Investigation of the Minimal Uncertainty Appearing in the Quasi-Spin Coherent and the Quasi-Spin Squeezed State of Many-Fermion System : The Case of Many-Nucleon System in Pairing Correlation : Nuclear Physics

概要

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Minimal quantal effect in many-nucleon system which is correlated through pairing interaction is investigated in the frame of the quasi-spin coherent and the quasi-spin squeezed state. Basic idea can be found in the case of the su(2)-boson model reported by the present authors. For simplicity, the single-j shell model is adopted. The quasi-spin coherent state, which is well known as the BCS ground-state, shows the minimal uncertainty for quasi-spin operators under a rather restricted condition. In order to relax this restriction, the quasi-spin squeezed state is introduced and it is shown that, with the help of a certain phase angle parameter, the minimal uncertainty for quasi-spin operators can be controlled.
理論物理学刊行会の論文
1994-09-25