Few-nucleon systems with two-nucleon forces from chiral effective field theory

被引：72

作者：

Epelbaum, E ^{[1
]}

Nogga, A

Glöckle, W

Kamada, H

Meissner, UG

Witala, H

机构：

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

[2] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA

[3] Kyushu Inst Technol, Fac Engn, Dept Phys, Kitakyushu, Fukuoka 8048550, Japan

[4] Forschungszentrum, Inst Kernphys Theorie, D-52425 Julich, Germany

[5] Jagiellonian Univ, Inst Phys, PL-30059 Krakow, Poland

来源：

EUROPEAN PHYSICAL JOURNAL A | 2002年 / 15卷 / 04期

关键词：

D O I：

10.1140/epja/i2002-10048-2

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：

Nucleon-nucleon (NN) forces from chiral perturbation theory at next-to-leading (NLO) and next-to-next-to-leading order (NNLO) are applied to systems with two, three and four nucleons. At NNLO, we consider two versions of the chiral potential which differ in the strength of the two-pion exchange (TPE) but describe two nucleon observables equally well. The NNLO potential leads to unphysical deeply bound states in the low partial waves and effects of the 3N forces, which appear first at this order, are expected to be large. We provide arguments for a reduction of the TPE potential and introduce the NNLO* version of the NN forces. We calculate nd scattering observables as well as various properties of H-3 and H-4 with the NNLO* potential and find good agreement with the data and with predictions based upon the standard high-precision potentials. We find an improved description of the H-3 and H-4 binding energies.

引用

页码：543 / 563

页数：21

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