Unrestricted Skyrme-tensor time-dependent Hartree-Fock model and its application to the nuclear response from spherical to triaxial nuclei
Unrestricted Skyrme-tensor time-dependent Hartree-Fock model and its application to the nuclear response from spherical to triaxial nuclei
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DOI：
10.1103/physrevc.86.044303
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发表时间：
2012-06
影响因子：
3.1
通讯作者：
S. Fracasso;E. Suckling;P. Stevenson
中科院分区：
文献类型：
--
作者：
S. Fracasso;E. Suckling;P. Stevenson
基于完整的标准Skyrme能量密度泛函和张量力的补充，提出了三维空间中原子核含时的Hartree-Fock模型.该模型实现了完全自洽。在线性极限下讨论了等矢量巨偶极共振的应用，范围从球形核（16 O和120 Sn）到显示轴向或三轴变形的系统（24 Mg，28 Si，178 Os，190 W和238 U）。特别注意的是从中央部门的功能，最近包括与张量的自旋相关的条款。它们能够对该通道中的强度分布产生质的变化。并讨论了其对变形性能的影响。对线性响应的定量影响很小，总体而言，巨偶极子能量不受影响。计算结果与（准）粒子随机相位近似和实验数据的预测进行了比较，发现吻合良好
The nuclear time-dependent Hartree-Fock model formulated in three-dimensional space, based on the full standard Skyrme energy density functional complemented with the tensor force, is presented. Full self-consistency is achieved by the model. The application to the isovector giant dipole resonance is discussed in the linear limit, ranging from spherical nuclei (16O and 120Sn) to systems displaying axial or triaxial deformation (24Mg, 28Si, 178Os, 190W and 238U). Particular attention is paid to the spin-dependent terms from the central sector of the functional, recently included together with the tensor. They turn out to be capable of producing a qualitative change on the strength distribution in this channel. The effect on the deformation properties is also discussed. The quantitative effects on the linear response are small and, overall, the giant dipole energy remains unaffected. Calculations are compared to predictions from the (quasi)-particle random-phase approximation and experimental data where available, finding good agreement