“…This property is referred to as the impurity effect of Λ particle, which has also been one of the most important topics in hypernuclear physics. Moreover, some new states called supersymmetric states [Dalitz and Gal (1976); Zhang et al (1982); Motoba et al (1985)] that cannot exist in ordinary nuclei can appear in hypernuclei, the study of which greatly broadens our knowledge on nuclear physics.…”