Directors

Program Director

Tetsuo Hatsuda

Particle and Nuclear Physics

Deputy Program Director

Takashi Tsuboi

Topology, Dynamical Systems

Deputy Program Director

Catherine Beauchemin

Virophysics

Deputy Program Director

Tsukasa Tada

Theoretical Particle Physics

Deputy Program Director (concurrent)

Shigehiro Nagataki

Extreme Universe

Deputy Program Director (concurrent)

Takemasa Miyoshi

Data Assimilation

Scientific Advisors

Senior Advisor

Shigefumi Mori

Mathematics, Algebraic Geometry

Senior Advisor

Yoh Iwasa

Mathematical Biology

Senior Advisor

Masato Wakayama

Mathematics

Scientific Advisor

Makoto Kobayashi

Theoretical Particle Physics

Coordinator

Coordinator / Director, Office of the Program Director (concurrent)

Tomoya Nagai

R&D Administration, Science Communication

Researchers

Senior Research Scientist

Gen Kurosawa

Theoretical Biology

Senior Research Scientist

Takumi Doi

Computational Particle and Nuclear Physics

Senior Research Scientist

Jeffrey Fawcett

Genome Evolution

Senior Research Scientist

Yuki Yokokura

Theoretical Physics (Quantum Gravity, Black Hole, Thermodynamics)

Senior Research Scientist

Ching-Kai Chiu

Condensed Matter Physics

Senior Research Scientist

Ryo Namba

Theoretical Cosmology, Gravitational Theory

Senior Research Scientist

Ryosuke Iritani

Mathematical Biology, Evolutionary Ecology

Senior Research Scientist

Masazumi Honda

Theoretical Physics, High Energy Theory, Quantum Computation, Mathematical Physics

Senior Research Scientist

Shunji Matsuura

Quantum Computing

Research Scientist

Derek Beattie Inman

Theoretical and Computational Cosmology

Research Scientist

Kyosuke Adachi

Biophysics, Condensed Matter Physics

Research Scientist

Misako Tatsuuma

Planetary Formation Theory

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

Akihisa Yamamoto

Biomedical Engineering, Soft-matter Physics, Biophysics

Research Scientist / Research Administrative Support Staff, Office of the Program Director (concurrent)

Shuntaro Aoki

Cosmology, Particle Physics

Special Postdoctoral Researcher

José Said Gutiérrez-Ortega

Evolutionary Biology, Ecology

Special Postdoctoral Researcher

Tomoya Naito

Quantum Many-Body Problems (Computational), Nuclear Physics

Special Postdoctoral Researcher

Taketo Sano

Mathematics, Topology

Special Postdoctoral Researcher

Yuto Moriwaki

Conformal Field Theory, Representation Theory

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

Seishiro Ono

Quantum Condensed Matter Physics

Special Postdoctoral Researcher

Che-Yu Chen

Gravitational Theory, Black Hole Physics

Special Postdoctoral Researcher

Yuto Yamamoto

Algebraic Geometry, Tropical Geometry

Special Postdoctoral Researcher

Okuto Morikawa

Theoretical Physics, Quantum Field Theory, Non-perturbative Formulation and Simulation

Special Postdoctoral Researcher

Kan Kitamura

Operator Algebras, Quantum Symmetries

Special Postdoctoral Researcher

Takashi Satomi

Harmonic Analysis, Functional Analysis

Special Postdoctoral Researcher

Junnosuke Koizumi

Algebraic Geometry, Arithmetic Geometry

Special Postdoctoral Researcher

Osamu Fukushima

Theoretical Physics, Quantum Field Theory, Integrable System

Postdoctoral Researcher

Congcong Le

Condensed Matter Physics, Materials Sciences

Postdoctoral Researcher

Jizhou Li

Chaos and Dynamical Systems, Virophysics

Postdoctoral Researcher

Puttarak Jai-akson

Theoretical Physics, Classical/Quantum Gravity

Postdoctoral Researcher

Dongwook Ghim

String Theory, Quantum Computation

Postdoctoral Researcher

Pratik Nandy

Quantum Chaos, Quantum Entanglement, AdS/CFT

Postdoctoral Researcher

Amaury Micheli

Theoretical Cosmology, Quantum Entanglement

Postdoctoral Researcher

Lucy McNeill

Astrophysics

Postdoctoral Researcher

Rento Yamada

Senior Research Scientist (concurrent)

Ryusuke Hamazaki

Statistical Mechanics

Senior Research Scientist (concurrent)

Akinori Tanaka

Machine Learning, Mathematical Physics

Research Scientist (concurrent)

Shigenori Otsuka

Data Assimilation

Research Scientist (concurrent)

Shun Ohishi

Research Scientist (concurrent)

Akira Mizuta

Special Postdoctoral Researcher (concurrent)

Akira Dohi

Nuclear Astrophysics

Researchers (RIKEN-Berkeley Fellow)

Postdoctoral Researcher

Jan Schuette-Engel

Particle Physics, Astroparticle Physics, Cosmology

Postdoctoral Researcher

Yan Lyu

Hadronic Physics, Lattice Gauge Field Theory

Postdoctoral Researcher

Yuki Fujimoto

Postdoctoral Researcher

Gabriele Di Ubaldo

Theoretical Physics, Conformal Field Theory, Quantum Gravity, Quantum Chaos

Postdoctoral Researcher

Yuuka Kanakubo

High-Energy Physics, Nuclear Theory

RIKEN Quantum

RIKEN Quantum Website

Senior Research Scientist

Steffen Backes

Condensed Matter Physics

Research Scientist

Yantao Wu

Physics, Chemistry

Research Scientist

Rongyang Sun

Quantum Many-body Physics

Research Scientist

Himadri Pathak

Atomic, Molecular, and Optical Physics, Quantum Chemistry

Postdoctoral Researcher

Yuta Sekino

Condensed Matter Physics, Ultracold Atoms

Postdoctoral Researcher

Xiaoyang Wang

Quantum Computation, High Energy Physics, Computer Science

Senior Research Scientist (concurrent)

Yuji Sugita

Theoretical Chemistry

Senior Research Scientist (concurrent)

Tomonori Shirakawa

Condensed Matter Physics

Coordinator (concurrent)

Shinichiro Fujii

Nuclear Theory, Project Management

Mathematical Genomics RIKEN ECL Research Unit

Our lab develops mathematical and statistical techniques to reveal the evolutionary history in our DNA. We study migration, Neanderthal interaction, and adaptation to environmental changes by reconstructing "genetic family trees" from modern and ancient genomes, tracing evolution over millions of years.

Mathematical Genomics RIKEN ECL Research Unit | RIKEN

RIKEN ECL Research Unit Leader

Leo Speidel

Research Consultants

Research Consultant

Koichi Yazaki

Nuclear and Hadron Physics

Research Consultant

Kenji Fukaya

Geometry

Research Consultant

Takeo Inami

Research Consultant

Kazuo Fujikawa

Particle theory, Quantum science

Senior Visiting Scientists

Senior Visiting Scientist

Hiroshi Suito

Applied Mathematics, Computational Fluid Dynamics

Senior Visiting Scientist

Wick C. Haxton

Nuclear Astrophysics

Senior Visiting Scientist

Gordon Baym

Quantum Many-body Theory

Senior Visiting Scientist

Hideaki Aoyama

Elementary Particle Theory, Mathematical Linguistics, Econophysics

Senior Visiting Scientist

Yasuyuki Kawahigashi

Operator Algebras

Senior Visiting Scientist

Takashi Sakajo

Applied Mathematics (Mathematical Fluid Dynamics)

Senior Visiting Scientist

Hidetoshi Nishimori

Statistical Mechanics, Quantum Computation

Senior Visiting Scientist

Yoshiyuki Inoue

High Energy Astrophysics

Senior Visiting Scientist

Motoko Kotani

Geometry

Senior Visiting Scientist

Atsushi Mochizuki

Theoretical Biology

Senior Visiting Scientist (concurrent)

Kazuyuki Aihara

Mathematical Engineering

Visiting Scientists (SUURI-COOL)

Visiting Scientist

Masato Itami

Statistical Physics

Visiting Scientist

Sonia Mahmoudi

Mathematics, Topology

Visiting Scientists (iTHEMS Alumni)

Visiting Scientist

Yuka Kotorii

Mathematics, Topology

Visiting Scientist

Genki Ouchi

Mathematics, Algebraic Geometry

Visiting Scientist

Shun Furusawa

Astrophysics, Nuclear Physics

Visiting Scientist

Masato Taki

Mathematical Physics, Machine Learning

Visiting Scientist

Masashi Tachikawa

Cell Biology, Biophysics

Visiting Scientist

Takashi Okada

Mathematical Biology

Visiting Scientist

Masahiro Nozaki

Elementary Particle Physics, Quantum Information

Visiting Scientist

Kanato Goto

High Energy Theory, String Theory, Quantum Gravity

Visiting Scientist

Naomi Tsuji

Astrophysics

Visiting Scientist

Michiya Mori

Mathematics, Physics

Visiting Scientist

Don Warren

Cosmic Rays, Gamma-ray Bursts, Virology

Visiting Scientist

Yongjia Huang

High Energy Astrophysics, Gravitational Wave Astrophysics

Visiting Scientist

Shou Yoshikawa

Algebraic Geometry

Visiting Scientist

Yosuke Kubota

Mathematics, Index Theorem

Visiting Scientist

Euki Yazaki

Genome Evolution, Molecular phylogeny, Protistology

Visiting Scientist

Masaki Taniguchi

Mathematics, Topology

Visiting Scientist

Naritaka Oshita

Quantum/Classical Gravity, Cosmology, Quantum Field Theory

Visiting Scientist

Etsuko Itou

Particle and Nuclear Physics, Lattice QCD, Quantum Computing

Visiting Scientist

Akira Matsumoto

Theoretical Particle Physics, Lattice Gauge Theory, Quantum Computing

Visiting Scientist

Ermal Rrapaj

Nuclear Astrophysics, Quantum Computing

Visiting Scientist

Gilles Ferrand

Astrophysics

Visiting Scientist

Kotaro Murakami

Physics

Visiting Scientist

Ade Irma Suriajaya

Analytic Number Theory

Visiting Scientist

Yingying Xu

Mathematical Sciences

Visiting Scientist

Hui Tong

Nuclear Theory

Visiting Scientist

Tomoki Ozawa

Condensed Matter Physics, AMO Physics, Topological Insulator

Visiting Scientist

Hokuto Konno

Mathematics, Geometry and Topology

Visiting Scientist

Takuya Sugiura

Theoretical Nuclear and Hadronic Physics

Visiting Scientist

Nagisa Hiroshima

Dark Matter, High Energy Astrophysics

Visiting Scientist

Yuya Kusuki

Physics

Visiting Scientist

Yalong Cao

Algebraic Geometry, Mathematical Physics

Visiting Scientist

Akira Harada

Physics, Space Science

Visiting Scientist

Hidetoshi Taya

Physics

Visiting Scientist

Yukimi Goto

Mathematics

Visiting Scientist

Mizuki Oikawa

Mathematics, Physics

Visiting Scientist

Maria Manuela Saez

Neutrino Physics, Astroparticles

Visiting Scientist

Yoshimasa Hidaka

Theoretical Physics

Visiting Scientist

Hiroshi Yokota

Polymer Physics

Visiting Scientist

Yasunori Nomura

Quantum Gravity, Cosmology, Particle Physics

Visiting Scientist

Keita Mikami

Mathematics, Analysis, Partial Differential Equations

Visiting Scientist

Eiji Inoue

Mathematics

Visiting Scientist

Kazuki Kannaka

Mathematics

Visiting Scientist

Masaru Hongo

Particle and Nuclear Physics, Nonequilibrium physics

Visiting Scientist

Hajime Sotani

Nuclear Astrophysics

Visiting Scientists (Academia)

Visiting Scientist

Kentaro Takami

Theoretical Astrophysics

Visiting Scientist

Tetsuo Hyodo

Physics

Visiting Scientist

Shingo Iwami

Mathematical Sciences, Life Sciences

Visiting Scientist

Haozhao Liang

Visiting Scientist

Wataru Souma

Visiting Scientist

Noriyoshi Ishii

Visiting Scientist

Faisal Etminan

Visiting Scientist

Motoi Tachibana

Visiting Scientist

Sinya Aoki

Visiting Scientist

Atsushi Nakamura

Visiting Scientist

Takashi Inoue

Visiting Scientist

Yoji Ohashi

Visiting Scientist

Hiroshi Suzuki

Visiting Scientist

Kenji Sasaki

Visiting Scientist

Yoichi Ikeda

Hadron and Nuclear Physics

Visiting Scientist

Kazuya Mameda

Visiting Scientist

Yuji Sakai

Theoretical Biology

Visiting Scientist

Shunsuke Kobayashi

Applied mathematics

Visiting Scientist

Koya Sakakibara

Numerical Analysis, Mathematical Fluid Dynamics

Visiting Scientist

Hiroshi Kokubu

Dynamical Systems and Applications

Visiting Scientist

Hiroki Kodama

Topology, Dynamical Systems

Visiting Scientist

Christopher Bourne

Mathematics, Operator Algebras, Topological Phases

Visiting Scientist

Takahiro Doi

Visiting Scientist

Shin Hayashi

Mathematics, Topology

Visiting Scientist

Tomonori Ugajin

Visiting Scientist

Koichi Murase

Visiting Scientist

Tomoya Hayata

Particle and Nuclear Physics

Visiting Scientist

Motoki Nakata

Plasma Physics, Complex Systems, Turbulence, Applied Mathematics

Visiting Scientist

Natsuki Tomida

Visiting Scientist

Koutarou Kyutoku

Gravitational-wave Astronomy

Visiting Scientist

Abhijit Chakraborty

Complex Networks, Economic Networks, Statistical Physics

Visiting Scientist

Parikshit Junnarkar

Visiting Scientist

Kazuki Yoshida

Theoretical Nuclear Physics, Nuclear Reaction theory

Visiting Scientists (Industry)

Visiting Scientist

Shinya Gongyo

Physics

Visiting Scientist

Hiroyasu Miyazaki

Arithmetic and Algebraic Geometry

Visiting Scientist

Shoichiro Tsutsui

Visiting Scientist

Yuta Kikuchi

Elementary Particle Physics

Visiting Scientist

Toshihiro Ota

Mathematical Physics, Machine Learning

Visiting Scientist

Enrico Rinaldi

Particle and Nuclear Physics, Machine Learning

Visiting Scientist

Kohei Hayashi

Probability Theory

Student Trainee Intern

Junior Research Associate / Student Trainee (concurrent)

Daiki Kumakura

Microbial Evolutionary Ecology, Genome Evolution, Mathematical Biology

Junior Research Associate / Student Trainee (concurrent)

Tingyu Zhang

Junior Research Associate / Student Trainee (concurrent)

Taiichi Nakanishi

Junior Research Associate / Student Trainee (concurrent)

Soichiro Uemura

Topology, Mathematical Physics

International Program Associate

Qianteng Zhu

Particle and Nuclear Physics, Machine Learning, AI for Science

Research Part-time Worker Ⅱ / Student Trainee (concurrent)

Rumi Hasegawa

Student Trainee

Liang Zhang

Student Trainee

Keiichi Morita

Mathematical Biology, Evolutionary Community Ecology

Student Trainee

Daeho Park

Hadron Physics, Algorithm, AI

Staff