92 citations · 356 across the 14 of their papers we have counts for
14 papers
Candidate local parent Hamiltonian for 3/7 fractional quantum Hall effect
Koji Kudo, A. Sharma, G. J. Sreejith +1
While a parent Hamiltonian for Laughlin wave function has been long known in terms of the Haldane pseudopotentials, no parent Hamiltonians are known for the lowest-Landau-lev…
Superconductivity in a system of interacting spinful semions
Koji Kudo, Jonathan Schirmer
Non-interacting particles obeying certain fractional statistics have been predicted to exhibit superconductivity. We discuss the issue in an attractively interacting system of spin…
Exactly Solvable Hamiltonian for Non-Abelian Quasiparticles
Koji Kudo, A. Sharma, G. J. Sreejith +1
Particles obeying non-Abelian braid statistics have been predicted to emerge in the fractional quantum Hall effect. In particular, a model Hamiltonian with short-range three-body i…
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.}…
Adiabatic Continuity of the Spinful Quantum Hall States
Koji Kudo, Yasuhiro Hatsugai
By using the extended Hubbard model of anyons, we numerically demonstrate the adiabatic deformation of the spinful quantum Hall (QH) states by transmutation of statistical fluxes.…
Bulk-edge Correspondence in the Adiabatic Heuristic Principle
Koji Kudo, Yoshihito Kuno, Yasuhiro Hatsugai
Using the Laughlin's argument on a torus with two pin-holes, we numerically demonstrate that the discontinuities of the center-of-mass work well as an invariant of the pumping phen…
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…
Many-body Chern number without integration
Koji Kudo, Haruki Watanabe, Toshikaze Kariyado +1
The celebrated work of Niu, Thouless, and Wu demonstrated the quantization of Hall conductance in the presence of many-body interactions by revealing the many-body counterpart of t…
Fractional Quantum Hall Effect in n=0 Landau Band of Graphene with Chern Number Matrix
Koji Kudo, Yasuhiro Hatsugai
Fully taking into account of the honeycomb lattice structure, fractional quantum Hall states of graphene are considered by a pseudopotential projected into the n = 0 Landau band. B…
Many-Body Chern Numbers of and States on Various Lattices
Koji Kudo, Toshikaze Kariyado, Yasuhiro Hatsugai
For various two dimensional lattices such as honeycomb, kagome, and square-octagon, gauge conventions (string gauge) realizing minimum magnetic fluxes that are consistent with the…