IBM Parameters Derived from Realistic Shell-Model Hamiltonian via H^n-Cooling Method

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概要

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• There is a certain influence of non-collective degrees-of-freedom even in lowest-lying states of medium-heavy nuclei. This influence seems to be significant for some of the IBM parameters. In order to take it into account, several renormalization approaches have been applied. It has been shown in the previous studies that the influence of the G-pairs is important, but does not fully account for the fitted values. The influence of the non-collective components may be more serious when we take a realistic effective nucleonic interaction. To incorporate this influence into the IBM parameters, we employ the recently developed H^n-cooling method. This method is applied to renormalize the wave functions of the states consisting of the SD-pairs, for the Cr-Fe nuclei. On this ground, the IBM Hamiltonian and transition operators are derived from corresponding realistic shell-model operators, for the Cr-Fe nuclei. Together with some features of the realistic interaction, the effects of the non-SD degrees-of-freedom are presented.

• 理論物理学刊行会の論文
• 1997-03-25

著者

• NAKADA Hitoshi

  Department of Physics, Chiba University

• Nakada Hitoshi

  Department Of Physics Chiba University

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• IBM Parameters Derived from Realistic Shell-Model Hamiltonian via H^n-Cooling Method
• Bosonization from Quasiparticle Representation and Effects of Nucleon-Number Conservation
• A Hartree-Fock Calculation with Yukawa Interaction

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