Contribution of chiral three-body forces to the monopole component of the effective shell-model Hamiltonian

被引：43
|
作者：
Ma, Y. Z. [1 ,2 ]
Coraggio, L. [3 ]
De Angelis, L. [3 ]
Fukui, T. [3 ]
Gargano, A. [3 ]
Itaco, N. [3 ,4 ]
Xu, F. R. [1 ,2 ]
机构：
[1] Peking Univ, Sch Phys, Beijing 100871, Peoples R China
[2] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
[3] Complesso Univ Monte S Angelo, Ist Nazl Fis Nucl, Via Cintia, I-80126 Naples, Italy
[4] Univ Campania Luigi Vanvitelli, Dipartimento Matemat & Fis, Viale Abramo Lincoln 5, I-81100 Caserta, Italy
来源：
PHYSICAL REVIEW C | 2019年 / 100卷 / 03期
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
NUCLEON-INTERACTION;
D O I：
10.1103/PhysRevC.100.034324
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We present a study of the role played by realistic three-body forces in providing a reliable monopole component of the effective shell-model Hamiltonian. To this end, starting from a nuclear potential built up within the chiral perturbation theory, we derive effective shell-model Hamiltonians with and without the contribution of the three-body potential and compare the results of shell-model calculations with a set of observables that evidence shell-evolution properties. The testing ground of our investigation is nuclei belonging to the fp shell, since the shell-evolution towards shell closures in Ca-48 and Ni-56 provides a paradigm for shell-model Hamiltonians. Our analysis shows that only by including contributions of the three-body force is the monopole component of the effective shell-model Hamiltonian then able to reproduce the experimental shell evolution towards and beyond the closure at N = 28.
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收藏
页数：12
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