57 citations · 76 across the 3 of their papers we have counts for
9 papers
Revisiting excitation gaps in the fractional quantum Hall effect
Tongzhou Zhao, Koji Kudo, W. N. Faugno +2
Recent systematic measurements of the quantum well width dependence of the excitation gaps of fractional quantum Hall states in high mobility samples [Villegas Rosales {\it et al.}…
Higher-Order Topological Mott Insulator on the Pyrochlore Lattice
Yuichi Otsuka, Tsuneya Yoshida, Koji Kudo +2
We provide the first unbiased evidence for a higher-order topological Mott insulator in three dimensions by numerically exact quantum Monte Carlo simulations. This insulating phase…
Fate of fractional quantum Hall states in open quantum systems: characterization of correlated topological states for the full Liouvillian
Tsuneya Yoshida, Koji Kudo, Hosho Katsura +1
Despite previous extensive analysis of open quantum systems described by the Lindblad equation, it is unclear whether correlated topological states, such as fractional quantum Hall…
Adiabatic Heuristic Principle on a Torus and Generalized Streda Formula
Koji Kudo, Yasuhiro Hatsugai
Although the adiabatic heuristic argument of the fractional quantum Hall states has been successful, continuous modification of the flux/statistics of anyons is strictly prohibited…
Non-Hermitian fractional quantum Hall states
Tsuneya Yoshida, Koji Kudo, Yasuhiro Hatsugai
We demonstrate the emergence of a topological ordered phase for non-Hermitian systems. Specifically, we elucidate that systems with non-Hermitian two-body interactions show a fract…
Higher-order Topological Mott Insulators
Koji Kudo, Tsuneya Yoshida, Yasuhiro Hatsugai
We propose a new correlated topological state which we call a higher-order topological Mott insulator (HOTMI). This state exhibits a striking bulk-boundary correspondence due to el…