Faculty and Researchers

Topology, 3D Manifolds, Knot Theory

A 3-manifold is a space in which a 3D coordinate system can be drawn around arbitrary points. Although it’s difficult to visualize an entire 3-manifold, work here involves cutting and pasting spaces and curves in order to study geometric properties such as symmetry.

Cosmology, Astrophysics, Galactic Astronomy

In Inoue Laboratory, we study various phenomena on cosmological scales using theoretical and observational methods, in order to elucidate unknown physical laws and mechanisms in the Universe. In particular, we focus on the bending of light paths due to general relativistic effects (gravitational lensing) and changes in light energy (gravitational redshift), and verify the consistency of cosmological models through synergy between theory and observations. In recent years, we have been focusing on observational studies with the ALMA and Subaru telescopes, including verification of dark matter models, galaxy evolution in extremely large-scale low-density regions, deep learning for detecting astronomical objects, and the effect of active galactic nuclei (AGN) on galaxy formation.

Experimental Particle Physics

We know that matter is composed of things like quarks and other subatomic particles. But what are subatomic particles composed of? Using a large particle accelerator, research here tries to answer questions like this.

Topology

I am studying 4D manifolds and the higher dimensional manifolds by using singularity theory of differentiable maps. There appears singular points in general which degenerate for the differential of smooth maps, so we try to observe the method of eliminating singularities with higer coranks.

Theory of condensed matter physics, Theory of atomic, molecular, and optical physics, Theory of quantum control

In condensed matter systems, such as electrons in solids and liquid helium, competitions and/or collaborations of quantum nature and interparticle interactions lead to various interesting phenomena, including superfluidity, superconductivity, quantum phase transitions, and many-body localization. We develop theoretical methods describing quantum many-body systems, aiming to discover novel quantum many-body effects.

Laser Engineering

We are actively conducting research related to laser and electrical energy control, for example, development of new lasers, new functional materials by laser treatment, laser peening, and development of fast high-voltage switch using power semiconductors.

Biophysics, Bioimaging

Biomolecules are nanometer-sized molecular machines working in living cells. Our research goal is to elucidate the operating principle how biological molecular machines work efficiently in collaboration with water molecules.

Biophysics, Chemical Physics, Structural Chemistry

Protein comes in various complex structures in the body in order to perform its functions. On the other hand, it easily changes form and loses its functions. These structural changes are observed using the world’s brightest X-rays in order to understand the mechanisms behind the formation of protein structures.

Graph Theory

Most discrete structures can be expressed in graph form. Graph theory represents a major research field of discrete mathematics. Here, research is conducted into extremal graph theory, which is the relationship between invariants and local substructures of the graph.

Optical Fibers, Fiber Lasers, Laser Engineering

This lab does research on the fundamentals and potential applications of light, revolving not only around optical communications, but also the development of new lasers that use optical fibers. We also promote development of new optical technologies and enjoy discovering previously unknown phenomena involving light.

Physical Chemistry and Chemistry of Nanostructures

Laser ablated polyenes and fullerenes are studied by molecular spectroscopy and quantum chemistry. With experimental and theoretical knowledges on stability and structures of carbon molecules, microscopic views of high-temperature molecular processes are discussed.

Nano devices, Superconducting devices, nano-fabrication process

Plasma Engineering

Plasma is variously employed in, for example, plasma TVs and welding, and it has become an absolutely essential industrial technology. We are making practical application of this plasma and conducting research to find uses for it in a variety of other fields.

Organic Electronics, Organic Solar Cells, Perovskite solar cell

Our goal is to produce an advanced electronic device using organic semiconductors. We focus on the development of organic solar cells and perovskite solar cells.

High-energy Astrophysics

X-ray observations have revealed that the universe is hot and energetic. My research focuses on high-energy phenomena occurring in our galaxy. To further promote observational study, I have developed the CCD detector onboard the XRISM satellite. As the Principal Investigator of the SUIM project, I am also developing the X-ray camera dedicated to atmospheric observations, which will be installed on the exposed area of the International Space Station.

Radiation Measurement

Condensed Matter Physics (experiments)

In the field of condensed matter physics, it’s possible to conduct research by creating one’s own specimens and measuring these. It is interesting in a completely different way than mega science. The goal here is to discover new physical phenomena and new matter, as well as solve long-debated mysteries of science.

Theoretical Physics, Quantum Field Theory, Elementary Particle Physics

The most elementary objects in nature, called "elementary particles", are described by the theory named as "quantum field theory". In quantum field theory, the existence of particles is itself uncertain and the particles can emerge from the vacuum and can disappear too. In our Lab., we investigate the ways of analyzing quantum field theory and apply them to realistic phenomena in order to obtain deeper understanding of the nature.