arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1102.1787nucl-th
收藏

从头计算的渐近归一化系数

Asymptotic normalization coefficients from ab initio calculations

Kenneth M. Nollett, R. B. Wiringa

摘要:

本文计算了质量数为3 ~ 9的核子态的单核子迁移的渐近归一化系数。我们的ANC计算从变分蒙特卡罗解的多体薛定谔方程与组合阿贡V18两核子和厄巴纳IX三核子的潜力。而不是计算明确的重叠积分,我们采用了格林函数方法,是不敏感的困难,建设和蒙特卡罗采样的变分波函数的长程尾部。该方法还允许在物理分离能下计算ANC,即使它不同于哈密顿量的分离能。我们比较我们的结果,这对于大多数核是第一个从头计算的ANC,与现有的实验和理论结果,并讨论进一步可能的应用程序的技术。

英文摘要:

We present calculations of asymptotic normalization coefficients (ANCs) for one-nucleon removals from nuclear states of mass numbers 3 to 9. Our ANCs were computed from variational Monte Carlo solutions to the many-body Schroedinger equation with the combined Argonne v18 two-nucleon and Urbana IX three-nucleon potentials. Instead of computing explicit overlap integrals, we applied a Green's function method that is insensitive to the difficulties of constructing and Monte Carlo sampling the long-range tails of the variational wave functions. This method also allows computation of the ANC at the physical separation energy, even when it differs from the separation energy for the Hamiltonian. We compare our results, which for most nuclei are the first ab initio calculations of ANCs, with existing experimental and theoretical results and discuss further possible applications of the technique.

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。

↑