Abstract
A shell-model potential is defined for calculations on the structure of finite nuclei by the reaction-matrix theory. The rearrangement potential is part of this shell-model potential. The contribution to the rearrangement energy from the short- and long-range parts of the nucleon-nucleon potential is calculated in infinite nuclear matter. The third-order rearrangement term is shown to be predominantly due to the strong short-range part, while the second-order term comes mainly from the long-range part. The dependence of the reaction matrix on the structure of the nuclear medium in which the nucleons interact is investigated. The results from the calculations of rearrangement energies is then of help. Part of the short-range repulsion is proportional to the reaction-matrix potential energies of the interacting nucleons. Another part is a function of the "local" density. The long-range part of the reaction matrix varies somewhat less with the density of an infinite system than does the short-range part. It seems, however, that it would be important to include its dependence on the medium, especially for studying small nuclei or the structure of the surface.
Published Version
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