational data, it is necessary to derive new equation of state where the crust and the core are consistently calculated within a unified approach. For this purpose we describe non-uniform matter in the crust of neutron stars employing a compressible liquid-drop model, where the bulk and the neutron fluid terms are given from the same model as the one describing uniform matter present in the core. We then generate a set of fifteen unified equations of state for cold catalyzed neutron stars built on realistic modelings of the nuclear interaction, which belongs to two main groups: the first one derives from the phenomenological Skyrme interaction and the second one from $χ_{EFT}$ Hamiltonians. The confrontation of these model predictions allows us to investigate the model dependence for the crust properties, and in particular the effect of neutron matter at low density. The new set of unified equations of state is available at the CompOSE repository.
