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.

引用

页数：12

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