報(bào)告題目：Isovector and isoscalar pairing in low-lying states of atomic nuclei 

　　報(bào)告人：  傅冠健  博士 

　　同濟(jì)大學(xué)物理科學(xué)與工程學(xué)院 

　　時(shí)間：  2016年7月11日（星期一） 下午4：00  

　　地點(diǎn)：  近代物理所工藝樓6樓會(huì)議室 

　　傅冠健簡(jiǎn)介 

　　傅冠健，男，1988年2月生，同濟(jì)大學(xué)助理教授。2015年畢業(yè)于上海交通大學(xué)物理與天文系物理學(xué)專業(yè)，獲博士學(xué)位。主要從事原子核結(jié)構(gòu)理論方面的研究，具體的研究?jī)?nèi)容為：原子核低激發(fā)態(tài)的質(zhì)子—中子配對(duì)；用局域質(zhì)量關(guān)系描述和預(yù)言原子核質(zhì)量。曾獲得中國(guó)核物理學(xué)會(huì)頒發(fā)的“胡濟(jì)民教育科學(xué)獎(jiǎng)”。 

　　報(bào)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.