117 citations · 159 across the 8 of their papers we have counts for
4 papers · 1 filter
Local description of band rearrangements. Comparison of semi-quantum and full quantum approach
Toshihiro Iwai, Boris Zhilinskii
Rearrangement of rotation-vibration energy bands in isolated molecules within semi-quantum approach is characterized by delta-Chern invariants associated to a local semi-quantum Ha…
Qualitative features of the rearrangement of molecular energy spectra from a "wall-crossing" perspective
Boris Zhilinskii, Toshihiro Iwai
Qualitatively different systems of molecular energy bands are studied on example of a parametric family of effective Hamiltonians describing rotational structure of triply degenera…
Bipartite entanglement and control in multiqubit systems
Toshihiro Iwai, Yoshiro Yabu
The effect of the control on bipartite entanglement is discussed from a geometric viewpoint for a nuclear magnetic resonance (NMR) system as a model of the n-qubit control system.…
Reduction of Quantum Systems on Riemannian Manifolds with Symmetry and Application to Molecular Mechanics
Shogo Tanimura, Toshihiro Iwai
This paper deals with a general method for the reduction of quantum systems with symmetry. For a Riemannian manifold M admitting a compact Lie group G as an isometry group, the quo…