71 citations · 275 across the 29 of their papers we have counts for
5 papers · 1 filter
Velocity operator approach to a Fermion system
Seiya Nishiyama, Joao da Providencia
In this paper, we formulate a velocity operator approach to a three-dimensional (3D) Fermion system. Following Sunakawa, introducing density and velocity operators, we treat 3D qua…
A practical scheme for constructing the minimum weight states of the su(n)-Lipkin model in arbitrary fermion number
Y. Tsue, C. Providencia, J. da Providencia +1
With the aim of performing an argument supplement to the previous paper by the present authors, in this paper, a practical scheme for constructing the minimum weight states of the…
Inequalities in Rényi's quantum thermodynamics
Natália Bebiano, João da Providência, João Pinheiro da Providência
A theory of thermodynamics has been recently formulated and derived on the basis of Rényi entropy and its relative versions. In this framework, we define the concepts of partition…
Non-Hermitian quantum mechanics of bosonic operators
Natália Bebiano João da Providência, João Pinheiro da Providência
The spectral analysis of a non-Hermitian unbounded operator appearing in quantum physics is our main concern. The properties of such an operator are essentially different from thos…
A note on the Lipkin model in arbitrary fermion number
Y. Tsue, C. Providencia, J. da Providencia +1
A possible form of the Lipkin model obeying the su(6)-algebra is presented. It is a natural generalization from the idea for the su(4)-algebra recently proposed by the present auth…