Emerging Concepts in Nuclear Structure Based on the Shell Model

Some emerging concepts of nuclear structure are overviewed. (i) Background: the many-body quantum atomic nucleus, a complex system comprising protons and neutrons (called nucleons collectively), has been studied largely based on idea liquid (à la Landau), where quasiparticles moving in (mean) potential well, with weak “residual” interactions between nucleons. The is rigid general, although it can be anisotropic. While this view was good starting point, time to look into kaleidoscopic aspects brought by underlying dynamics forces. (ii) Methods: exotic features as well classical issues investigated from fresh viewpoints shell model nucleon–nucleon interactions. 70-year progress shell–model approach, including effective interactions, enables us do this. (iii) Results: we go beyond picture solid activating monopole This produces notable consequences key such shell/magic structure, shape deformation, dripline, etc. These understood evolution (including type-II), T-plot, self-organization (for collective bands), triaxial-shape dominance, new dripline mechanism, resulting predictions analyses agree experiment. (iv) Conclusion: nuclei surprisingly richer objects than initially thought.