HYPERON-NUCLEON AND HYPERON-HYPERON INTERACTIONS IN NUCLEI

The G-matrices are derived on the basis of meson-theoretical hyperon-n ucleon and hyperon-hyperon potentials from the Nijmegen group (model-D , model-F, soft-core model) and the Julich group (version-A, version-B ). In order to make easy applications to hypernuclei, they are paramet rized to express in terms of three-range Gaussian radial functions wit h the density dependence being in the quadratic form of the Fermi mome ntum. Through the structure calculations of Lambda-, Sigma-, Lambda La mbda- and Xi-hypernuclei, properties of these G-matrix interactions ha ve been investigated in the Lambda N, Sigma N, Lambda Lambda and Xi N channels, respectively.