14 citations · 46 across the 9 of their papers we have counts for
9 papers
Open Quadratic Fermion Systems and Algebras of Affine Transformations
Hiroshi Tamura
We study evolution of open quadratic fermion systems in the framework of the quantum Markovian semigroup approach. We show that the algebra concerning commutators of Liouvillians f…
On the open Dicke-type model generated by an infinite-component vector spin
Ryota Kyokawa, Hajime Moriya, Hiroshi Tamura
We consider an open Dicke model comprising a single infinite-component vector spin and a single-mode harmonic oscillator which are connected by Jaynes--Cummings-type interaction be…
Dynamical Semigroups for Unbounded Repeated Perturbation of Open System
Hiroshi Tamura, Valentin Zagrebnov
We consider dynamical semigroups with unbounded Kossakowski-Lindblad-Davies generators which are related to evolution of an open system with a tuned repeated harmonic perturbation.…
Dynamics of an Open System for Repeated Harmonic Perturbation
Hiroshi Tamura, Valentin A. Zagrebnov
We use the Kossakowski-Lindblad-Davies formalism to consider an open system defined as the Markovian extension of one-mode quantum oscillator S, perturbed by a piecewise stationary…
A Dynamics Driven by Repeated Harmonic Perturbations
Hiroshi Tamura, Valentin Zagrebnov
We propose an exactly soluble W*-dynamical system generated by repeated harmonic perturbations of the one-mode quantum oscillator. In the present paper we deal with the case of iso…
Random point field approach to analysis of anisotropic Bose-Einstein condensations
Hiroshi Tamura, Valentin A. Zagrebnov
Position distributions of constituent particles of the perfect Bose-gas trapped in exponentially and polynomially anisotropic boxes are investigated by means of the boson random po…