Three-Dimensional Topological States in the Absence of Fundamental Symmetries [an abstract of dissertation and a summary of dissertation review]

Classification of topological states with symmetries

Topological Phenomena in Quantum Walks owing to Peculiarity of Floquet and/or Open Systems [an abstract of dissertation and a summary of dissertation review]

Analysis on the Degeneracy of the Ground State in Quantum Field Models [an abstract of dissertation and a summary of dissertation review]

Quantum field theoretic descriptions of topological phases in two and three dimensions

New topological invariants and real-space constructions of topological states protected by magnetic space group symmetries

Studies on the Generalized Spin-Boson Models [an abstract of dissertation and a summary of dissertation review]