12 citations · 18 across the 6 of their papers we have counts for
6 papers
Quantum diffusion in the Harper model under polychromatic time-perturbation
Hiroaki S. Yamada, Kensuke S. Ikeda
Quantum dynamics of the Harper model with self-duality exhibits localized, diffusive, and ballistic states depending on the potential strength . By adding time-dependent harmoni…
Quantum Diffusion Induced by Small Quantum Chaos
Hiroaki S. Yamada, Kensuke S. Ikeda
It is demonstrated that quantum systems classically exhibiting strong and homogeneous chaos in a bounded region of the phase space can induce a global quantum diffusion. As an idea…
Localized-Diffusive and Ballistic-Diffusive Transitions in Kicked Incommensurate lattice
Hiroaki S. Yamada, Kensuke S. Ikeda
By using the kicked Harper model, the effect of dynamical perturbations to the localized and ballistic phases in aperiodic lattice systems is investigated. The transition from the…
Localization and delocalization properties in quasi-periodically driven one-dimensional disordered system
Hiroaki S. Yamada, Kensuke S. Ikeda
Localization and delocalization of quantum diffusion in time-continuous one-dimensional Anderson model perturbed by the quasi-periodic harmonic oscillations of colors is invest…
Localization and delocalization properties in quasi-periodically perturbed Kicked Harper and Harper models
Hiroaki S. Yamada, Kensuke S. Ikeda
We numerically study the single particle localization and delocalization phenomena of an initially localized wave packet in the kicked Harper model (KHM) and Harper model subjected…
Random hopping fermions on bipartite lattices: Density of states, inverse participation ratios, and their correlations in a strong disorder regime
H. Yamada, T. Fukui
We study Anderson localization of non-interacting random hopping fermions on bipartite lattices in two dimensions, focusing our attention to strong disorder features of the model.…