Study of Light Hypernuclei in the Realistic Quark-Model Baryon-Baryon Interaction

利用实际的重子-重子相互作用fss 2和FSS对轻Λ超核进行了详细的Faddeev和G矩阵计算，并通过计算与实验的详细比较，阐明了超子-核子和超子-超子相互作用.这些建议是基于以下两个最近的事态发展，即：将fss 2和FSS推广到由八重态重子（B_8）组成的任何两重子系统，并利用两集团RGM核建立了三集团方程的公式。这些计算包括超曲子的Λ NN-NNNN耦合道Faddeev计算、^6_<ΛΛ>He的Faddeev计算、（NAGARA事件），并分析了^9_ΛBe的5/2^+和3/2^+激发态的自旋轨道分裂。通过与实验结果的比较，得到了一些重要的结果。2.基于两集团RGM核的三集团Faddeev公式的发展：将该公式应用于三集团正交条件模型（OCM）。3.改进了fss 2和FSS，并开通了QMPACK主页：改进了计算程序，使之在物理粒子基和同位旋基下计算重子系统。对库仑力的处理也作了改进。新的计算机代码和获得的结果在下面的QMPACK主页中给出。http://www.qmpack.homelinux.com/~qmpack/index.php

The purpose of this study is to carry out detailed Faddeev and G-matrix calculations of light Λ hypernuclei by using the realistic baryon-baryon interactions fss2 and FSS, and to clarify the hyperon-nucleon and hyperon-hyperon interactions through detailed comparison between the calculations and experiments. These are based on the following two recent developments ; i.e., fss2 and FSS are extended to any two-baryon systems composed of the octet baryons (B_8), and a formulation of the three-cluster equation using two-cluster RGM kernels is made.1.Faddeev calculations using fss2 and FSS : These include the ΛΝΝ-ΣΝΝ coupled-channel Faddeev calculation of the hypertriton, the Faddeev calculation of ^6_<ΛΛ>He (NAGARA event) in the 2Λα model, and the analysis of the spin-orbit splitting of the 5/2^+ and 3/2^+ excited states of ^9_ΛBe. Some important results are obtained through the comparison with experiments.2.Development of the three-cluster Faddeev formulation using the two-cluster RGM kernels : This formulation is applied to the three-cluster orthogonality condition model(OCM). A new concept of the almost redundant Faddeev components is obtained.3.Improvement of fss2 and FSS, and opening of the QMPACK homepage : The computer codes are improved to calculate the two-baryon systems in the physical particle basis, in addition to the isospin basis. The treatment of the Coulomb force is also improved. The new computer code and the results obtained are given in the following QMPACK homepage. http://www.qmpack.homelinux.com/~qmpack/index.php