Superfluid nuclear matter in BCS theory and beyond  

作　　者：曹李刚 U. Lombardo P. Schuck 

机构地区：[1]Institute of Modern Physics, Chinese Academy of Science [2]Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator of Lanzhou [3]Laboratori Nazionali del Sud, INFN, Via Santa Sofia 62, I-95123 Catania, Ita ly [4]InstitutdePhysiqueNucléaire,UniversitéParis-Sud,F-91406OrsayCEDEX,France

出　　处：《Chinese Physics C》2009年第S1期33-36,共4页中国物理C（英文版）

基　　金：Supported by NSFC (10875150);the grant appointed to European Community Project Asia-Europe Link in Nuclear Physics and Astrophysics, CN/ASIA-LINK/008(94791)

摘　　要：Medium polarization eflects are studied for 1S0 pairing in nuclear matter within BHF approach. The screening potential is calculated in the RPA limit, suitably renormalized to cure the low density mechanical instability of nuclear matter. The self-energy corrections are consistently included resulting in a strong depletion of the Fermi surface. The self-energy effects always lead to a quenching of the gap, whereas it is almost completely compensated by the anti-screening effect in nuclear matter.Medium polarization eflects are studied for 1S0 pairing in nuclear matter within BHF approach. The screening potential is calculated in the RPA limit, suitably renormalized to cure the low density mechanical instability of nuclear matter. The self-energy corrections are consistently included resulting in a strong depletion of the Fermi surface. The self-energy effects always lead to a quenching of the gap, whereas it is almost completely compensated by the anti-screening effect in nuclear matter.

关 键 词：pairing in nuclear matter self-energy effect medium effect 

分 类 号：O571[理学—粒子物理与原子核物理]