arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0912.4381nucl-th
收藏

核密度泛函理论中的同位旋对称性恢复:形式和应用

Isospin-symmetry restoration within the nuclear density functional theory: formalism and applications

W. Satula, J. Dobaczewski, W. Nazarewicz, M. Rafalski

摘要:

原子核的同位旋对称性被电荷相关的相互作用,主要是库仑力破坏。在核密度泛函理论中,同位旋也会自发地断裂。我们提出了一个植根于平均场论的投影方案,它允许在基态和激发核态中一致地处理同位旋破缺。我们证明,该计划是基本上没有虚假的发散粒子数和角动量恢复方法。新技术的应用包括中等质量N=Z核的高自旋激发态,如超形变带和多粒子多空穴终止态。

英文摘要:

Isospin symmetry of atomic nuclei is explicitly broken by the charge-dependent interactions, primarily the Coulomb force. Within the nuclear density functional theory, isospin is also broken spontaneously. We propose a projection scheme rooted in a mean field theory, that allows the consistent treatment of isospin breaking in both ground and exited nuclear states. We demonstrate that this scheme is essentially free from spurious divergences plaguing particle-number and angular-momentum restoration approaches. Applications of the new technique include excited high-spin states in medium-mass N=Z nuclei, such as superdeformed bands and many-particle-many-hole terminating states.

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。

↑