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arXiv 0804.1209nucl-th
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高斯展开法在形变核平均场计算中的应用

Application of Gaussian expansion method to nuclear mean-field calculations with deformation

H. Nakada

摘要:

我们广泛地开发了一种方法,实现变形核的平均场计算,使用高斯展开法(GEM)。该GEM算法具有以下优点:(i)它能有效地描述大$r$下波函数的能量相关渐近性;(ii)它适用于各种有效相互作用,包括那些有限范围的相互作用;(iii)基参数对核素不敏感,从而可以用一组基处理宽质量范围内的许多核。将球GEM基与单粒子基的轨道角动量进行适当的截断后叠加,得到了具有合理精度的变形单粒子波函数。我们将新算法应用于具有Gogny相互作用的Mg核的Hartree-Fock和Hartree-Fock-Bogolyubov计算,并由此提出了$^{40}$ Mg的形变中子晕的颈结构.

英文摘要:

We extensively develop a method of implementing mean-field calculations for deformed nuclei, using the Gaussian expansion method (GEM). This GEM algorithm has the following advantages: (i) it can efficiently describe the energy-dependent asymptotics of the wave functions at large $r$, (ii) it is applicable to various effective interactions including those with finite ranges, and (iii) the basis parameters are insensitive to nuclide, thereby many nuclei in wide mass range can be handled by a single set of bases. Superposing the spherical GEM bases with feasible truncation for the orbital angular momentum of the single-particle bases, we obtain deformed single-particle wave-functions to reasonable precision. We apply the new algorithm to the Hartree-Fock and the Hartree-Fock-Bogolyubov calculations of Mg nuclei with the Gogny interaction, by which neck structure of a deformed neutron halo is suggested for $^{40}$Mg.

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。

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