报告题目：Covariant Density Functional Theory with Localized Exchange Terms

报告人：赵强 博士，韩国基础科学研究院

报告时间：2022年4月12日，19:00-21:00

报告地点：线上（腾讯会议号：300-909-260）

报告人简介：

　　赵强，2019年获兰州大学博士学位，2015-2017年在法国里昂一大联合培养；2019-2021年在北京大学从事博士后研究；2021年至今，在韩国基础科学研究院奇特核研究中心从事博士后研究。主要从事原子核协变密度泛函理论相关研究，关注于协变密度泛函理论中交换项的效应及其处理，在PLB、PRC等SCI期刊上发表论文多篇。

报告简介：

　　The exchange terms in the nuclear covariant density functional theory (CDFT) can play an important role in the descriptions of nuclear structure. However, they are usually neglected in most of the applications for simplicity. Here we propose a new density-dependent point-coupling CDF PC-PKF with localized exchange terms. By using the Fierz transformation, the exchange terms can be expressed as the superpositions of the Hartree terms. The new density functional PC-PKF can eliminate the spurious shell closures at Z = 58 and 92, which exist commonly in many covariant density functionals without exchange terms. Moreover, the Gamow-Teller resonances are nicely reproduced without any adjustable parameters, and this demonstrates that a self-consistent description for the Gamow-Teller resonances can be achieved with the localized exchange terms in the PC-PKF.

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