arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1602.07518nucl-th
收藏

推广的无规相位近似在轻、中、重质量核巨共振中的应用

Application of an Extended Random Phase Approximation on Giant Resonances in Light, Medium and Heavy Mass Nuclei

V. Tselyaev, N. Lyutorovich, J. Speth, S. Krewald, P. -G. Reinhard

摘要:

本文给出了时间阻塞近似(TBA)下轻、中、重质量核巨共振的计算结果。TBA是广泛使用的随机相位近似(RPA)的扩展,通过耦合到声子激发来添加复杂的配置。提出了一种处理单粒子连续体的新方法,并应用于本计算。我们详细研究了数值结果对单粒子空间大小、声子数以及核物质性质的依赖性。我们的方法是自洽的,基于Skyrme类型的能量密度泛函,我们使用了七个不同的参数集。数值计算结果与实验数据进行了比较。

英文摘要:

We present results of the time blocking approximation (TBA) on giant resonances in light, medium and heavy mass nuclei. The TBA is an extension of the widely used random-phase approximation (RPA) adding complex configurations by coupling to phonon excitations. A new method for handling the single-particle continuum is developed and applied in the present calculations. We investigate in detail the dependence of the numerical results on the size of the single particle space and the number of phonons as well as on nuclear matter properties. Our approach is self-consistent, based on an energy-density functional of Skyrme type where we used seven different parameter sets. The numerical results are compared with experimental data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑