Neutron-proton Pairing for Nuclear Matter within the Extended Brueckner-Hartree-Fock Approach  

基于扩展的Brueckner-Hartree-Fock方法研究核物质中的质子-中子配对能隙

作　　者：Shang Xinle Yin Peng 

机构地区：[1]不详

出　　处：《IMP & HIRFL Annual Report》2018年第1期5-6,共2页中国科学院近代物理研究所和兰州重离子研究装置年报（英文版）

基　　金：National Natural Science Foundation of China(11505241,11175219,11705240);973 Program of China(2013CB834405)。

摘　　要：We calculate the neutron-proton(np)pairing gap in the framework of the extend Bruecker-Hartree-Fock(BHF)approach in combination with the BCS theory by considering the self-energy effect,which is calculated up to the third order.The result shows that the self-energy up to the second order reduces the effective energy gap strongly while the renormalization term enhances it significantly.In addition,the effect of the three-body force(3BF)on the np pairing gap is shown to be negligible.To connect with the np pairing in finite nuclei we propose an effective density-dependent zero-range pairing force with the parameters fitting to the calculated energy gap.

关 键 词：order. HARTREE negligible 

分 类 号：O57[理学—粒子物理与原子核物理]