4 papers
Markovianity and non-Markovianity of Particle Bath with Dirac Dispersion Relation
Takano Taira, Naomichi Hatano, Akinori Nishino
The dynamics of a two-level system coupled to a particle bath with the Dirac dispersion relation is studied. We analytically show that closing the Dirac gap results in a transition…
Quantum walk with a local spin interaction
Manami Yamagishi, Naomichi Hatano, Kohei Kawabata +4
We introduce a model of quantum walkers interacting with a magnetic impurity localized at the origin. First, we study a model of a single quantum walker interacting with a localize…
Exact time-evolving resonant states for open double quantum-dot systems with spin degrees of freedom
Akinori Nishino, Naomichi Hatano
We study time-evolving resonant states in an open double quantum-dot system, taking into account spin degrees of freedom as well as both on-dot and interdot Coulomb interactions. W…
Exact time-evolving scattering states in open quantum-dot systems with an interaction: Discovery of time-evolving resonant states
Akinori Nishino, Naomichi Hatano
We study exact time-evolving many-electron states of an open double quantum-dot system with an interdot Coulomb interaction. A systematic construction of the time-evolving states f…