Ab Initio Calculation of the Spectrum and Structure of 16O

被引：106

作者：

Epelbaum, Evgeny ^{[1
]}

Krebs, Hermann ^{[1
]}

Laehde, Timo A. ^{[2
,3
]}

Lee, Dean ^{[4
]}

Meissner, Ulf-G. ^{[2
,3
,5
,6
,7
]}

Rupak, Gautam ^{[8
]}

机构：

[1] Ruhr Univ Bochum, Inst Theoret Phys 2, D-44870 Bochum, Germany

[2] Forschungszentrum Julich, Inst Kernphys, Inst Adv Simulat, D-52425 Julich, Germany

[3] Forschungszentrum Julich, Julich Ctr Hadron Phys, D-52425 Julich, Germany

[4] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA

[5] Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany

[6] Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany

[7] Forschungszentrum Julich, JARA High Performance Comp, D-52425 Julich, Germany

[8] Mississippi State Univ, Dept Phys & Astron, Mississippi State, MS 39762 USA

来源：

PHYSICAL REVIEW LETTERS | 2014年 / 112卷 / 10期

基金：

美国国家科学基金会;

关键词：

ELECTRON-SCATTERING; LIGHT-NUCLEI; MODEL; WIDTHS; STATES;

D O I：

10.1103/PhysRevLett.112.102501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present ab initio lattice calculations of the low-energy even-parity states of O-16 using chiral nuclear effective field theory. We find good agreement with the empirical energy spectrum, and with the electromagnetic properties and transition rates. For the ground state, we find that the nucleons are arranged in a tetrahedral configuration of alpha clusters. For the first excited spin-0 state, we find that the predominant structure is a square configuration of alpha clusters, with rotational excitations that include the first spin-2 state.

引用

页数：5

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