Microscopic Theory of Nuclear and Hypernuclear Structure and Reactions

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One of the primary goals of nuclear physics research is to determine how the constituents of a nucleus interact with each other and what phenomena occur due to these interactions. New opportunities to explore theseinteractions have emerged with the development of improved experimental techniques and facilities. For example, nuclei whose proton or neutron numbers are very different from those of naturally occuring isotopes are now studied with high intensity radioactive beams. A comparison of the expermental results from these facilities with the predictions of the proposed calculations will provide an understanding of the phenomena and their dependence on the underlying interaction. Such calculations also provide a guide for experimentalists by telling them which experiments will yield information on specific components of the interaction or which experiments will produce a desired phenomena. Many of these calculations will lead to a better understanding of the types of radiation emitted from stars and how elements are made inside stars. In addition, a theory of how the protons and neutrons that comprise a nucleus interact with each other can be extended to the interactions among protons, neutrons, and the many unstable particles that exist for only fractions of a second. Therefore, an additional task is to develop and test these more general interactions. It is likely that the particles that are unstable here on Earth can be stable under extreme conditions such as inside neutron stars and, therefore, alter the properties of neutron stars.