论文标题
中子星内的声音和夸克限制的速度
Speed of sound and quark confinement inside neutron stars
论文作者
论文摘要
对高质量中子星（NSS）的几种观察以及对二进制中子星合并GW170817的首次历史检测，对冷且密集物质的状态方程（EOS）方程式产生了严格的约束。最近的研究表明，为了同时容纳$ 2M_ \ odot $ ns和紧凑性的上限，压力必须随着密度而迅速增加，相应的声音速度可能超过保形极限。在这项工作中，我们对Handron-Quark物质（Hybrid Quark-Meson-Nucleon（QMN）模型）进行了统一的描述，以在NS条件下研究EOS。我们表明，模型的动力限制机制在解释观察到的NSS的特性中起着重要作用。
Several observations of high-mass neutron stars (NSs), as well as the first historic detection of the binary neutron star merger GW170817, have delivered stringent constraints on the equation of state (EoS) of cold and dense matter. Recent studies suggest that, in order to simultaneously accommodate a $2M_\odot$ NS and the upper limit on the compactness, the pressure has to swiftly increase with density and the corresponding speed of sound likely exceeds the conformal limit. In this work, we employ a unified description of hadron-quark matter, the hybrid quark-meson-nucleon (QMN) model, to investigate the EoS under NS conditions. We show that the dynamical confining mechanism of the model plays an important role in explaining the observed properties of NSs.
