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Theoretical Particle, Subatomic, Nuclear, and AstroPhysics

Theory of Elementary Particles

  • Hiroshi Suzuki, Professor
  • Koji Tsumura, Associate Professor
  • Yuya Kusuki, Associate Professor
  • Justin Kaidi, Associate Professor
  • Hajime Otsuka, Assistant Professor
  • ∗ Institute for Advanced Study
Theoretical study of elementary particle physics (quantum field theory, quantum anomaly, lattice gauge theory, exact renormalization group, beyond the standard model, model building, phenomenology and cosmology, superstring theory, unified theory, Calabi-Yau compactification, machine learning, quantum gravity, AdS/CFT, entanglement, conformal bootstrap, any topic in 2D CFT, categorical symmetry, anomalies, non-supersymmetric strings and branes)
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Theory of Subatomic Physics and Astrophysics

  • Koji Harada, Professor
  • Yutaka Ookouchi, Professor
  • Kentaro Kojima, Associate Professor
  • Ken'ichiro Nakazato, Associate Professor
  • † Faculty of Arts and Science
Theoretical study on subatomic physics and astrophysics (quantum field theory for hadrons, elementary particle phenomenology, early universe, string theory, mathematical physics, theoretical astronomy and astrophysics, high-energy astrophysics).
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Theoretical Nuclear Physics

  • Kazuyuki Ogata, Professor
  • Futoshi Minato, Associate Professor
  • Shoya Ogawa, Assistant Professor
Our group is making advanced research work on nuclear physics from theoretical point of view. Here the nucleus is a finite quantum-mechanical many-body system, which is composed of two kinds of elementary particles, protons and neutrons. We are also working on hadron physics, where the quarks and gluons are basic ingredients and they are govern by the fundamental theory of strong interaction, quantum chromodynamics (QCD).
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Theoretical Quantum Physics, Gravitation and Cosmology

  • Kazuhiro Yamamoto, Professor
  • Sugumi Kanno, Associate Professor
  • Akira Matsumura, Assistant Professor
  • Kensuke Gallock Yoshimura, Assistant Professor
Theoretical studies of cosmology, gravitation, and quantum information physics (cosmology and gravitation using quantum information science, quantum entanglement and quantum nature of gravity, quantum field theory of curved spacetime , cosmology, inflationary universe, gravitational waves, Tests of gravity and dark energy models with the large-scale structure of the universe)
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Experimental Particle and Nuclear Physics

Experimental Particle Physics

  • Junji Tojo, Professor
  • Tamaki Yoshioka, Associate Professor
  • Hidetoshi Otono, Associate Professor
  • Shohei Shirabe, Assistant Professor
  • Manabu Moritsu, Assistant Professor
  • ‡ RCAPP
Our group is conducting experimental research projects using state-of-the-art accelerators for understanding of the fundamental law of the universe. Our current projects are as follows:
  1. The ATLAS experiment at the LHC
  2. The International Linear Collider project
  3. Particle physics experiments using highly intense muon beams at J-PARC
  4. Fundamental physics experiments using low energy neutrons at J-PARC
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Experimental Lepton and Hadron Physics

  • Tomoko Ariga, Associate Professor
  • † Faculty of Arts and Science
Experimental studies of leptons and hadrons using accelerators (high-energy neutrino experiment, hadron experiment, muon experiment). Read more

Experimental Nuclear Physics

  • Tomotsugu Wakasa, Professor
  • Satoshi Sakaguchi, Professor
  • Takashi Teranishi, Associate Professor
  • Yuichi Ichikawa, Associate Professor
  • Aiko Takamine, Associate Professor
  • Hiroki Nishibata, Assistant Professor
  • Toshitaka Niwase, Assistant Professor
  • Kosuke Morita, University Professor
  • ∗ Institute for Advanced Study
Our group studies nucleon and hadron many body systems experimentally. Accelerators in Kyushu University and in RIKEN and RCNP are used. Current research topics are as follows:
  1. Search for new superheavy element. Spectroscopic and chemical studies of the nuclei of the heaviest elements.
  2. Spin-isospin responses and nuclear medium effects in stable and unstable nuclei.
  3. Spectroscopy of neutron-rich or proton-rich unstable nuclei.
  4. Low-energy nuclear physics. Technical developments using Kyushu Tandem accelerator.
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Condensed Matter Theory and Statistical and Mathematical Physics

Condensed Matter Theory

  • Jun-ichi Fukuda, Professor
  • Jun Matsui, Lecturer
  • Mitsusuke Tarama, Assistant Professor
Research topics in our group cover various phenomena in non-equilibrium systems and complex systems. Our focus is on theoretical and computational physics of soft condensed matter, and current research subjects include:
  1. Self-organized structures and dynamics of liquid crystals
  2. Optical properties of ordered structures in soft matter
  3. Field theory of polymeric systems
  4. Poly-amorphism and crystallization
  5. Slowing dynamics near the glass transition
  6. Dynamics of active matter
  7. Non-equilibrium physics of biological and living matter
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Statistical Physics

  • Kiyohide Nomura, Associate Professor
Theoretical study of statistical physics and condensed matter, and related topics. Subjects include, but are not limited to,
  1. field theoretical approach of low dimensional quantum systems of spins and electrons.
  2. critical phenomena and nonlinear susceptibility.
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Theoretical Many-Body Physics

  • Kentaro Nomura, Professor
  • Koji Kudo, Assistant Professor
Theoretical research on geometric quantum phenomena in condensed-matter systems with the use of analytical and numerical methods. The central issue is the search for new phenomena such as anomalous quantum transport, magnetism, spintronics, and non-abelian anyons, in topological materials, Dirac / Weyl electrons, and fractional quantum Hall systems.Read more

Mathematical Physics

  • Osamu Narikiyo, Associate Professor
Our group studies mathematical aspects of quantum systems with infinitely many degrees of freedom. Current research topics are as follows:
  1. Gauge theories without ghosts
  2. Long-range force or infrared divergence in QED
  3. Emergence of classical degrees of freedom
  4. Categorical quantum field theory in curved space-time
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Experimental Condensed Matter Physics

Physics of Magnetism

  • Akihiro Mitsuda, Associate Professor
Experimental study on the exotic electronic and structural properties in condensed matters by magnetic and transport measurements and diffraction and resonance techniques under high pressures; itinerant electron magnetism, valence instabilities of rare-earth elements.Read more

Emergent Quantum Matter

  • Yuichi Kasahara, Professor
Experimental studies of diverse quantum condensed matter (e.g. unconventional superconductivity, quantum critical phenomena, quantum spin liquid, and so on). Using various measurement techniques and crystal/thin-film growth, we will explore novel quantum phenomena and elementary excitations, and study their artificial control.Read more

Solid State Spectroscopy

  • Sachiko Nakamura, Associate Professor
Terahertz time-domain spectroscopy of materials such as superconductors and development of spectroscopic techniques.Read more

Solid State Physics

  • Takashi Kimura, Professor
  • Troy Dion, Assistant Professor
  • Kazumasa Yamada, Assistant Professor
  • Takeshi Arai, Assistant Professor
We are interested in electron-transport phenomena in nano-scale systems composed of different types of functional materials such as ferro- and antiferro-magnetic materials, superconductor, normal metal and insulator. Especially, we focus significantly on the influence of electron spin in the transports, so called spin-dependent transports. Moreover, understanding and manipulating the dynamical motions of spin is also important research subject. The specific example of the research subject is as follows.
  1. Understanding electrically and thermally driven spin-current transports
  2. Interplay between spin-polarized electron and cooper pair
  3. Nonlinear motion of nano-scale spin dynamics in patterned ferromagnetic film
  4. Development of novel nanoelectric devices such as spin memristor and spin filter
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Physics of Complex Systems

  • Yasuyuki Kimura, Professor
  • Shio Inagaki, Associate Professor
  • Fumiaki Kobayashi, Assistant Professor
We are the experimental research group that investigates Non-equilibrium Physics of “soft materials” (e.g. colloids, polymers and liquid crystals). Much of the diversity in nature depends on the complex hierarchical ordering of these soft materials and their slow cooperative dynamics, that are the focus of our study. Dynamic self-assembly of soft materials, for instance, creates exquisite structures in living organisms that are under constant activation by their own metabolism. We investigate such nonequilibrium processes that obviously do not obey the statistics of thermodynamic equilibrium, by developing novel state-of-the-art experimental and theoretical techniques.Read more

Biological Soft Matter

  • Daisuke Mizuno, Professor
  • Hiroyuki Ebata, Assistant Professor
Why living organisms consist of soft materials? Complexity and versatility of biological systems arise when soft materials are driven far from equilibrium. We investigate the mechanism from physics perspectives, by measuring "softness" and "non-equilibrium properties" of soft matter.
  1. Exploring non-equilibrium relations in soft biological systems
  2. Microrheology of biological cells and tissues
  3. Violation of Fluctuation-Dissipation and Central Limiting theorems
  4. and their implication in living systems
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