报告题目：Resonances and halos in exotic nuclei in continuum theory with Green's function method

报告人：孙亭亭，博士，郑州大学

报告时间：2022年7月6日10:00

报告地点：物理楼302（腾讯会议号：300-236-956）

报告人简介

孙亭亭，郑州大学副教授、青年拔尖人才，2009年本科毕业于西南大学，2015年博士毕业于北京大学，随后入职郑州大学，2015年—2016年在日本理化学研究所从事博士后研究。主要研究方向包括奇特原子核和超核，到目前为止，以第一作者或通讯作者在Science China: Physics, Mechanics & Astronomy, Physics Letter B，Physical Review C等期刊上发表论文25篇，主持国家自然科学基金大科学装置联合基金和青年基金、河南省自然科学基金面上等项目共7项。

报告简介

The exotic nuclei with extreme N/Z ratios has become one of the most important frontiers. Many novel phenomena such as halos, new magic number and new excitation mode have been found. Theoretically, to describe those exotic nuclei, one has to deal with pairing correlation and continuum properly. Especially, the single-particle resonant states in the continuum are found very essential for the structures and features of exotic nuclei. Green's function method is one of the most effective tools for describing the continuum.

In this report, firstly, I will talk the single-particle resonant states, both in the spherical and deformed nuclei, in the description of the Green's function relativistic mean field (GF-RMF) theory, where how to extract the energies and widths by Green's function method will be shown, the Nilsson levels for bound and resonant orbitals in the p-wave halo candidate nucleus 37Mg will be given and the mechanism of its deformed halo will be analyzed; Secondly, I will talk the giant halos in the neutron-rich Zr isotopes by the Green's function relativistic Hartree-Bogoliubov (GF-RHB) theory, in which the extended density distribution, quasi-particle spectrum, as well as the energies and widths of the resonant states playing important roles for giant halos will be shown.

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