Directors Director / Division Director (concurrent) Satoshi Iso Deputy Director / Division Director (concurrent) / Associate Division Director (concurrent) Tsukasa Tada Theoretical Particle Physics Deputy Director / Associate Division Director (concurrent) Yoshimasa Hidaka Theoretical Physics Deputy Director / Associate Division Director (concurrent) Catherine Beauchemin Virophysics Deputy Director / Associate Division Director (concurrent) Yasuyuki Kawahigashi Operator Algebras Deputy Director (concurrent) / Associate Division Director (concurrent) Shigehiro Nagataki Extreme Universe Division Director (concurrent) Tetsuo Hatsuda Particle and Nuclear Physics Division Director (concurrent) Tomoya Nagai R&D Administration, Science Communication Scientific Advisors Senior Advisor Shigefumi Mori Mathematics, Algebraic Geometry Senior Advisor Yoh Iwasa Mathematical Biology Senior Advisor Makoto Kobayashi Theoretical Particle Physics Senior Advisor Masato Wakayama Mathematics Coordinator Coordinator Tomoya Nagai R&D Administration, Science Communication Researchers, Division of Fundamental Mathematical Science Senior Research Scientist Takumi Doi Computational Particle and Nuclear Physics Senior Research Scientist Gen Kurosawa Theoretical Biology Senior Research Scientist Ryosuke Iritani Mathematical Biology, Evolution, Ecology Senior Research Scientist Shunji Matsuura Quantum Computing Senior Research Scientist Ching-Kai Chiu Condensed Matter Physics Senior Research Scientist Ryo Namba Theoretical Cosmology, Gravitational Theory Senior Research Scientist Masazumi Honda Theoretical Physics, High Energy Theory, Quantum Computation, Mathematical Physics Senior Research Scientist Masamichi Miyaji Theoretical physics, Quantum Gravity Senior Research Scientist Kantaro Omori Quantum Field Theory, Mathematical Physics Senior Research Scientist (concurrent) Akinori Tanaka Machine Learning, Mathematical Physics Senior Research Scientist (concurrent) Ryusuke Hamazaki Statistical Mechanics Research Scientist Kyosuke Adachi Biophysics, Condensed Matter Physics Research Scientist José Said Gutiérrez-Ortega Evolutionary Biology, Ecology Research Scientist Yuto Moriwaki Mathematical Physics, Representation theory Research Scientist Derek Beattie Inman Theoretical and Computational Cosmology Research Scientist Camilia Demidem Theoretical and Computational Approaches in High-Energy Astrophysics Research Scientist Lingxiao Wang Particle and Nuclear Physics, Machine Learning, AI for Science Research Scientist Shuntaro Aoki Cosmology, Particle Physics Research Scientist Sotaro Sugishita Research Scientist Vladimir Sosnilo Homotopy Theory, Category Theory, Algebraic Geometry Research Scientist Zhe Wang Mathematical Physics, Integrable Systems Research Scientist Sungsik Kong Phylogenetic Methods, Computational Evolutionary Biology Research Scientist Hiromi Ebisu Theoretical Physics, condensed matter theory, Research Scientist Yuya Murakami Number Theory, Topology Research Scientist (concurrent) Akira Mizuta Special Postdoctoral Researcher Christy Koji Kelly Gravity, Lorentzian Geometry, Lorentzian Optimal Transport Theory, Discrete Curvature Special Postdoctoral Researcher Thomas Hitchcock Evolution, Ecology, Genetics Special Postdoctoral Researcher Che-Yu Chen Gravitational Theory, Black Hole Physics Special Postdoctoral Researcher Yuto Yamamoto Algebraic Geometry, Tropical Geometry Special Postdoctoral Researcher Junnosuke Koizumi Algebraic Geometry, Arithmetic Geometry Special Postdoctoral Researcher Kan Kitamura Operator Algebras, Quantum Symmetries Special Postdoctoral Researcher Osamu Fukushima Theoretical Physics, Quantum Field Theory, Integrable System Special Postdoctoral Researcher Okuto Morikawa Theoretical Physics, Quantum Field Theory, Non-perturbative Formulation and Simulation Special Postdoctoral Researcher Takashi Satomi Harmonic Analysis, Functional Analysis Special Postdoctoral Researcher Kenji Okubo Evolutionary Biology, Theoretical Biology, Mathematical Biology, Biophysics, Network Science, Cultural Evolution, Mathematical Archaeology, Mathematical Linguistics Special Postdoctoral Researcher Daichi Takeda Theoretical Physics, High Energy Physics, Quantum Gravity, Holographic Principle Special Postdoctoral Researcher Keiya Hirashima Galaxy Formation and Evolution, AI, High-Performance Computing Special Postdoctoral Researcher Shoto Aoki Lattice Gauge Theory, Mathematical Physics Special Postdoctoral Researcher Álvaro Pastor Gutiérrez High-Energy Physics, Quantum Field Theory, BSM Physics, Non-Perturbative Methods Special Postdoctoral Researcher Chi-Kang Chang Algebraic Geometry, Birational Geometry Special Postdoctoral Researcher Wei-Hsiang Shao High Energy Theory, Quantum Gravity Special Postdoctoral Researcher Riccardo Muolo Nonlinear dynamics, synchronization, dynamics on networks and higher-order structures Special Postdoctoral Researcher (concurrent) Akira Dohi Nuclear Astrophysics Postdoctoral Researcher Puttarak Jai-akson Theoretical Physics, Classical/Quantum Gravity Postdoctoral Researcher Amaury Micheli Theoretical Cosmology, Quantum Entanglement Postdoctoral Researcher Rento Yamada Postdoctoral Researcher Isaac Planas Sitja Mathematical Genomics RIKEN ECL Research Unit, Division of Fundamental Mathematical ScienceDetails RIKEN ECL Research Unit Leader Leo Speidel Postdoctoral Researcher Lucas Sort Biostatistics, Machine Learning, Statistical Genetics Postdoctoral Researcher Aina Colomer i Vilaplana AI for Science Team, Division of Applied Mathematical ScienceDetails Team Director (concurrent) Satoshi Iso Mathematical Application Research Team, Division of Applied Mathematical Science Team Director (concurrent) Motoko Kotani Geometry Deputy Team Director (concurrent) Tsukasa Tada Theoretical Particle Physics Research Scientist Taketo Sano Low-Dimensional Topology, Knot Theory Research Scientist Antoine Diez Mathematical Biology, Partial Differential Equations, Stochastic Processes, Agent-Based Modeling, Kinetic Theory, In Silico Modeling Assistant (concurrent) Yuko Kawatsu Quantum Mathematical Science Team, Division of Applied Mathematical ScienceDetails Team Director (concurrent) Tetsuo Hatsuda Particle and Nuclear Physics Senior Research Scientist Erik Loetstedt Computational Physics, Computational Chemistry, Strong-Field Science, Quantum Computing Senior Research Scientist Arata Yamamoto Particle and Nuclear Physics, Lattice Gauge Theory Senior Research Scientist (concurrent) Yuji Sugita Theoretical Chemistry Senior Research Scientist (concurrent) Tomonori Shirakawa Condensed Matter Physics Research Scientist Himadri Pathak Atomic, Molecular, and Optical Physics, Quantum Chemistry Postdoctoral Researcher Yuta Sekino Condensed Matter Physics, Ultracold Atoms, Quantum Simulation Postdoctoral Researcher Xiaoyang Wang Quantum Computation, High Energy Physics, Computer Science Postdoctoral Researcher Tianyin Li Research Consultant Masanao Ozawa Foundations of Quantum Theory, Quantum Information Visiting Scientist Tomoya Naito Quantum Many-Body Problems (Computational), Nuclear Physics Visiting Scientist Atsushi Iriki Cognitive Neurobiology Visiting Scientist Noritaka Shimizu Visiting Scientist Takashi Abe Coordinator (concurrent) Shinichiro Fujii Nuclear Theory, Project Management Junior Research Associate / Student Trainee (concurrent) Haruki Emori Foundations of Quantum Theory, Quantum measurement theory, Quantum Information theory Student Trainee (concurrent) Tingyu Zhang Assistant Yuko Kawatsu Assistant (concurrent) Masae Takano Assistant (concurrent) Machiko Ishigaki Assistant (concurrent) Kazue Akiyama Assistant (concurrent) Masako Hirata Assistant (concurrent) Makiko Nakanishi Medical Science Data-driven Mathematics Team, Division of Applied Mathematical ScienceDetails Team Director Eiryo Kawakami Senior Research Scientist Satoru Sugimoto Medical Data Science Postdoctoral Researcher Ruiming Li Postdoctoral Researcher Megumi Oya Postdoctoral Researcher Xuyang Zhao Machine Learning for Medical Postdoctoral Researcher (concurrent) Hikaru Sugimoto Senior Visiting Scientist Tetsuo Ishikawa Data-driven Medical Sciences, Machine Learning for Healthcare Visiting Scientist Keita Koseki Visiting Scientist Shinji Nakaoka Visiting Scientist Yuki Goshima Visiting Scientist Tazro Ohta Bioinformatics Student Trainee Yuji Okano Technical Staff I Ayaka Hananoe Technical Staff Ⅱ (concurrent) Ayaka Mori Research Part-time Worker Ⅱ Soki Osawa Medical Science Deep Learning Team, Division of Applied Mathematical ScienceDetails Team Director Jun Seita Senior Research Scientist Naoki Nonaka Postdoctoral Researcher Dorothy Ellis Biostatistics, Omics (Multiomics, Genomics, Epigenomics, Transcriptomics), Bioinformatics, Machine Learning Technical Scientist (concurrent) Yukiko Yanagisawa Technical Staff II (concurrent) Kazumi Yamada Prediction Science Research Team, Division of Applied Mathematical ScienceDetails Team Director (concurrent) Takemasa Miyoshi Data Assimilation Senior Research Scientist (concurrent) Shigenori Otsuka Data Assimilation Research Scientist (concurrent) Shun Ohishi Research Scientist (concurrent) Michael Goodliff Data Assimilation, Machine Learning, Applied Mathematics Research Scientist (concurrent) James Taylor Research Scientist (concurrent) Tristan Hascoet Postdoctoral Researcher Yuta Tarumi Postdoctoral Researcher Unashish Mondal Data Assimilation Senior Visiting Scientist Takashi Sakajo Applied Mathematics (Mathematical Fluid Dynamics) Visiting Scientist Pierre Tandeo Visiting Scientist Juan Ruiz Visiting Scientist Luciano Vidal Research Fellow Matsudo Cynthia Research Fellow Marina Lagos Research Fellow Martin Rugna Research Fellow Sebastian Lopez Research Fellow Leandro Aguirre Research Fellow Gimena Casaretto Research Associate Shungo Tonoyama Research Associate (concurrent) Tatsuro Iwanaka Technical Staff I (concurrent) Ishimizu Takahisa Assistant (concurrent) Saeko Imano Assistant (concurrent) Yukie Komori Administrative Part-time Worker I Asami Nikaido Mathematical Social Science Team, Division of Applied Mathematical Science Team Director Yohsuke Murase Research Scientist (concurrent) Nikoleta E. Glynatsi Game Theory, Computational Social Science Visiting Scientist Takayuki Mizuno Kyushu University Collaboration Team, Division of Global Collaborations and Research Talent DevelopmentDetails Team Director Ryoko Oishi-Tomiyasu RIKEN-Berkeley Center, Division of Global Collaborations and Research Talent DevelopmentDetails RIKENｰBerkeley Center Director (concurrent) Shigehiro Nagataki Extreme Universe Postdoctoral Researcher Yan Lyu Hadronic Physics, Lattice Gauge Field Theory Postdoctoral Researcher Jan Schuette-Engel Particle Physics, Astroparticle Physics, Cosmology Postdoctoral Researcher Gabriele Di Ubaldo Theoretical Physics, Conformal Field Theory, Quantum Gravity, Quantum Chaos Postdoctoral Researcher Yuuka Kanakubo High-Energy Physics, Nuclear Theory Visiting Scientist Yasunori Nomura Quantum Gravity, Cosmology, Particle Physics Research Consultants, Division of Fundamental Mathematical Science Research Consultant Kazuo Fujikawa Particle theory, Quantum science Research Consultant Koichi Yazaki Nuclear and Hadron Physics Research Consultant Takeo Inami Senior Visiting Scientists, Division of Fundamental Mathematical Science Senior Visiting Scientist Atsushi Mochizuki Theoretical Biology Senior Visiting Scientist Takashi Tsuboi Topology, Dynamical Systems Senior Visiting Scientist Gordon Baym Quantum Many-body Theory Senior Visiting Scientist Hiroshi Suito Applied Mathematics, Computational Fluid Dynamics Senior Visiting Scientist Wick C. Haxton Nuclear Astrophysics Senior Visiting Scientist Hideaki Aoyama Elementary Particle Theory, Mathematical Linguistics, Econophysics Senior Visiting Scientist Takashi Sakajo Applied Mathematics (Mathematical Fluid Dynamics) Senior Visiting Scientist Hidetoshi Nishimori Statistical Mechanics, Quantum Computation Senior Visiting Scientist Junichi Chikazoe Senior Visiting Scientist Koji Fujiwara Senior Visiting Scientist (concurrent) Kazuyuki Aihara Mathematical Engineering Visiting Scientists (SUURI-COOL), Division of Fundamental Mathematical Science Visiting Scientist Masato Itami Statistical Physics Visiting Scientist Sonia Mahmoudi Mathematics, Topology Visiting Scientists (iTHEMS Alumni), Division of Fundamental Mathematical Science Visiting Scientist Shun Furusawa Astrophysics, Nuclear Physics Visiting Scientist Yosuke Kubota Mathematics, Index Theorem Visiting Scientist Hidetoshi Taya Physics Visiting Scientist Masashi Tachikawa Cell Biology, Biophysics Visiting Scientist Masato Taki Mathematical Physics, Machine Learning Visiting Scientist Yoshiyuki Inoue High Energy Astrophysics Visiting Scientist Jeffrey Fawcett Genome Evolution Visiting Scientist Don Warren Cosmic Rays, Gamma-ray Bursts, Virology Visiting Scientist Yuka Kotorii Mathematics, Topology Visiting Scientist Genki Ouchi Mathematics, Algebraic Geometry Visiting Scientist Tomoki Ozawa Condensed Matter Physics, AMO Physics, Topological Insulator Visiting Scientist Takashi Okada Mathematical Biology Visiting Scientist Masaru Hongo Particle and Nuclear Physics, Nonequilibrium physics Visiting Scientist Ade Irma Suriajaya Analytic Number Theory Visiting Scientist Shingo Gibo Theoretical Biology, Nonlinear Oscillation, Acoustic Engineering Visiting Scientist Masahiro Nozaki Elementary Particle Physics, Quantum Information Visiting Scientist Gilles Ferrand Astrophysics Visiting Scientist Yongjia Huang High Energy Astrophysics, Gravitational Wave Astrophysics Visiting Scientist Takuya Sugiura Theoretical Nuclear and Hadronic Physics Visiting Scientist Hokuto Konno Mathematics, Geometry and Topology Visiting Scientist Nagisa Hiroshima Dark Matter, High Energy Astrophysics Visiting Scientist Hiroshi Yokota Polymer Physics Visiting Scientist Kanato Goto High Energy Theory, String Theory, Quantum Gravity Visiting Scientist Kenta Sato Mathematics, Algebraic Geometry Visiting Scientist Keita Mikami Mathematics, Analysis, Partial Differential Equations Visiting Scientist Hajime Sotani Nuclear Astrophysics Visiting Scientist Hui Tong Nuclear Theory Visiting Scientist Yukimi Goto Mathematics Visiting Scientist Naomi Tsuji Astrophysics Visiting Scientist Euki Yazaki Genome Evolution, Molecular phylogeny, Protistology Visiting Scientist Masaki Taniguchi Mathematics, Topology Visiting Scientist Takeru Yokota Theoretical Physics, Many-body Problems Visiting Scientist Kazuki Kannaka Mathematics Visiting Scientist Akira Harada Physics, Space Science Visiting Scientist Yingying Xu Mathematical Sciences Visiting Scientist Yuya Kusuki Physics Visiting Scientist Michiya Mori Mathematics, Physics Visiting Scientist Naritaka Oshita Quantum/Classical Gravity, Cosmology, Quantum Field Theory Visiting Scientist Eiji Inoue Mathematics Visiting Scientist Etsuko Itou Particle and Nuclear Physics, Lattice QCD, Quantum Computing Visiting Scientist Yalong Cao Algebraic Geometry, Mathematical Physics Visiting Scientist Kotaro Murakami Physics Visiting Scientist Shou Yoshikawa Algebraic Geometry Visiting Scientist Akira Matsumoto Theoretical Particle Physics, Lattice Gauge Theory, Quantum Computing Visiting Scientist Maria Manuela Saez Neutrino Physics, Astroparticles Visiting Scientist Ermal Rrapaj Nuclear Astrophysics, Quantum Computing Visiting Scientist Kohei Hayashi Probability Theory Visiting Scientist Lucy McNeill Astrophysics Visiting Scientist Akihisa Yamamoto Biomedical Engineering, Soft-matter Physics, Biophysics Visiting Scientists (iTHEMS Alumni), Division of Global Collaborations and Research Talent Development Visiting Scientist Seishiro Ono Quantum Condensed Matter Physics Visiting Scientist Misako Tatsuuma Planet Formation Theory Visiting Scientist Dongwook Ghim String Theory, Quantum Computation Visiting Scientist Yuki Fujimoto Visiting Scientists (Academia), Division of Fundamental Mathematical Science Visiting Scientist Shinya Wanajo Cosmo-nuclear Science Visiting Scientist Hiroshi Kokubu Dynamical Systems and Applications Visiting Scientist Koutarou Kyutoku Gravitational-wave Astronomy Visiting Scientist Christopher Bourne Mathematics, Operator Algebras, Topological Phases Visiting Scientist Koya Sakakibara Numerical Analysis, Mathematical Fluid Dynamics Visiting Scientist Kentaro Takami Theoretical Astrophysics Visiting Scientist Yuji Sakai Theoretical Biology Visiting Scientist Shunsuke Kobayashi Applied mathematics Visiting Scientist Takahiro Doi Visiting Scientist Yuki Kamiya Physics Visiting Scientist Tetsuo Hyodo Physics Visiting Scientist Yoichi Ikeda Hadron and Nuclear Physics Visiting Scientist Shingo Iwami Mathematical Sciences, Life Sciences Visiting Scientist Kenji Sasaki Visiting Scientist Tomoya Hayata Particle and Nuclear Physics Visiting Scientist Haozhao Liang Visiting Scientist Takashi Inoue Visiting Scientist Faisal Etminan Visiting Scientist Wataru Souma Visiting Scientist Hiroshi Suzuki Visiting Scientist Abhijit Chakraborty Complex Networks, Economic Networks, Statistical Physics Visiting Scientist / Visiting Scientist Kazuya Mameda Visiting Scientist Natsuki Tomida Visiting Scientist Shin Hayashi Mathematics, Topology Visiting Scientist Motoki Nakata Plasma Physics, Turbulence, Complex Systems, Applied Mathematics Visiting Scientist Tomonori Ugajin Visiting Scientist Koichi Murase Visiting Scientist Parikshit Junnarkar Visiting Scientist Kazuki Yoshida Theoretical Nuclear Physics, Nuclear Reaction theory Visiting Scientist Isao Ishikawa Visiting Scientists (Industry), Division of Fundamental Mathematical Science Visiting Scientist Hiroyasu Miyazaki Arithmetic and Algebraic Geometry Visiting Scientist Toshihiro Ota Mathematical Physics, Machine Learning Visiting Scientist Hirotaka Irie Quantum Computation, Mathematical Physics Visiting Scientist Shinya Gongyo Physics Visiting Scientist Shoichiro Tsutsui Visiting Scientist Yuta Kikuchi Elementary Particle Physics Visiting Scientist Shotaro Funai AI (Machine Learning), Brain Science, Theoretical Physics Visiting Scientist Clare West Student Trainee Intern, Division of Fundamental Mathematical Science Junior Research Associate / Student Trainee (concurrent) Soichiro Uemura Topology, Mathematical Physics Junior Research Associate / Student Trainee (concurrent) Jinyang Li Particle Physics, Machine Learning International Program Associate Iao-Fai Io Conformal Field Theory, Condensed Matter Theory International Program Associate Duc Truyen Le Quantum Computing, High Energy Physics, Theoretical Physics Student Trainee Rumi Hasegawa Staff, Office of the Center Director Office Director (concurrent) Tomoya Nagai R&D Administration, Science Communication Research Administrator Iriko Kaneko Research Administrative Support Staff (concurrent) Shuntaro Aoki Cosmology, Particle Physics Assistant Hitomi Wada Assistant Chikako Ota Assistant Tomoko Iwanami Assistant Nobuko Tanabe Assistant Keiko Ueda Assistant Junko Kamiya Assistant (concurrent) Yuko Kawatsu Administrative Part-time Worker Ⅱ Rieko Zasu Administrative Part-time Worker Ⅱ Tokiko Okada Administrative Part-time Worker Ⅱ Kazuko Harada Visitors
