Shape phase transitions in the interacting boson model: Phenomenological versus microscopic descriptions
Shape phase transitions in the interacting boson model: Phenomenological versus microscopic descriptions
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相互作用玻色子模型中的形状相变：现象学描述与微观描述
DOI：
10.1103/physrevc.85.054309
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发表时间：
2012-05
影响因子：
3.1
通讯作者：
Otsuka, T.
中科院分区：
文献类型：
--
作者：
Nomura, K.;Guo, L.;Shimizu, N.;Otsuka, T.
我们在质子 - 中子相互作用玻色子模型（IBM - 2）内研究偶 - 偶${}_{64}$钆和${}_{66}$镝同位素中的形状相变。IBM - 2哈密顿量的参数通过两种不同的方式确定：通常的唯象拟合
We investigate the shape phase transition in even-even ${}_{64}$Gd and ${}_{66}$Dy isotopes within the proton-neutron interacting boson model (IBM-2). The parameters of the IBM-2 Hamiltonian are fixed in two different ways: the usual phenomenological fitting calculation and the mapping of the constrained self-consistent mean-field calculation with a Skyrme energy density functional onto the appropriate boson system. Notable differences are found between the energy surfaces for the phenomenological and the mapped IBM-2. Key quantities for the collective structural evolution, including level energies, $B(\mathrm{E}2)$ values, quadrupole moments, and the two-neutron separation energies, are analyzed in comparison to the experimental data. We show that the transition in these quantities occurs rapidly with the neutron number in the IBM-2 phenomenology but is somewhat smeared out in the mapped IBM-2. The differences in the measurable quantities are consistent with what is suggested by the energy-surface analysis.
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影响因子：
3.8
作者：
D. Larese;F. Iachello
通讯作者：
D. Larese;F. Iachello
影响因子：
8.6
作者：
R. Krücken;B. Albanna;C. Bialik;R. Casten;J. Cooper;A. Dewald;N. Zamfir;C. Barton;C. Beausang-C.-Beausa
通讯作者：
R. Krücken;B. Albanna;C. Bialik;R. Casten;J. Cooper;A. Dewald;N. Zamfir;C. Barton;C. Beausang-C.-Beausa
DOI：
--
发表时间：
1988-06
期刊：
--
影响因子：
--
作者：
J. M. Eisenberg;W. Greiner
通讯作者：
J. M. Eisenberg;W. Greiner
影响因子：
1.4
作者：
GILMORE, R;FENG, DH
通讯作者：
FENG, DH
DOI：
10.1016/s0375-9474(01)01270-2
发表时间：
2001-03
期刊：
Nuclear Physics
影响因子：
--
作者：
R. Fossion;C. Coster;J. García-Ramos;T. Werner;K. Heyde
通讯作者：
R. Fossion;C. Coster;J. García-Ramos;T. Werner;K. Heyde