3 citations · 7 across the 5 of their papers we have counts for
5 papers
Note on bi-exactness for creation operators on Fock spaces
Kei Hasegawa, Yusuke Isono, Tomohiro Kanda
In this note, we introduce and study a notion of bi-exactness for creation operators acting on full, symmetric and anti-symmetric Fock spaces. This is a generalization of our previ…
Boundary and rigidity of nonsingular Bernoulli actions
Kei Hasegawa, Yusuke Isono, Tomohiro Kanda
Let be a countable discrete group and consider a nonsingular Bernoulli shift action with two base points. When is exa…
A model of Josephson Junctions on Boson Systems - Currents and Entropy Production Rate -
Tomohiro Kanda
Non-equilibrium steady states (NESS), in the sense of D. Ruelle, of Boson systems with Bose--Einstein condensation (BEC) are investigated with the aid of the C^*-algebraic method.…
Remarks on BEC on graphs
Tomohiro Kanda
We consider Bose--Einstein condensation (BEC) on graphs with transient adjacency matrix and obtain a quasi-free state exhibiting BEC is non-factor and decompose into generalized co…
KMS States of Weakly Coupled Anharmonic Crystals and the Resolvent CCR Algebra
T. Kanda, Taku Matsui
We consider equilibrium states of weakly coupled anharmonic quantum oscillators on Z. We consider the Resolvent CCR Algebra introduced by D.Buchholtz and H.Grundling, and we show t…