Neutron-proton scattering with lattice chiral effective field theory at next-to-next-to-next-to-leading order

被引：18

作者：

Li, Ning ^{[1
,2
]}

Elhatisari, Serdar ^{[3
,4
,5
]}

Epelbaum, Evgeny ^{[6
]}

Lee, Dean ^{[1
,2
,7
]}

Lu, Bing-Nan ^{[1
,2
]}

Meissner, Ulf-G ^{[3
,4
,8
,9
,10
]}

机构：

[1] Michigan State Univ, Facil Rare Isotope Beams, E Lansing, MI 48824 USA

[2] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

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

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

[5] Karamanoglu Mehmetbey Univ, Dept Phys, TR-70100 Karaman, Turkey

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

[7] North Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA

[8] Forschungszentrum Julich, Inst Adv Simulat, Inst Kemphys, D-52425 Julich, Germany

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

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

来源：

PHYSICAL REVIEW C | 2018年 / 98卷 / 04期

关键词：

ASYMPTOTIC D-STATE; NUCLEAR-FORCES; DEUTERON; ENERGY; SHIFT;

D O I：

10.1103/PhysRevC.98.044002

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 new lattice formulation of chiral effective field theory interactions with a simpler decomposition into spin channels. With these interactions the process of fitting to the empirical scattering phase shifts is simplified, and the resulting lattice phase shifts are more accurate than in previous studies. We present results for the neutron-proton system up to next-to-next-to-next-to-leading order for lattice spacings of 1.97, 1.64, 1.32, and 0.99 fm. Our results provide a pathway to ab initio lattice calculations of nuclear structure, reactions, and thermodynamics with accurate and systematic control over the chiral nucleon-nucleon force.

引用

页数：18

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