Ab Initio Coupled-Cluster Effective Interactions for the Shell Model: Application to Neutron-Rich Oxygen and Carbon Isotopes

被引：157

作者：

Jansen, G. R. ^{[1
,2
]}

Engel, J. ^{[3
]}

Hagen, G. ^{[1
,2
]}

Navratil, P. ^{[4
]}

Signoracci, A. ^{[1
,2
]}

机构：

[1] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA

[2] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA

[3] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27516 USA

[4] TRIUMF, Vancouver, BC V6T 2A3, Canada

来源：

PHYSICAL REVIEW LETTERS | 2014年 / 113卷 / 14期

基金：

加拿大自然科学与工程研究理事会;

关键词：

EFFECTIVE-FIELD THEORY; NUCLEI;

D O I：

10.1103/PhysRevLett.113.142502

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We derive and compute effective valence-space shell-model interactions from ab initio coupled-cluster theory and apply them to open-shell and neutron-rich oxygen and carbon isotopes. Our shell-model interactions are based on nucleon-nucleon and three-nucleon forces from chiral effective-field theory. We compute the energies of ground and low-lying states, and find good agreement with experiment. In particular, our computed 2(+) states are consistent with N = 14, 16 shell closures in O-22,O-24, and a weaker N = 14 shell closure in C-20. We find good agreement between our coupled-cluster effective-interaction results with those obtained from standard single-reference coupled-cluster calculations for up to eight valence neutrons.

引用

页数：5

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