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arXiv 0710.0880nucl-th
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用短程力研究滴线核的连续性和对称性守恒效应

Continuum and Symmetry-Conserving Effects in Drip-line Nuclei Using Finite-range Forces

N. Schunck, J. L. Egido

摘要:

我们报告的第一个计算的核性质附近的滴线使用球Hartree-Fock-Bogoliubov平均场论与有限范围的力补充连续和粒子数投影效应。计算是在一个盒子中计算的Woods-Saxon势的本征态的基础上进行的,从而保证了连续效应得到了适当的考虑。对自洽解进行变分后投影到好粒子数上,并对投影结果进行近似。我们给出了滴线的位置,并研究了丰中子核中的中子密度。我们讨论了连续谱和粒子数恢复效应对核观测量的敏感性。

英文摘要:

We report the first calculations of nuclear properties near the drip-lines using the spherical Hartree-Fock-Bogoliubov mean-field theory with a finite-range force supplemented by continuum and particle number projection effects. Calculations were carried out in a basis made of the eigenstates of a Woods-Saxon potential computed in a box, thereby garanteeing that continuum effects were properly taken into account. Projection of the self-consistent solutions on good particle number was carried out after variation, and an approximation of the variation after projection result was used. We give the position of the drip-lines and examine neutron densities in neutron-rich nuclei. We discuss the sensitivity of nuclear observables upon continuum and particle-number restoration effects.

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