IBM跨壳激发的玻色子展开厄米途径

Hermitian Boson Expansion Approach of IBM Toward Cross Shell Excitations

本文借助Holstein-Primakoff玻色子展开方法在IBM哈密顿量中引入厄米和有限形式的补充项,以描述跨壳激发,并推广内禀凝聚态方法处理闯入态。按照这种理论方法计算了Sn核的低能能谱,得到了与实验相符合的振动谱及附加的转动谱。

By the Holstein--Primakoff boson expansion, an hermitian supplementary term with finite form is introduced into the IBM hamiltonian to describe the cross shell excitations. The me- thod of intrinsic condensate is generalized to treat the intruder states. According to this scheme, the low-lying spectra of the Sn isotopcs are calculated. Both the vibrational spectra and the additional rotational spectra are obtained.