Time-dependent Relativistic Mean-field Theory and Random Phase Approximation  

作　　者：P.Ring D.Vretenar A.Wandelt NguyenVanGiai MAZhong-yu CAOLi-gang 

机构地区：[1]Physics,Physics,Physics,Institude Department,TU Munich, D-85748 Garching, Germany,Department,TU Munich, D-85748 Garching, Germany,Department,TU Munich, D-85748 Garching, Germany,Physique NuclVeaire,IN2P3-CNRS,F-91406 Orsay Cedex,France

出　　处：《Annual Report of China Institute of Atomic Energy》2001年第0期27-27,共1页中国原子能科学研究院年报（英文版）

基　　金：Partly supported by the National Natural Science Foundation of China(No.10075080,19847002,19835010);Major State Basic Research Development Program in China(G20000774)

摘　　要：The relativistic random phase approximation (RRPA) is derived from the time-dependent relativistic mean field (TD RMF) theory in the limit of small amplitude oscillations. In the no-sea approximation of the RMF theory, the RRPA configuration space includes not only the usual particle-hole ph-states, but also ah configurations, i.e. pairs formed from occupied states in the Fermi sea and empty negative-energy states in the Dirac sea. The contribution of the negative energy states to the RRPA matrices is examined in a schematic model, and the large effect of Dirac sea states on isoscalar strength distributions is illustrated for the giant monopole resonance in 116Sn. It is shown

关 键 词：RELATIVISTIC DIRAC FERMI Approximation illustrated MESON SCHEMATIC occupied matrices usual 

分 类 号：O572.3[理学—粒子物理与原子核物理]