Superfluidity in neutron matter and symmetric nuclear matter and the effect of a microscopic three-body force

摘要：

The neutron 3PF2 pairing gap in pure neutron matter,neutron 3PF2 gap and neutron-proton 3SD1 gap in symmetric nuclear matter have been studied by using the Brueckner-Hartree-Fock(BHF) approach and the BCS theory.We have concentrated on investigating and discussing the three-body force effect on the nucleon superfluidity.The calculated results indicate that the three-body force enhances remarkably the 3PF2 superfluidity in neutron matter.It also enhances the 3PF2 superfluidity in symmetric nuclear matter and its effect increases monotonically as the Fermi-momentum KF increases,whereas the three-body force is shown to influence only weakly the neutron-proton 3SD1 gap in symmetric nuclear matter.

关键词： neutron matter symmetric nuclear matter superfluidity three-body force BCS theory BHF approach

作者: CUI Chang-Xi(崔常喜) ZUO Wei(左维)

作者单位: Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China;Graduate University of Chinese Academy of Sciences,Beijing 100049,China

会议类型: 国际会议

会议名称: The 13th National Nuclear Physics Conference of China(第十三届全国核物理大会暨第八届会员代表大会)

会议地点: 兰州

会议语种:英文

页码: 73-76

在线出版日期: 2007-08-22（万方平台首次上网日期，不代表论文的发表时间）