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 1508.05040nucl-thnucl-ex
收藏

从具有实际饱和性质的两核子和三核子相互作用探索sd壳层核

Exploring sd-shell nuclei from two- and three-nucleon interactions with realistic saturation properties

J. Simonis, K. Hebeler, J. D. Holt, J. Menendez, A. Schwenk

摘要:

我们基于一组低分辨率的两核子和三核子相互作用来研究所有中子和质子数为8 <= N,Z <= 20的sd壳层核的基态和激发态性质,这些相互作用预测了核物质的现实饱和性质。我们着重于估计由于分辨率尺度的变化,低能耦合,以及从多体方法的理论不确定性。实验的两个中子和两个质子的分离能量合理地再现,与约5兆电子伏的不确定性范围。第一个激发2+能量也显示出整体协议,具有约500千电子伏的更窄的不确定性范围。在大多数情况下,这个范围由哈密顿量中的不确定性决定。

英文摘要:

We study ground- and excited-state properties of all sd-shell nuclei with neutron and proton numbers 8 <= N,Z <= 20, based on a set of low-resolution two- and three-nucleon interactions that predict realistic saturation properties of nuclear matter. We focus on estimating the theoretical uncertainties due to variation of the resolution scale, the low-energy couplings, as well as from the many-body method. The experimental two-neutron and two-proton separation energies are reasonably well reproduced, with an uncertainty range of about 5 MeV. The first excited 2+ energies also show overall agreement, with a more narrow uncertainty range of about 500 keV. In most cases, this range is dominated by the uncertainties in the Hamiltonian.

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。

↑