报告题目：Isovector and isoscalar pairing in low-lying states of atomic nuclei 

　　报告人：  傅冠健  博士 

　　同济大学物理科学与工程学院 

　　时间：  2016年7月11日（星期一） 下午4：00  

　　地点：  近代物理所工艺楼6楼会议室 

　　傅冠健简介 

　　傅冠健，男，1988年2月生，同济大学助理教授。2015年毕业于上海交通大学物理与天文系物理学专业，获博士学位。主要从事原子核结构理论方面的研究，具体的研究内容为：原子核低激发态的质子—中子配对；用局域质量关系描述和预言原子核质量。曾获得中国核物理学会颁发的“胡济民教育科学奖”。 

　　报告摘要:   

　　Isovector and isoscalar pairing in low-lying states of atomic nuclei 　　  

　　The pairing correlation is very important in nuclear physics. Isovector nucleon pairs with spin J = 0 are found to be dominant ingredients in low-lying states of semimagic nuclei. The isovector J = 0 pairing correlation plays a key role in nuclear infinite matter. These facts are the consequences of the strong isovector J = 0 pairing interaction between nucleons. On the other hand, Isoscalar J = 1 and J = 2j (for a large-j orbit) pairing interactions are strong. Therefore isoscalar deuton-like J = 1 pairing correlation and isoscalar spin-aligned J = 2j pairing correlation may be very important in low-lying states of N = Z nuclei.The question is whether or not a pairing correlated state (or a pair-condensation state) can be formed. In this talk, I will clarify what we mean by “nucleon pairing” and show the theoretical background to the relevant discussion. I will show that there has been no conclusive evidence for strong isoscalar J = 1 pairing correlation, and that low-lying states of N = Z even-even nuclei are well described by both isovector pair approximation and  isoscalar pair approximation.