STRUCTURE OF MULTI-ANTIKAONIC NUCLEI IN THE RELATIVISTIC MEAN-FIELD MODEL

The structure of multi-antikaonic nuclei (MKN), where several K⁻ mesons are bound in the nucleus, is studied in the relativistic mean-field model. A kaonic part of the thermodynamic potential including kaon-nucleon interactions is derived on the basis of chiral symmetry (abbreviated as a chiral model). It is shown that nonperturbative effects from kaons in the chiral model on the properties of the MKN such as the density distributions of nucleons and K⁻ mesons and the binding energy become important since the number of the embedded K⁻ increases.