報告題目：Isovector and isoscalar pairing in low-lying states of atomic nuclei 

　　報告人：  傅冠健  博士 

　　同濟大學物理科學與工程學院 

　　時間：  2016年7月11日（星期一） 下午4：00  

　　地點：  近代物理所工藝樓6樓會議室 

　　傅冠健簡介 

　　傅冠健，男，1988年2月生，同濟大學助理教授。2015年畢業(yè)于上海交通大學物理與天文系物理學專業(yè)，獲博士學位。主要從事原子核結構理論方面的研究，具體的研究內容為：原子核低激發(fā)態(tài)的質子—中子配對；用局域質量關系描述和預言原子核質量。曾獲得中國核物理學會頒發(fā)的“胡濟民教育科學獎”。 

　　報告摘要:   

　　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.