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nucl-th2007
A Refined Numerical Result on the First Excitation Energy in the Two-Level Pairing Model
Y. Tsue, C. Providencia, J. da Providencia +1
The first excitation energy in the two-level pairing model is investigated in terms of the equilibrium and the small fluctuation around it. The basic idea is an extension of result…
nucl-th2002
The su(1,1)-Algebraic Boson Model in the Deformed Boson Scheme
A. Kuriyama, C. Providencia, J. da Providencia +2
Following the deformed boson scheme leading to the su(1,1)-algebra, a certain simple boson system is deformed in the framework of the second Holstein-Primakoff representation. With…
nucl-th2000
A Possible Boson Realization of Generalized Lipkin Model for Many-Fermion System
A. Kuriyama, C. Providencia, J. da Providencia +2
On the basis of the formalism proposed by three of the present authors (A.K., J.P.and M.Y.), generalized Lipkin model consisting of (M+1) single-particle levels is investigated. Th…