This thesis work studies various nucleon-nucleon interaction models and their applications in two- and three-body calculations. Because direct solution of threebody Faddeev solutions reveals nearly unsurmountable calculational difficulties, EST method to generate a separable approximation to a given potential is examined with special care. Actual calculations are performed with EST approximations of the Paris and the Bonn potential, both of which are based on meson-exchange theories. The results manifest that meson-exchange picture is able to describe the nucleon-nucleon interaction for at least a wide energy range and that EST method is a simple and efficient way to construct a separable potential which carries both on-shell and off-shell informations of a given potential. Among other issues discussed in this thesis are some challenging problems in present three-nucleon physics, namely neutron analyzing power puzzle in neutron-deuteron scattering and triton binding energy gap between measured value and theoretical predictions. This work also investigates the possible existence of three-body force and its impacts on different observables and suggests the way to future progress in both two- and three-nucleon studies / acase@tulane.edu
| Identifer | oai:union.ndltd.org:TULANE/oai:http://digitallibrary.tulane.edu/:tulane_23423 |
| Date | January 1999 |
| Contributors | Chen, Xiaoyang (Author), Purrington, Robert D (Thesis advisor) |
| Publisher | Tulane University |
| Source Sets | Tulane University |
| Language | English |
| Detected Language | English |
| Rights | Access requires a license to the Dissertations and Theses (ProQuest) database., Copyright is in accordance with U.S. Copyright law |
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