摘要
利用Ｈａｒｔｒｅｅ－Ｆｏｃｋ理论，基于扩展的Ｓｋｙｒｍｅ有效相互作用，在抛物线近似下，解析地给出了零温度时对称能的密度相关形式．同时讨论了对称能的温度相关性，发现对称能随着温度的升高而减小，在温度较低时，对称能强度系数与温度的关系能较好地符合抛物线规律．
Within the framework of Hartree-Fock theory by using the extendedSkyrme effective interaction, the density dependence of symmetry energy is derivedanalytically with parabolic approximation at zero-crmperature. It is shown that theparabolic approximahon is applicable within a rather large density region and almostfor all relative neutron excess. The symmetry energy depends on density terms of p2/3,P, Py+1, p 5/3 and p5+3/. At finite temperatures, the Parabolic approximahon betweensymmetry energy and relative neutron excess is still appropriate. In addition, thetemperature dependence of symmeny energy is predicted. It is found that thesymmetry energy decrease with increment of tempendre and the Parabolic lawbetween symmetry energy and temperatUre is satisfied at lower temperatures.
出处
《高能物理与核物理》
CSCD
北大核心
1999年第12期1197-1202,共6页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金!19609033
19875068和19847002
中国科学院基金
国家教委基金
