Effects of the Λ(1405) on the Structure of Multi-Antikaonic Nuclei

The effects of the Λ(1405) (Λ*) on the structure of the multi-antikaonic nucleus (MKN), in which several K− mesons are embedded to form deeply bound states, are considered based on chiral symmetry combined with a relativistic mean-field theory. It is shown that additional attraction resulting from the Λ* pole has a sizable contribution to not only the density profiles for the nucleons and K− mesons but also the ground state energy of the K− mesons and binding energy of the MKN as the number of the embedded K− mesons increases.