Papers
Koji Kudo Ryota Nakai, Hiroki Isobe, J. K. Jain, and Kentaro Nomura
"Repulsive-Interaction-Driven Topological Superconductivity in a Landau Level Coupled to an s-Wave Superconductor"
Ryota Nakai, Koji Kudo Hiroki Isobe, and Kentaro Nomura
"Chirality-selective proximity effect between chiral p-wave superconductors and quantum Hall insulators"
Phys. Rev. B 112, 094520 (2025)
Koji Kudo, Ryota Nakai, Kentaro Nomura
"Quantum anomalous, spin, and valley Hall effects in pentalayer rhombohedral graphene moiré superlattices"
Phys. Rev. B 110, 245135 (2024)
Koji Kudo, Ryota Nakai, Kentaro Nomura
"Disorder-induced topological superconductivity in a spherical quantum-Hall--superconductor hybrid"
Phys. Rev. B 110, 035147 (2024)
Koji Kudo, Jonathan Schirmer, Jainendra K. Jain
"Crossover from Integer to Fractional Quantum Hall Effect"
Phys. Rev. B 109, 075157 (2024)
Koji Kudo, A. Sharma, G. J. Sreejith, and J. K. Jain
"Candidate local parent Hamiltonian for 3/7 fractional quantum Hall effect"
Phys. Rev. B 108, 085130, (2023)
Koji Kudo, A. Sharma, G. J. Sreejith, and J. K. Jain
"Exactly Solvable Hamiltonian for Non-Abelian Quasiparticles"
Phys. Rev. B 107, 115163(1-14), (2023)
Koji Kudo and Jonathan Schirmer
"Superconductivity in a system of interacting spinful semions"
Phys. Rev. B 106, 214517(1-9), (2022)
Tongzhou Zhao, Koji Kudo, W. N. Faugno, Ajit C. Balram, and J. K. Jain
"Revisiting excitation gaps in the fractional quantum Hall effect"
Phys. Rev. B 105, 205147(1-7), (2022)
Koji Kudo and Yasuhiro Hatsugai
"Adiabatic Continuity of the Spinful Quantum Hall States"
Phys. Rev. B 106, 075120(1-8), (2022)
Koji Kudo, Yoshihito Kuno, and Yasuhiro Hatsugai
"Bulk-edge Correspondence in the Adiabatic Heuristic Principle"
Phys. Rev. B 104, L241113(1-5), (2021)
Yuichi Otsuka, Tsuneya Yoshida, Koji Kudo, Seiji Yunoki, and Yasuhiro Hatsugai
"Higher-Order Topological Mott Insulator on the Pyrochlore Lattice"
Scientific Reports 11, 20270(1-7), (2021)
Tsuneya Yoshida, Koji Kudo, Hosho Katsura and Yasuhiro Hatsugai
"Fate of fractional quantum Hall states in open quantum systems: characterization of correlated topological states for the full Liouvillian"
Phys. Rev. Research 2, 033428(1-16), (2020)
Koji Kudo and Yasuhiro Hatsugai
"Adiabatic heuristic principle on a torus and generalized Streda formula"
Phys. Rev. B 102. 125108(1-6), (2020)
Tsuneya Yoshida, Koji Kudo, and Yasuhiro Hatsugai
"Non-Hermitian Fractional Quantum Hall States"
Scientific Reports 9, 16895(1-8), (2019)
Koji Kudo, Tsuneya Yoshida, and Yasuhiro Hatsugai
"Higher-order Topological Mott Insulators"
Phys. Rev. Lett. 123, 196402(1-6), (2019)
Koji Kudo, Haruki Watanabe, Toshikaze Kariyado, and Yasuhiro Hatsugai
"Many-body Chern Number without Integration"
Phys. Rev. Lett. 122, 146601(1-5), (2019) (Editors' Suggestion)
Koji Kudo, Yasuhiro Hatsugai
"Fractional Quantum Hall Effect in n=0 Landau Band of Graphene with Chern Number Matrix"
J. Phys. Soc. Jpn. 87, 063701(1-5), (2018)
Koji Kudo, Toshikaze Kariyado, and Yasuhiro Hatsugai
"Many-body Chern Numbers of ν=1/3 and 1/2 States on Various Lattices"
International conference
---Coming Event-------------------
---Past-------------------
Koji Kudo
"Many-body topological superconductivity in a half-filled Landau Level–superconductor hybrid system"
Quantum Transport Frontiers of Mesoscopic Physics
Tokyo, Oct. 20 - Oct. 22, 2025 (oral) <invited>
Koji Kudo, R. Nakai, and K. Nomura
"Quantum anomalous, spin, and valley Hall states in pentalayer rhombohedral graphene moiré superlattices"
APS March Meeting 2025
Anaheim, Mar. 16 - Mar. 21, 2025 (oral).
Koji Kudo
"Quantum anomalous, spin, and valley Hall phases in pentalayer graphene moiré superlattice"
New Trends in Condensed Matter Theory 2024
Tokyo, Dec. 9 - Dec. 11, 2024 (oral) <invited>
Koji Kudo
"Disorder-induced topological superconductivity in a quantum-Hall--superconductor hybrid"
Trends in the Theory of Quantum Materials
Fribourg, June 17 - June 19, 2024 (oral) <invited>
Koji Kudo, A. Sharma, G. J. Sreejith, and J. K. Jain
" Candidate parent Hamiltonian for the 3/7 fractional quantum Hall state "
APS March Meeting 2024
Minneapolis, Mar. 4 - Mar. 8, 2024 (oral).
Koji Kudo, A. Sharma, G. J. Sreejith, and J. K. Jain
"Exact Hamiltonian for non-Abelian quasiparticle states "
APS March Meeting 2023
Las Vegas, Mar. 5 - Mar. 10, 2023 (oral).
Koji Kudo, Yoshihito Kuno and Yasuhiro Hatsugai
"Fractional charge pumping of anyons and the adiabatic heuristic principle"
APS March Meeting 2022
Online, Mar. 14- Mar. 18, 2022 (oral).
Koji Kudo and Yasuhiro Hatsugai
"Generalized Streda formula of the spinful quantum Hall systems"
BE/BC2022
Online, Feb. 11- Feb. 13, 2022 (poster)
Koji Kudo, Yoshihito Kuno and Yasuhiro Hatsugai
"Adiabatic Heuristic Argument on a Torus: Topological Degeneracy and Many-body Chern Number"
EP2DS-24/MSS-20
Online, Oct. 31- Nov. 5, 2021 (oral).
Koji Kudo and Yasuhiro Hatsugai
"Generalized Streda formula in the adiabatic heuristic principle"
APS March Meeting 2021
Online, Mar. 15-19, 2021 (oral).
Koji Kudo, Tsuneya Yoshida and Yasuhiro Hatsugai
"Correlated bulk-boundary correspondence of the higher-order topological insulator"
APS March Meeting 2020
USA, Denver, Mar. 2-6, 2020 (oral) (canceled).
Koji Kudo, and Yasuhiro Hatsugai
"Numerical Study of Adiabatic Heuristic for the Quantum Hall States"
BE/BC2020F
Japan, Tokyo, Feb. 28-29, 2020 (poster) (online)
Koji Kudo, Tsuneya Yoshida and Yasuhiro Hatsugai
"Higher-order bulk-boundary correspondence of a topological Mott insulator"
International Conference on Topological Materials Science 2019 (TopoMat2019):
Japan, Kyoto, Dec. 3-7, 2019 (poster).
Koji Kudo, Tsuneya Yoshida and Yasuhiro Hatsugai
"Mott physics of the higher-order topological insulator on the kagome lattice"
Trends in Theory of Correlated Materials (TTCM2019)
Japan, Kyoto, Oct. 7-9, 2019 (poster)
Koji Kudo, Tsuneya Yoshida and Yasuhiro Hatsugai
"Higher-Order Topological Mott Insulator on the Kagome Lattice"
International Conference on Strongly Correlated Electron Systems (SCES) 2019
Japan, Okayama, Sep. 23-28, 2019 (poster).
Koji Kudo, Tsuneya Yoshida and Yasuhiro Hatsugai
"Hubbard model on the kagome lattice and higher-order topological Mott insulators"
New Trends in Topological Insulators 2019 & Variety and Universality of Bulk-edge Correspondence in Topological Phases 2019
Japan, Hiroshima, July 14-19, 2019 (poster)
Koji Kudo, Tsuneya Yoshida and Yasuhiro Hatsugai
"Correlated higher-order topological insulator on kagome lattice"
International Conference on Frontiers of Correlated Electron Sciences (FCES19)
Japan, Tokyo, May. 29-31, 2019 (poster)
Koji Kudo, Haruki Watanabe, Toshikaze Kariyado and Yasuhiro Hatsugai
"Exponential precision of Chern number without integration by twisted angles"
Synthetic Topological Matter
Germany, Dresden, May. 20-24, 2019 (poster).
Koji Kudo, Haruki Watanabe, Toshikaze Kariyado and Yasuhiro Hatsugai
"One-plaquette Chern number: Many-body Chern number without integration"
APS March Meeting 2019
USA, Boston, Mar. 4-8, 2019 (oral).
Koji Kudo, Haruki Watanabe, Toshikaze Kariyado and Yasuhiro Hatsugai
"Exponential accuracy of many-body Chern number without integration"
Bulk-Edge Correspondence 2018X (BEC2018X)
Japan, Tokyo, Dec. 9-13, 2018 (poster)
Koji Kudo, and Yasuhiro Hatsugai
"Halperin 331 state of the FQH system of the n=0 Landau band of graphene"
The 23rd International Conference on High Magnetic Fields in Semiconductor Physics (HMF-23)
France, Toulouse, July 22-27, 2018 (poster).
Koji Kudo, and Yasuhiro Hatsugai
"Many-body Chern number matrix in fractional quantum Hall effect of graphene"
International Workshop on SYMMETRY & TOPOLOGY in Condensed-Matter physics
Japan, Tokyo, June 19-21, 2018 (poster)
Koji Kudo, and Yasuhiro Hatsugai
"Quantum Phase Transitions in Fractional Quantum Hall Effect of Graphene: Many-body Chern Number and Chirality Ferromagnetism"
APS March Meeting 2018
USA, Los Angeles, Mar. 5-9, 2018 (oral).
Koji Kudo, and Yasuhiro Hatsugai
"Chern matrices associated with chiral basis for FQH system in graphene"
BEC2018 (Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts)
Japan, Tsukuba, Jan. 4-8, 2018 (poster)
Koji Kudo, and Yasuhiro Hatsugai
"The fractional quantum hall effect and chirality on honeycomb lattice"
Novel Quantum States in Condensed Matter 2017 (NQS2017)
Japan, Kyoto, Oct. 30-Nov. 3, 2017 (poster)
Koji Kudo, and Yasuhiro Hatsugai
"Many-body states of a nearly flat band with kagome lattice""
Trends in Theory of Correlated Materials (TTCM2017)
Japan, Tsukuba, Sept. 10-13, 2017 (poster)
Koji Kudo, Toshikaze Kariyado, Yasuhiro Hatsugai
"Many-Body States of a Projected Landau-Hofstadter Band on Various Lattices"
EP2DS (International Conference on Electronic Properties of Two-Dimensional Systems; it started as EP”Quasi-“2DS)
USA, State College, July 31- Aug. 4, 2017 (poster).
Koji Kudo, Toshikaze Kariyado, Yasuhiro Hatsugai
"Chern number of many-body states on various lattices"
APS March Meeting 2017
USA, New Orleans, Mar. 13-17, 2017 (poster).
Koji Kudo, Toshikaze Kariyado, Yasuhiro Hatsugai
"Chern number of fractional quantum Hall effects on a kagome lattice"
Yukawa Institute for Theoretical Physics (YITP) international workshop
Japan, Kyoto, Sept. 27-30, 2016 (poster)
Domestic Conference
---Coming Event-------------------
Koji Kudo, R. Nakai, H. Isobe, and K. Nomura
"Many-body topological superconductivity in a half-filled Landau Level–superconductor hybrid"
80th Annual Meeting (2025), The Physical Society of Japan
Hiroshima Univ., Sept. 16-19, 2025 (oral)
---Past-------------------
Koji Kudo
"Quantum anomalous, quantum spin, and quantum valley Hall effects in pentalayer graphene"
Emergent Quantum Phenomena in Condensed Matter: Anyons, Edge States, and Hybrid Quantum Systems
Kyoto Univ, Jun 25-27, 2025 (oral)
Koji Kudo, R. Nakai, and K. Nomura
"Quantum anomalous/spin/valley Hall effects in pentalayer graphene moiré superlattice"
79th Annual Meeting (2024), The Physical Society of Japan
Hokkaido Univ., Sept. 16-19, 2024 (oral)
Koji Kudo, R. Nakai, and K. Nomura
"Disorder-driven topological superconductivity in a quantum-Hall--superconductor hybrid"
Frontiers in Emergent Quantum Phenomena: Superconducting Junctions, Edges, and Anyons
Kyoto Univ, May 29-31, 2024 (oral)
Koji Kudo, R. Nakai, and K. Nomura
"Disorder-driven topological superconductivity in a hybrid quantum Hall-superconductor system"
Spring Meeting 2024, The Physical Society of Japan
Virtual, Mar. 18-21, 2024 (oral)
Koji Kudo, A. Sharma, G. J. Sreejith, and J. K. Jain
"Parent Hamiltonian for the 3/7 composite fermion state"
Spring Meeting 2024, The Physical Society of Japan
Virtual, Mar. 18-21, 2024 (oral)
Koji Kudo, A. Sharma, G. J. Sreejith, and J. K. Jain
"Exactly solvable model for non-Abelian quasiparticles"
78th Annual Meeting (2023), The Physical Society of Japan
Tohoku Univ., Sept. 16-19, 2023 (oral)
Koji Kudo
"Construction of an exactly solvable model for quasielectron states"
Frontiers of anyon physics in condensed matter
Tokyo Univ., March. 13-14, 2023 (oral) <invited>
Koji Kudo, Yasuhiro Hatsugai
"Adiabatic deformation of quantum Hall systems and its possible application"
2021 Autumn Meeting, The Physical Society of Japan
Online, Sept. 20-23, 2021 (oral)
Koji Kudo
"Adiabatic heuristic principle on a torus and anyon pumping"
"Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts" 8th Informal Meeting
Online, Mar. 26, 29, 30, 2021 (oral) <invited>
Koji Kudo, Yoshito Kuno Yasuhiro Hatsugai
"Anyon pump and bulk-edge correspondence"
76th Annual Meeting (2021), The Physical Society of Japan
Online, Mar. 12-15, 2021 (oral)
Koji Kudo, Yasuhiro Hatsugai
"Generalization of the Streda formula for the fractional quantum Hall systems"
2020 Autumn Meeting, The Physical Society of Japan
Online, Sept. 8-11, 2020 (oral)
Koji Kudo, Yasuhiro Hatsugai
"Quantum Hall state of multicomponent anyons on a torus and the adiabatic heuristic"
75th Annual Meeting (2020), The Physical Society of Japan
Nagoya Univ., Mar. 16-19, 2020 (oral) (online)
Koji Kudo, Yasuhiro Hatsugai
"Numerical analysis of adiabatic heuristic "
2019 Autumn Meeting, The Physical Society of Japan
Gifu Univ., Sept. 10-13, 2019 (oral)
Koji Kudo, Tsuneya Yoshida, Yasuhiro Hatsugai
"Electron correlation of higher-order topological insulator on kagome lattice"
74th Annual Meeting (2019), The Physical Society of Japan
Kyushu Univ., Mar. 14-17, 2019 (oral)
Koji Kudo, Haruki Watanabe, Toshikaze Kariyado, Yasuhiro Hatsugai
"Convergence of many-body Chern number "
2018 Autumn Meeting, The Physical Society of Japan
Doshisha Univ., Sept. 9-12, 2018 (oral)
Koji Kudo
"Fractional quantum Hall effect of graphene and Chern number matrix"
"Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to transdisciplinary concepts" Informal Workshop
Univ. of Tsukuba, May 19-20, 2018 (oral) <invited>
Koji Kudo, Yasuhiro Hatsugai
"Chern matrices in fractional quantum Hall phases of graphene"
73rd Annual Meeting (2018), The Physical Society of Japan
Tokyo Univ. of Science, Mar. 22-25, 2018 (oral)
Koji Kudo, Yasuhiro Hatsugai
"Electron-electron interaction on a flat band with kagome lattice "
2017 Autumn Meeting, The Physical Society of Japan
Iwate Univ., Sept. 21-24, 2017 (oral)
Koji Kudo, Toshikaze Kariyado, Yasuhiro Hatsugai
"Projected electron-electron interaction of Landau-Hofstadter bands on several lattices"
1st Research conference for Grant-in-Aid for Scientific Research S (17H06138)
Univ. of Tsukuba, June 25, 2017 (poster)
Koji Kudo, Yasuhiro Hatsugai
"Quantum phase transition of the fractional quantum Hall states on a honeycomb lattice "
6th Research conference for Grant-in-Aid for Scientific Research A (26247064)
Univ. of Tsukuba, Mar. 22-23, 2017 (poster)
Koji Kudo, Yasuhiro Hatsugai
"Exact diagonalization of pseudopotentials of lattice models with magnetic field: instability of Laughlin state"
72nd Annual Meeting (2017), The Physical Society of Japan
Osaka Univ., Mar. 17-20, 2017 (oral)
Koji Kudo, Toshikaze Kariyado, Yasuhiro Hatsugai
"Chern number and property of many-particle states on lattice models"
10th Joint Research Meeting of MEXT National Projects on Condensed-Matter Science
Kobe Univ., Dec. 9-10, 2016 (poster)
Koji Kudo, Toshikaze Kariyado, Yasuhiro Hatsugai
"Chern number of fractional quantum Hall effects on a kagome lattice"
2016 Autumn Meeting, The Physical Society of Japan
Kanazawa Univ., Sept. 13-16, 2016 (oral)
Koji Kudo, Toshikaze Kariyado, Yasuhiro Hatsugai
"Laughlin state on a kagome lattice and Chern number"
Condensed Matter Physics Summer School
Nagano, July 29- Aug. 2, 2016 (poster)
Koji Kudo, Toshikaze Kariyado, Yasuhiro Hatsugai
"Electron-electron interaction and Chern number of two-dimensional electrons in a magnetic field"
4th Research conference for Grant-in-Aid for Scientific Research A (26247064)
Univ. of Tsukuba, Mar. 25-26, 2016 (poster)
Awards
The Provost Prize for Graduate School of Pure and Applied Sciences
Univ. of Tsukuba, Mar. 25, 2021
Poster Prize
10th Joint Research Meeting of MEXT National Projects on Condensed-Matter Science
Kobe Univ., Dec. 9-10, 2016