论文标题
从有限核到中子星：高阶密度在有效力中的基本作用
From finite nuclei to neutron stars : the essential role of high-order density dependence in effective forces
论文作者
论文摘要
对有限核和中子星状态方程的统一描述提出了一个主要的挑战和理解核相互作用的机会。由Lee-huang-yang-yang-yang formula of Hard-sphere气体的公式启发，我们开发了有效的核相互作用，并具有其他高阶密度术语。所折叠的Sly4 $ {'} $力可以改善对有限核的描述，但略微降低了中子星的半径1.4太阳能质量。我们发现，具有更高级密度依赖性的扩展SLY4力可以正确描述有限核和GW170817 BIRAL NEATMON中子星星的属性。这表明高级密度依赖性在超高密度上的重要作用。我们的工作为中子恒星提供了一个统一和预测的模型，以及有效互动的未来发展的新见解。
A unified description of finite nuclei and equation of state of neutron stars present a major challenge as well as opportunities for understandings of nuclear interactions.Inspired by the Lee-Huang-Yang formula of hard-sphere gases, we developed effective nuclear interactions with an additional high-order density dependent term.The original Skyrme force SLy4 is widely used in studies of neutron stars but is not satisfied for global descriptions of finite nuclei. The refitted SLy4${'}$ force can improve descriptions of finite nuclei but slightly reduces the radius of neutron star of 1.4 solar mass.We found that the extended SLy4 force with a higher-order density dependence can properly describe properties of both finite nuclei and GW170817 binary neutron stars, including the mass-radius relation and the tidal deformability. This demonstrated the essential role of high-order density dependence at ultrahigh densities. Our work provides a unified and predictive model for neutron stars, as well as new insights for the future development of effective interactions.
