arXiv:nucl-th/0601088·v1·Nuclear Theory
A Note on the Two-Level Pairing Model Obeying the su(2)*su(2)-Algebra
C.Providencia (Univ. de Coimbra, Portugal)🇵🇹 · J.da Providencia (Univ. de Coimbra, Portugal)🇵🇹 · Y.Tsue (Kochi Univ., Japan)🇯🇵 · M.Yamamura (Kansai Univ., Japan)🇯🇵
Abstract
The two-level pairing model obeying the su(2)*su(2)-algebra, which was discussed in the previous paper, is re-formed in the framework of the su(1,1)*su(1,1)-algebra in the Schwinger boson representation. With the aid of MYT mapping method, the Schwinger boson representation is reduced to the Holstein-Primakoff boson representation, which is expressed in terms of two kinds of bosons. Further, with the aid of the squeezed coherent state, the classical counterpart is obtained.
Comments: 7 pages, no figure, using PTP TeX class