Research in Nuclear Theory and Related Topics

近年来的研究重点是建立新的模型，并利用现有的物理上合理和计算上可行的模型来关联中重核结构的各个方面。其目的是全面和深刻地了解氮- z景观区域的核，这对我们理解宇宙的演化至关重要，但迄今为止，地球上的实验室尚未证明这一点。常见的思路是从基本的壳层模型，即核结构物理学中的“标准模型”出发。具体研究方向包括：开发Drexel University shell - model （DUSM）代码作为shell模型的数值实现；费米子动力学对称模型（FDSM）用于研究大原子核的集体方面；旨在实现低、高自旋光谱学“大统一”的伪自旋伪轨道模型投影壳层模型，以及广义对壳层模型，以增强我们对高自旋物理和原子核集体行为的理解；以及平均场Hartree-Fock方法，该方法处理原子核的全局性质。＊＊＊

9501520 Feng The primary focus of the research over the past few years has been to develop new models and to utilize existing models which are physically reasonable and computationally feasible in order to correlate the multi-faceted aspects of the structure of medium and heavy nuclei. The aim is to gain a comprehensive and profound understanding of nuclei in regions of the N-Z landscape which are vital to our understanding the evolution of the universe and which have yet proven inaccessible to laboratories on earth. The common thread is to build from the fundamental shell model, the "standard model" in nuclear structure physics. Specific research directions include the development of the Drexel University Shell-Model (DUSM) code as a numerical implementation of the shell model; the Fermion Dynamical Symmetry Model (FDSM) to study the collective aspects of larger nuclei; a pseudo-spin pseudo-orbit model which aims at a "grand unification" of low- and high-spin spectroscopy; the projected shell-model, as well as a generalized pair shell-model, to enhance our understanding of high-spin physics and the collective behavior of nuclei; and the mean- field Hartree-Fock approach, which addresses the global properties of nuclei. ***