Institute of Theoretical Physics

Key Laboratory of Theoretical Physics

  Chinese Academy of Sciences

Seminar

Title

题目

Speaker

报告人

Dr. GuanJian Fu (傅冠健)

Affiliation

所在单位

School of Physics Science and Engineering, Tongji University (同济大学物理科学与工程学院)

Date

日期

10:00, Sep 1 (Thursday), 2016

Venue

地点

ITP Conference Hall 322 /理论物理所322报告厅
　

Abstract

摘要

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 in finite nuclei. 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 shall clarify what we mean by “nucleon pairing”. 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.

Contact person

所内联系人