超子-核子相互作用是决定超核和中子星属性的关键因素之一，对其进行深入研究具有重要科学意义。超核为研究超子-核子相互作用提供天然平台，已经成为原子核物理领域的重要分支。本项目将从协变密度泛函理论出发，发展适用于超核谱学结构研究的相对论模型。基于该理论模型，通过拟合超子结合能、超核低激发态的能量以及跃迁强度，确定能量泛函中的超子-核子有效相互作用参数以及探讨超子-核子三体有效相互作用的效应。采用由此确定的超子-核子相互作用，求解包含超子自由度的核物质状态方程，并应用于中子星结构的研究。最后，通过结合已有的超核和中子星的数据，共同限制超子-核子有效相互作用参数的取值范围，探讨中子星结构中“超子危机”问题。

It is highly important to study hyperon-nucleon interaction that is one of the key factors to determine both the properties of hypernuclei and neutron stars. Hypernuclei provide a natural platform to investigate the hyperon-nucleon interaction and the study of which has become an important branch of nuclear physics. In this project, we are going to establish a relativistic hypernuclear model starting from covariant density functional theory. With this model, we will derive the hyperon-nucleon effective interaction in the energy functional by fitting the parameters to hyperon binding energies and spectroscopic data of hypernuclear low-lying states, and will discuss the effect of three-body hyperon-nucleon interaction. Subsequently, we will calculate the equation of state of nuclear matter with hyperon degree of freedom by using the fitted hyperon-nucleon interaction and then study the structure of neutron stars. Eventually, we will constrain the range of effective hyperon-nucleon interaction parameters by combining available data of both hypernuclei and neutron stars, shedding light on the “hyperon puzzle” in neutron stars.