Comparison between microscopic and phenomenological nuclear pairing calculations  

作　　者：LOMBARDO Umberto 

机构地区：[1]Universita' di Catania [2]LNS-INFN [3]Kavli Institute for Theoretical Physics China at the Chinese Academy of Sciences

出　　处：《Science China(Physics,Mechanics & Astronomy)》2011年第2期236-239,共4页中国科学：物理学、力学、天文学（英文版）

基　　金：supported partially by the Fundamental Research Funds for the Central Universities and the National Natural Science Foundation of China (Grant Nos.10875150 and 10875157)

摘　　要：The isospin and density dependent effective pairing interaction is revisited by fitting the neutron gaps from the microscopic calculations for the neutron matter and the symmetric nuclear matter.The neutron pairing gaps for 1S0 channel for asymmetric nuclear matter are obtained from the BCS gap equation with a realistic bare nucleon-nucleon interaction in the Skyrme mean field.It is shown that the neutron gaps obtained from the new effective pairing interaction for the asymmetric nuclear matter are much improved and agree well with the microscopic results.The isospin and density dependent effective pairing interaction is revisited by fitting the neutron gaps from the microscopic calculations for the neutron matter and the symmetric nuclear matter.The neutron pairing gaps for ^1S0 channel for asymmetric nuclear matter are obtained from the BCS gap equation with a realistic bare nucleon-nucleon interaction in the Skyrme mean field.It is shown that the neutron gaps obtained from the new effective pairing interaction for the asymmetric nuclear matter are much improved and agree well with the microscopic results.

关 键 词：isospin and density dependent effective pairing interaction BHF mean field Skyrme-LNS mean field 

分 类 号：O571.5[理学—粒子物理与原子核物理]