6 papers · 1 filter
On Parametric Resonance in Quantum Many-Body System
Y. Tsue, J. da Providencia, A. Kuriyama +1
The dynamics governed by a requantized collective Hamiltonian in the coupled Lipkin model is investigated in the time-dependent variational approach with squeezed state. It is poin…
Note on the Orthogonal Set in Six Kinds of Boson Operators --In Relation to the su(1,1)- and its Relevant Algebras--
A. Kuriyama, C. Providencia, J. da Providencia +2
Following the basic idea proposed by the present authors in recent paper, a possible form of the orthogonal set for many-body system consisting of six kinds of boson operators is d…
A Possible Form of the Orthogonal Set in Six Kinds of Boson Operators --In Relation to the su(2)- and its Relevant Algebras--
A. Kuriyama, C. Providencia, J. da Providencia +2
With the aim of constructing coherent states for many-body systems consisting of six kinds of boson operators, a possible form of the orthogonal set is presented in terms of monomi…
On the Boson Number Operator in the Deformed Boson Scheme
A. Kuriyama, C. Providencia, J. da Providencia +2
Concerning the energy of harmonic oscillator, a prescription is proposed for making the original form unchanged even after q-deformation. Applicability of the prescription is limit…
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…
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…