Lattice chiral effective field theory with three-body interactions at next-to-next-to-leading order

被引：50

作者：

Epelbaum, E. ^{[1
,2
,3
,6
]}

Krebs, H. ^{[1
,2
,3
,6
]}

Lee, D. ^{[2
,3
,4
]}

Meissner, U. -G. ^{[1
,2
,3
,5
,6
]}

机构：

[1] Forschungszentrum Julich, Inst Kernphys IKP 3, D-52425 Julich, Germany

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

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

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

[5] Forschungszentrum Julich, IAS, D-52425 Julich, Germany

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

来源：

EUROPEAN PHYSICAL JOURNAL A | 2009年 / 41卷 / 01期

关键词：

SHORT-RANGE INTERACTIONS; FEW-NUCLEON FORCES; VOLUME DEPENDENCE; 3-NUCLEON FORCES; ENERGY-SPECTRUM; PHASE-SHIFTS; LIGHT-NUCLEI; LAGRANGIANS; SCATTERING; SYMMETRY;

D O I：

10.1140/epja/i2009-10764-y

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 consider low-energy nucleons at next-to-next-to-leading order in lattice chiral effective field theory. Three-body interactions first appear at this order, and we discuss several methods for determining three-body interaction coefficients on the lattice. We compute the energy of the triton and low-energy neutron-deuteron scattering phase shifts in the spin-doublet and spin-quartet channels using Luscher's finite-volume method. In the four-nucleon system we calculate the energy of the alpha-particle using auxiliary fields and projection Monte Carlo.

引用

页码：125 / 139

页数：15

共 70 条

[1] Towards a perturbative theory of nuclear forces [J].