The Third International Symposium on Frontiers in Nuclear Physics -- Use of RI beams for study of reaction mechanisms and coupling between bound and continuum states

Radioactive ion beams (RIB) provide a unique opportunity to study nuclear structures and reactions because of dynamic change of nuclear properties. On can change, i) the proton-to-neutron ratios, (ii) the Fermi energy difference of proton and neutron, (iii) the separation energy of valence nucleon(s) or even the binding energy per nucleon in a nucleus, and (iv) the density of protons and neutrons, within wide ranges. So far, most of the studies with RIB were to study structures of nuclei far from the stability line. Many new features of nuclear structures have been discovered and promoted developments of new-generation models of nuclear structure. It also reveals the importance of tensor interactions for understanding the nuclear structure in a wide range of nuclear chart. The weakly bound nature of nuclei near the drip line calls for the theoretical treatment of bound states and continuum on the same footing. There are several theoretical methods to treat resonances and continuum states simultaneously, such as the complex scaling method and the continuum-discretized coupled-channel method. We consider it is timely to discuss such problems in this symposium. The symposium will include the following subjects: 1. Present theories of nuclear reactions and their applications in reactions of unstable nuclei 2. Experimental developments for reaction studies with unstable nuclei 3. Transfer reactions from low to high energies 4. Nucleon momentum distributions in nuclei and transfer reactions 5. Methods of treating bound and continuum states simultaneously 6. Other related topics In connection with this symposium, we would like to have a special session for the work of Professor Kiyoshi Kato who has retired from Hokkado University this April and became a professor emeritus of Hokkaido University. He has been working on the physics of resonances using the theory of complex scaling method that treats the bound and unbound states simultaneously, which is one of the subjects of this symposium. He has also worked in cluster structures of stable and unstable nuclei, and for nuclear data as a part of worldwide cooperation under the auspices of the International Atomic Energy Agency (IAEA). For nuclear data project, owing to his efforts for over 30 years, Japanese experimental data from about 900 articles are currently retrievable from the nuclear reaction database managed by IAEA. This symposium is hosted by School of Physics and Nuclear Energy Engineering, Beihang University and Center for Nuclear Science and Technology (RCNST) and is also partly supported by the Asia-Africa Science Platform Program (AASPP) of the Japan Society for the Promotion of Science (JSPS) and RCNP, Osaka University.