论文标题
Skyrme RPA用于核共振：磁性模式的麻烦
Skyrme RPA for nuclear resonances: trouble with magnetic modes
论文作者
论文摘要
我们讨论基于Skyrme能量密度函数的自洽计算中出现的核中电磁和磁激发之间的主要差异。分析工具是批量属性的Landau-Migdal参数，RPA的共振模式为$^{208} $ pb作为有限核的代表。我们表明，在Landau-Migdal理论中众所周知，有效质量与有效粒子孔相互作用之间的关系解释了这种方法中电跃迁的自洽计算的成功。但是，这种效果在磁性案例中并不自动存在。这需要在自旋通道中进一步开发Skyrme功能。
We discuss major differences between electric and magnetic excitations in nuclei appearing in self-consistent calculation based on Skyrme energy-density functionals. Tools of analysis are Landau-Migdal parameters for bulk properties and RPA for resonance modes of $^{208}$Pb as representative of finite nuclei. We show that the relation between the effective mass and the effective particle-hole interaction, well known in the Landau-Migdal theory, explains the success of self-consistent calculations of electric transitions in such approaches. This effect, however, does not automatically exist in the magnetic case. This calls for further developments of the Skyrme functional in the spin channel.
