Theory of Collective Excitations in Spherical Odd-Mass Nuclei. IV: Formulation in the General Many-j-Shell Model

A. Kuriyama, T. Marumori, K. Matsuyanagi, R. Okamoto
1974 Progress of theoretical physics  
The aim of this paper is to give a.' systematic formulation of microscopic description of the collective excitations in spherical odd-mass nuclei. The theory· can be regarded as a natural extension of" the conventional quasi-partiCle-random-p hase approximation for spherical even-mass :imclei . into the case of spherical odd-mass nuclei. In the same manner as the conventional random-phase approximation for even-mass nuclei leads us to the concept of "phonon", the theory necessarily leads us, to
more » ... the concept of a new kind of fermion-type collective excitation mode. Recent rapid accumulation of experimental data seems to be revealing the systematic presence of this kind of collective mode in many odd-mass nuclei.
doi:10.1143/ptp.52.1819 fatcat:345v3ga34bakrp64qqoguzhlmm