Neutron-rich nuclei from the nuclear force*

The properties of neutron-rich nuclei starting from the nuclear force with two and three-body force is presented. Recent experimental and computational development makes the neutron-rich nuclei a big frontier where the fundamental treatment is important. We aim to study neutron-rich nuclei starting from the nuclear force and the theory to derive the effective interaction not empirically but via the microscopic theory. We construct the effective interaction for the shell-model using newly developed Extended Kuo-Krenciglowa (EKK) method. The major difference from Kuo-Krenciglowa (KK) method is that EKK method can be applied to non-degenerate model space where KK method inevitably experience the divergences. In addition, we include the effects of three body force by part via the effective two-body force. With this microscopically derived nuclear force, we discuss the shell structure of neutron-rich nuclei and the role of three-body force.