On the Coherent and the Squeezed State in the su(2)-Boson Model
M. Yamamura, Atsushi KURIYAMA, Y. Tsue · Progress of Theoretical Physics · 1992
With the use of the coherent and the squeezed state combined with canonicity condition in the time-dependent Hartree-Fock theory, quantal fluctuation appearing in the su(2)-boson model, which is well known as Schwinger boson representation, is investigated. Especially, the attention is focussed on the least quantal effect: 1) the minimal uncertainty and 2) the quantal fluctuation energy. The Lipkin model, an example obeying the su(2)-algebra, is adopted for demonstrating the basic idea.