Research in Nuclear Theory and Related Topics

小行星9501520 在过去几年中，研究的主要重点是开发新的模型，并利用现有的模型，这些模型在物理上是合理的，在计算上是可行的，以关联的多方面的中重核的结构。 其目的是获得一个全面和深刻的了解核在区域的N-Z景观，这是至关重要的，我们了解宇宙的演变，但尚未证明无法在地球上的实验室。 共同的思路是从基本的壳模型，即核结构物理学中的“标准模型”建立。 具体的研究方向包括开发德雷克塞尔大学壳模型（DUSM）代码，作为壳模型的数值实现;费米子动力学对称模型（FDSM），以研究较大核的集体方面;伪自旋伪轨道模型，旨在实现低自旋和高自旋光谱学的“大统一”;投影壳模型，以及广义对壳模型，以加强我们对高自旋物理和集体行为的理解的核;和平均场Hartree-Fock方法，它解决了核的整体性质。 ***

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. ***