Nuclear matter incompressibility coefficient in relativistic and nonrelativistic microscopic models
Nuclear matter incompressibility coefficient in relativistic and nonrelativistic microscopic models
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DOI：
10.1103/physrevc.68.031304
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发表时间：
2003-09-01
影响因子：
3.1
通讯作者：
Kim Au, V
中科院分区：
文献类型：
--
作者：
Agrawal, BK;Shlomo, S;Kim Au, V
本文系统地分析了基于非相对论性和相对论性平均场（RMF）的随机相位近似（RPA）计算等标量巨单极子共振质心能量E-0得到的核物质不可压缩系数K-nm值相差约20%的结论。为了与基于RMF的RPA计算进行适当的比较，我们采用与确定RMF模型中使用的有效拉格朗日量的NL3参数集相同的程序，获得了非相对论模型中使用的Skyrme力的参数。我们的研究表明，相对论和非相对论模型预测的K-nm值之间的差异显著小于20%。
We systematically analyze the recent claim that nonrelativistic and relativistic mean field (RMF) based random phase approximation (RPA) calculations for the centroid energy E-0 of the isoscalar giant monopole resonance yield for the nuclear matter incompressibility coefficient K-nm values which differ by about 20%. For an appropriate comparison with the RMF based RPA calculations, we obtain the parameters of the Skyrme force used in the nonrelativistic model by adopting the same procedure as employed in the determination of the NL3 parameter set of the effective Lagrangian used in the RMF model. Our investigation suggests that the discrepancy between the values of K-nm predicted by the relativistic and nonrelativistic models is significantly less than 20%.