应稀有同位素前沿科学中心、兰州大学核科学与技术学院邀请，上海交通大学孙杨教授将于2023年7月6日来校进行学术交流并作报告。

       报告题目：Toward understanding of a complete Gamow-Teller spectrum

       报告时间：2023年7月6日（星期四）15: 00    

       报告地点：兰州大学二分部现物楼305室

       欢迎广大师生参加！

【报告摘要】

       Gamow-Teller (GT) transitions in nuclei are sensitive to shell structure, deformation, and effective residual interactions. At the spherical limit, the number of configurations that can contribute to GT transitions is rather limited. This is because of the GT operator, i.e., the spin-isospin (στ) operator having no spatial components. For deformed nuclei, however, different density distributions modify the spatial part of wavefunctions significantly, and a GT spectrum become much more complicated. Due mainly to the lack of systematical experimental data, we do not have a complete image of GT spectra for nuclei in different mass regions (i.e. spherical, transitional, deformed). What does a complete GT spectrum look like, and are additional selection rules required? By using the Projected Shell Model calculation as an example, this seminar intends to discuss these questions.

【报告人简介】

       上海交通大学物理与天文学院特聘教授。1985 年获阿登纳基金会资助赴德国留学, 1991 年慕尼黑工业大学理论核物理专业获博士学位；其后多年在欧洲和美国工作, 包括在美国橡树岭国家实验室、田纳西大学及圣母大学，2007年起受聘于上海交通大学。研究领域涉及原子核结构、核天体物理、弱相互作用下的核过程、强关联多体理论等。合作发表学术论文300余篇，著有《天文学教程（上、下册）》(上海交通大学出版社)、《Symmetry, Broken Symmetry, and Topology in Modern Physics》(Cambridge University Press).

                                                                                                                                                                         稀有同位素前沿科学中心

核科学与技术学院

2023年7月3日