滴线区原子核的共振与连续谱

滴线区核的最大特点是弱束缚，共振与连续谱是其主要特征。随着新一代放射性核束装置的建成，越来越多的滴线区核将被合成。弱束缚特性对理论计算的精度和可靠性提出了更高的要求，共振和连续谱影响应该考虑，这给理论计算带来了严峻的挑战。弱束缚核是一个开放的量子体系，可能涌现一些新现象、新结构、新机制。基于这些因素，我们将发展理论模型，从不同角度计算研究滴线区核的结构与衰变，主要包括：1）从现实核力出发，发展Berggren空间的ab initio方法，包括：Gamow壳模型、Gamow蒙卡、IM-SRG，描述滴线区核的共振态与连续谱；2）由于三体力在滴线区的重要性，我们将发展三体力计算，使我们的ab initio计算包含三体力；3）作为ab-initio计算的补充，我们将进一步发展连续谱能量密度泛函理论，优化连续谱的处理，扩展到重核区的计算。

The most prominent feature of nuclei along driplines is weakly bound. Resonance and continuum are their main characteristics. With the construction of a new generation of radioactive ion beam facilities, more and more exotic nuclei in dripline regions will be created in experiment. Due to the weakly bound property, the accuracy and reliability of theoretical calculations are more and more demanding. In particular, the effects of resonance and continuum should be considered, which poses a serious challenge to theoretical calculations. Weakly bound nuclei are open quantum systems, and some new phenomena, new structures and new mechanisms may emerge. Considering these factors, we will develop theoretical models to calculate and study the structures and decays of dripline nuclei, which include: 1) starting from realistic nuclear forces, we will develop ab-initio methods based on the Berggren basis (e.g., Gamow shell model, Gamow Monte Carlo and Gamow IM-SRG) to describe resonance and continuum in dripline nuclei; 2) due to the special role of three-body force in dripline regions, we will study three-body forces and make model calculations include three-body forces; 3) as an extra method, we will also develop the continuum energy density functional theory, and further optimize the treatment of the continuum, with extending calculations to heavy dripline nuclei.