Epelbaum E, Kamada H, Nogga A, Witala H, Glöckle W, Meissner U G
Forschungszentrum Jülich, Institut für Kernphysik (Theorie), D-52425 Jülich, Germany.
Phys Rev Lett. 2001 May 21;86(21):4787-90. doi: 10.1103/PhysRevLett.86.4787.
Recently developed chiral nucleon-nucleon (NN) forces at next-to-leading order (NLO), that describe NN phase shifts up to about 100 MeV fairly well, have been applied to 3N and 4N systems. Faddeev-Yakubovsky equations have been solved rigorously. The resulting 3N and 4N binding energies are in the same range as found using standard NN potentials. In addition, low-energy 3N scattering observables are very well reproduced as for standard NN forces. The long-standing A(y) puzzle is absent at NLO. The cutoff dependence of the scattering observables is rather weak.
最近发展的次领头阶（NLO）手征核子 - 核子（NN）力，能很好地描述高达约100 MeV的NN相移，已被应用于3N和4N系统。费德耶夫 - 雅库博夫斯基方程已得到严格求解。由此得到的3N和4N结合能与使用标准NN势所得到的结果处于同一范围。此外，低能3N散射可观测量与标准NN力的情况一样得到了很好的再现。在NLO时长期存在的A(y)难题不存在了。散射可观测量的截断依赖性相当弱。
