List of GSGC faculties by Subcourse (For 2022.10 enrollment)

Nuclear Theory (A0) Kenji FUKUSHIMA Department of Physics We investigate various phenomena originating from the "strong interaction" that is associated with one of the most fundamental forces in nature. Quarks and gluons interact strongly to form hadrons such as pions, nucleons, and so on, and hadrons are constituents of any materials we know. From the same theory of the strong interaction, unexpectedly amusing physics can appear in special environments like high temperature, high density, or strong background (electromagnetic or gravitational) fields. We are pursuing novel phenomena based on this established and yet profound theory of the strong interaction.
Nuclear Theory (A0) Haozhao LIANG Department of Physics Our research mainly focuses on the nuclear many-body theories and the relevant interdisciplinary studies in nuclear physics, nuclear astrophysics, and particle physics. Key topics include: nuclear density functional theory (DFT), structure of exotic nuclei, hidden symmetries in atomic nuclei, nuclear collective excitations, nuclear weak-interaction processes and r-process nucleosynthesis, etc.
Theoretical Particle Physics (A1) Koichi HAMAGUCHI Department of Physics hama - AT - I am interested in physics beyond the energy scale of the Standard Model of particle physics, and doing research aiming at a more fundamental unified theory underlying in nature. Currently I am working on phenomenology and particle cosmology which are mainly based on supersymmetric models. I also plan to pay attention to the latest results from high energy experiments and astrophysical observations, and then feed them back to theoretical research.
Theoretical Particle Physics (A1) Simeon HELLERMAN IPMU I study the dynamics of gravity in situations where the short-distance structure of space-time becomes important, for example, in the early Universe. As a tool, I use string theory, which is the unique dynamical system incorporating both the existence of gravity and the uncertainty principle of quantum mechanics. My recent work has mapped out the various different phases of string theory and the transitions the theory can make from one phase to another, in a cosmological environment. These phase transitions alter several features of the theory dramatically. For instance, the number of dimensions of the space-time can change, or the transition may restore a highly stable type of order known as supersymmetry, or else the character of the string dynamics may change altogether.
Theoretical Particle Physics (A1) Kentaro HORI IPMU My research is centered on discovery, understanding and application of duality in quantum field theory such as electric-magnetic duality and mirror symmetry; structure and properties of branes and orientifolds in superstring theory. It is sometimes developed through interaction with mathematics.
Theoretical Particle Physics (A1) Masahiro IBE Institute for Cosmic Ray Research In my research, I have focused on physics beyond the Standard Model which completes the Higgs mechanism at the energy scale around the TeV. The evidences of the new physics are expected to be discovered at the coming generation of collider experiments such as the large hadron collider (LHC) experiments. Especially, I have put emphasis on the interplay between the phenomenological aspects of the new physics and its cosmological/astrophysical implications. By the rapid progress in the cosmological/astrophysical observations as well as the full operation of the LHC experiments, the studies which exploit both particle phenomenology and cosmology/astrophysics will be more important than ever.
Theoretical Particle Physics (A1) Shigeki MATSUMOTO IPMU I am so far studying dark matter (DM) in particle physics; proposing interesting DM candidates, finding new mechanisms on DM processes, suggesting experimental methods to test the candidates, and contributing to DM search projects by showing the range of DM mass and interactions, through various international and interdisciplinary collaborations with high-energy experimentalists, cosmologists, astronomers, and even chemists.
Theoretical Particle Physics (A1) Takeo MOROI Department of Physics moroi at Particle physics, cosmology
Theoretical Particle Physics (A1) Hitoshi MURAYAMA IPMU Supersymmetry Phenomenology, Particle Cosmology, Quantum Field Theory, Physics at e+ e- Linear Collider, Collider Physics, Neutrino Physics
Theoretical Particle Physics (A1) Taizan WATARI IPMU taizan.watari _at_ Institute for the Physics and Mathematics of the Universe (IPMU) welcomes graduate students who major in theoretical particle physics from the A1 subcourse (A5 subcourse for cosmology major). My research interest covers broad area in theoretical particle physics and dynamics of gauge theories. Theory of the very early universe is also a part of it, because quantum field theories and quantum gravity are the appropriate theoretical frame works to talk about the very early stage of the universe. I have been also trying to exploit superstring theory for a better understanding of particle physics, gauge theories and early universe. For more information, please visit my web page
Experimental particle and nuclear physics, accelerator physics (A2) Shoji ASAI Department of Physics
Experimental particle and nuclear physics, accelerator physics (A2) Takeo HIGUCHI IPMU In quest of new physics beyond the Standard Model of particle physics that can account for yet-unraveled mysteries in the Universe like dark matter, we are working on a high-energy accelerator experiment Belle II operated in Tsukuba, Japan. Of several research topics available in Belle II, we are attracted to and concentrating on precise measurement of the sides and interior angles of the Unitarity Triangle formed by the Quark-Mixing matrix and detection of the new physics by comparing the measurement with the Standard Model prediction. We have been and will be working on the vertex detector and data acquisition system for Belle II as well.
Experimental particle and nuclear physics, accelerator physics (A2) Yasuhiro NAKAJIMA Department of Physics My research focuses are studies of nature of neutrinos as elemental particles, as well as astrophysical studies with neutrinos. In particular, we are aiming for the world first observation of Diffuse Supernova Neutrino Backgrounds with the Gadolinium-loaded Super-Kamiokande detector (SK-Gd). Our another major goal is to study matter-antimatter asymmetry with accelerator neutrinos produced at J-PARC. In addition, we are conducting researches towards observations at the Hyper-Kamiokande experiment.
Experimental particle and nuclear physics, accelerator physics (A2) Masashi YOKOYAMA Department of Physics Experimental particle physics. Study of neutrino oscillation using artificial neutrino beams. R&D for Hyper-Kamiokande project. Development of new neutrino detectors.
Theoretical Condensed Matter Physics (A3) Yuto ASHIDA Institute for Physics of Intelligence Theoretical studies at the intersection of quantum many-body physics and quantum optics.
Theoretical Condensed Matter Physics (A3) Yoshiyuki KABASHIMA Institute for Physics of Intelligence Yoshiyuki Kabashima is working in a cross-disciplinary field between statistical physics and information sciences. His research topics include error-correcting codes, cryptography, CDMA multi-user detection, data compression, compressive sensing, random matrix, machine learning, spin glasses.
Theoretical Condensed Matter Physics (A3) Takeo KATO The Institute for Solid State Physics Theory for mesoscopic systems; evaluvation of conductance and noise power, treatment of electron-electron interaction, basic theory for nonequilibrium states, and new argothim of numerical calculation.
Theoretical Condensed Matter Physics (A3) Hosho KATSURA Department of Physics [Condensed matter theory] (1) Strongly correlated systems: quantum magnetism, multiferroics, low-dimensional systems, Hubbard-type models, quantum entanglement. (2) Topological systems: Hall effects, topological insulators, Majorana fermions. [Statistical mechanics] Algebraic structures behind classical and quantum solvable models and their applications. Nonlinear phenomena in physics.
Theoretical Condensed Matter Physics (A3) Naoki KAWASHIMA The Institute for Solid State Physics kawashima AT We are developing new computational methods and algorithms for analytically intractable problems in condensed matter theory. We also use them in large-scale computing on parallel computers. Specifically, we study quantum spin liquids by tensor-network method, Z2 vortex dissociation transition by cluster algorithm, spinon deconfinement critical phenomena by quantum Monte Carlo, optical lattice systems by worm algorithm, and spin glass critical phenomena.
Theoretical Condensed Matter Physics (A3) Mio MURAO Department of Physics We consider that a quantum computer is not just a machine to run computational algorithms but also a machine to perform any operations allowed by quantum mechanics. We analyze what kinds of new properties and effects may appear in quantum systems by using quantum computers to improve our understanding of quantum mechanics from an operational point of view. We also investigate applications of quantum properties and effects such as entanglement for information processing, communication, precise measurement and manipulations.
Theoretical Condensed Matter Physics (A3) Takashi OKA The Institute for Solid State Physics
Theoretical Condensed Matter Physics (A3) Masaki OSHIKAWA The Institute for Solid State Physics oshikawa@(domain), (domain) My study centers around the intersection of condensed matter theory, statistical mechanics, and field theory. Examples of my research include: * Quantized magnetization plateaux in quantum spin systems * Commensurability and topology in quantum many-body systems * Magnetic-field effects on a junction of three quantum wires (application of boundary conformal field theory) * Field-theory approach to Electron Spin Resonance in quantum spin chains I work on abstract theories as well as analysis and prediction of experimental data; often they are well connected.
Theoretical Condensed Matter Physics (A3) Taisuke OZAKI The Institute for Solid State Physics In accordance with development of recent massively parallel computers, first-principles calculations based on density functional theories (DFT) have been playing a very important role in understanding and designing properties of a wide variety of materials. We have been developing efficient and accurate methods and software packages to extend applicability of DFT to more realistic systems as discussed in industry. Although the computational cost of the conventional DFT method scales as the third power of number of atoms, we have developed an O(N) Krylov subspace method, of which computational cost scales only linearly, based on nearsightedness of electron. In addition to this, we are aiming at realization of materials design from first-principles.
Theoretical Condensed Matter Physics (A3) Synge TODO Department of Physics Computational Physics: By using the cutting-edge simulation techniques, e.g. the quantum Monte Carlo method, we elucidate novel quantum states, phase transitions, and critical phenomena in strongly correlated many-body system, such as quantum magnets and Bose-Hubbard systems. In addition, we develop new simulation techniques, such as the tensor network algorithm, for quantum many-body systems, and effective parallelization schemes for state-of-the-art large-scale supercomputer, such as the K computer, as well as open-source software for next-generation parallel simulation.
Theoretical Condensed Matter Physics (A3) Naoto TSUJI Department of Physics We are interested in nonequilibrium physics of quantum many-body systems and statistical mechanics. The aim is to realize a new order or new physical property by driving quantum systems out of equilibrium. At first sight, it sounds unlikely to happen because energy injected by an external drive would turn into heat, which would destroy all the interesting properties of quantum many-body systems that might emerge at low energies. However, contrary to our intuition, recent studies found various possibilities such that novel states of matter that can never be realized in equilibrium do emerge out of equilibrium. We are trying to understand their mechanism and explore the frontier of nonequilibrium physics.
Theoretical Condensed Matter Physics (A3) Masahito UEDA Department of Physics ueda [AT] cold atoms (Bose-Einstein condensation, Fermi superfluidity), information thermodynamics, quantum information and measurement,condensed-matter theory
Condensed matter experiment (A4) Masamitsu HAYASHI Department of Physics hayashi [AT] Experimental physics of quantum Spintronics. Spin transport, magnetism and optical response of metallic and oxide/nitride heterostructures. In particular focus is on the physics of spin current and related effects.
Condensed matter experiment (A4) Kentaro KITAGAWA Department of Physics
Condensed matter experiment (A4) Kensuke KOBAYASHI Institute for Physics of Intelligence Recent progress in nanotechnology enables us to directly address quantum behavior of electrons in nano-devices made of metal or semiconductor. The advantage of this research field, which is called "mesoscopic physics" or "nanophysics", lies in the various controllability and the versatile degrees of freedom in the device design. We explore this field to understand, predict, and control various novel quantum, many-body, and nonequilibrium effects in nano-devices in terms of the dynamical aspects of electron behavior.
Condensed matter experiment (A4) Takeshi KONDO The Institute for Solid State Physics The angle-resolved photoemission spectroscopy (ARPES) is a powerful technique to visualize the band structure. With the spin-resolved technique, we can identify the spin-polarized character of the band. In addition, the time-resolved ARPES realized with a pump-probe technique can track the reordering process of electron system from its nonequilibrium state. In our laboratory, we utilize these various ARPES techniques and explore novel electronic states of matter. Furthermore, we develop a new ARPES machine capable of achieving both the lowest measurement temperature and the highest energy resolution in the world by innovating a 3He cryostat and a laser source.
Condensed matter experiment (A4) Iwao MATSUDA The Institute for Solid State Physics We develop new spectroscopy techniques using synchrotron radiation and X-ray free electron laser. With the new probes, we investigate spin-polarized electronic states and dynamics in monatomic layers that have intriguing Dirac Fermions. We aim to make the comprehensive educations to students and we also promote concerting researches with various quantum beams, such as positrons and electrons.
Condensed matter experiment (A4) Satoru NAKATSUJI Department of Physics
Condensed matter experiment (A4) Tohru OKAMOTO Department of Physics okamoto [AT] Low temperature electronic properties of low-dimensional systems in semiconductors.
Condensed matter experiment (A4) Akito SAKAI Department of Physics Strong correlation between electrons can induce non-trivial electronic states. One of the famous examples is Tomonaga-Luttinger liquid in the interacting one-dimensional electron system. Similarly, such a “strange metal”, where the quasiparticle picture does not hold, can also appear in the three-dimensional system. We find out the ideal system which can be described by a simple Hamiltonian at low temperature, and perform various experiments such as specific heat, magnetization, electric and thermal transport, and magnetostriction. Our goal is to reveal novel quantum states induced by the entanglement.
Condensed matter experiment (A4) Ryo SHIMANO Cryogenic Research Center shimano at Our main research interests are focused on the creation and manipulation of many body quantum systems with optical/terahertz pulses. The research subjects include: realization of low temperature quantum degenerate phases such as excitonic insulator (e-h BCS) in photoexcited semiconductors, optical control of superconductivity, study of collective excitations in correlated electron systems, and novel optical phenomena related to the topological phase in condensed matter.
Condensed matter experiment (A4) Masashi TOKUNAGA The Institute for Solid State Physics (Please change "_@_" to "@") We study various kinds of magnetic materials, semimetals/semiconductors, and superconductors in pulsed high magnetic field with using various homemade state of the art experimental techniques. Recently, we found novel non-volatile resistive memory effects at room temperature in a multiferroic material and clarified fundamental physics of several topological semimetals in high magnetic fields.
Theoretical General Physics (A5) Hideyuki TAGOSHI Institute for Cosmic Ray Research Gravitational Wave Physics and Astronomy
Theoretical General Physics (A5) Katsuaki ASANO Institute for Cosmic Ray Research I theoretically study high-energy astrophysical phenomena, such as relativistic jets from active galactic nuclei, gamma-ray bursts, pulsars, and merger of binary neutron stars. In this field, there remain many unsolved problems. I especially study the formation of relativistic outflows, particle acceleration in jets, emission mechanisms of electromagnetic waves or neutrinos from high-energy particles. Our research supports the multi-messenger astronomy, which probes astronomical phenomena through collaborating observations of electromagnetic waves, cosmic rays, neutrinos, and gravitational waves.
Theoretical General Physics (A5) Masahiro TAKADA IPMU Kavli IPMU is one of the leading institutions of the unprecedented massive galaxy survey carried with the 8.2m Subaru Telescope ( My main research interest is exploring ?gexperimental?h high-precision cosmology with the Subaru data: 1) Exploring the nature of dark matter and dark energy with high-precision measurement of weak gravitational lensing due to cosmic structures 2) Constraining the mass scale of neutrinos from measurements of galaxy clustering statistics 3) To test theory of gravity at cosmological distance scales as well as test theory of cosmic structure formation
Theoretical General Physics (A5) Jun'ichi YOKOYAMA Research Center for the Early Universe yokoyama(at) Cosmology of the Early Universe and Gravitational Wave Physics Specific topics of recent research include:inflationary cosmology generation and evolution of density fluctuations baryogenesis origin of dark matter and dark energy nonequilibrium processes in the early universe primordial black holes cosmic microwave background radiation fundamental research on gravitational wave data analysis gravitational wave cosmology
Theoretical General Physics (A5) Naoki YOSHIDA Department of Physics Theoretical astrophysics and observational cosmology.Recent research highlight includes structure formation in the early universe, the nature of dark matter and dark energy.Our research group members work on a broad range of topics from the formation of the first stars and blackholes to the distribution of dark matter in and around galaxies.We use data from galaxy redshift surveys and weak lensing observations to study the large-scale strucutre of the universe.Massive parallel computing such as gravitational N-body simulations and radiation-hydrodynamics is also of our primary interest.
Experimental General Physics (A6) Hidefumi AKIYAMA The Institute for Solid State Physics (Please change "_@_" to "@") Advanced laser micro-spectroscopy is developed and applied to various semiconductor nano-structures, in order to understand and control their optical properties quantum mechanically which vary with their size and shape. Subjects are, for example, physics of short-pulse generation from semiconductor lasers, solar cells, firefly bio-luminescence, micro-spectroscopy and imaging with solid immersion lens, and time-resolved spectroscopy for characterization and development of novel samples. We have particular interests in finding and solving fundamental physics problems which limit semiconductor and optical technologies.
Experimental General Physics (A6) Akira EJIRI Department of Complexity Science and Engineering Plasma is characterized by huge degree of freedom and strong interaction between particles or fluid elements. Plasma shows nonlinear response, an in a state far from equilibrium. In order to investigate the physics arising from these features, we put emphasis on fluctuations. Our main plasma device is the TST-2 spherical tokamak (Univ. Tokyo), and we operate it in cooperation with Prof. Takase's group. Typical plasma parameters are: major radius 0.38m, minor radius 0.25m, toroidal magnetic field 0.2 T, plasma current 100 kA. We also participate in experiments at LHD (NIFS) and JFT-2M (JAERI) devices.
Experimental General Physics (A6) Takuro IDEGUCHI Institute for Photon Science and Technology We study optical science with advanced lasers. Currently, we are focusing on developing ultrafast spectroscopy and microscopy based on ultrashort pulse lasers including optical frequency combs. These techniques are to be powerful tools not only for physics but also for chemistry, biology, medicine, pharmacy and material science. Moreover, we aim at creating interdisciplinary or multidisciplinary science by combining optics with nanotechnology or microfluidics.
Experimental General Physics (A6) Jiro ITATANI The Institute for Solid State Physics Our main research subjects are the development of advanced intense ultrashort-pulse lasers and their applications to attosecond sciences. We especially work on (i) the development of waveform-controlled intense light sources, (ii) generation of attosecond soft-X-ray pulses, (iii) coherent control of ultrafast processes in a strong laser field, and (iv) ultrafast soft-x-ray spectroscopy on femtosecond to attosecond time scales.
Experimental General Physics (A6) Ryusuke MATSUNAGA The Institute for Solid State Physics Light-matter interaction provides deep understandings of the fundamental properties of materials and how to control it artificially by light. Terahertz and mid-infrared light sources allows us to reveal elementary excitations in solids, cooperative phenomena in many-body systems, and functionality of novel materials. With developing state-of-the-art pulsed laser system, we explore THz-MIR extreme nonlinear optics and nonequilibrium dynamics in solids induced by intense light field.
Experimental General Physics (A6) Kazumasa TAKEUCHI Department of Physics Nonequilibrium Physics, Soft Matter, Biophysics
Biophysics (A7) Chikara FURUSAWA Department of Physics furusawa at The aim of our study is to understand robustness and plasticity of complex biological dynamics involving a large number of components, including adaptation, evolution, development and immune system. By using computer simulations of simple models, theoretical analysis, and high-throughput experimental measurements, we will try to extract universal characteristics of biological dynamics and to establish macroscopic theories for biological robustness and plasticity.
Biophysics (A7) Hiroshi NOGUCHI The Institute for Solid State Physics noguchi at Study of soft-matter and biophysics using theory and simulation. Particularly, dynamics of biomembrane from nano to micro meter. i) Deformation of red blood cells in microvessels. ii) Fusion and fission of biomembrane. We also develop hydrodynamic methods and coarse-grained molecular models.
Biophysics (A7) Yasushi OKADA Department of Physics okada at We want to answer “What is Life?” through a viewpoint of physics. For that purpose, we have been developing imaging technologies including super-resolution microscopy, in order to make quantitative measurements in living cells, such as the transport within a cell, especially a neural cell. Recently, we have demonstrated that the phase transition of the conformation of a protein polymer, a microtubule, regulates the directionality of the transport. We are also applying non equilibrium statistical physics to the cellular phenomena. For example, we are developing a non-invasive method to measure force exerted to the vesicles during the intracellular transport by applying the fluctuation theorem.
Astrophysics and Astronomy (A8) Masaki ANDO Department of Physics Our main target is to open a new field of gravitational-wave astronomy.For it, we are participating as a main institute to a KAGRA project and constructing a large-scale cryogenic laser interferometer for gravitational-wave observation at Kamioka, Gifu. We are also developing key components for DECIGO, a space gravitational-wave telescope. Inaddition, we are working for experimental tests of relativity, and quantum measurements using laser interferometers.
Astrophysics and Astronomy (A8) Aya BAMBA Department of Physics The universe appears to be a vast, cold, quiet expanse of space, but is it true? The answer is NO: Recent studies in X-rays and gamma-rays show us that there are full of hot and energetic phenomena, such as explosion of stars, matter getting sucked into black holes, vast gas around clusters of galaxies. We investigate such energetic celestial objects with X-rays and gamma-ray telescopes in the space and ground, and study the mechanical and chemical evolution of the universe. We utilize the X-ray space satellite Hitomi, ground-based very high energy gamma-ray observatory CTA, as well as the recent X-ray and gamma-ray missions such as Suzaku, Chandra, XMM-Newton, and Chandra. We also develop next generation high-energy astrophysics mission, such as Athena.
Astrophysics and Astronomy (A8) Yoshinari HAYATO Institute for Cosmic Ray Research 1) Neutrino oscillation experiments Mainly working on the accelerator based long baseline neutrino oscillation experiments.2) Neutrino-nucleus scattering experiments including the development of a simulation program of neutrino-nucleus scattering.3) R&D of the data acquisition system for the experiments.
Astrophysics and Astronomy (A8) Akito KUSAKA Department of Physics Why and how did our universe begin? How has it evolved? These are the key questions of our research. We explore these fundamental questions primarily through observing cosmic microwave background (CMB), the light from the very beginning of the universe. Through CMB, we study not only the fundamental nature of the universe, but also particle physics as well, such as the nature of neutrinos and unknown particles. Our approach is that of experimental physics, and our research entails development of cutting edge technologies such as those using superconducting instrumentation, and low-temperature and microwave engineering.
Astrophysics and Astronomy (A8) Kai MARTENS IPMU 1. Dark Matter direct detection with the XENON experiment (LNGS, Italy) 2. Astrophysical neutrinos with Super-Kamiokande at the Kamioka Observatory, Gifu-ken
Astrophysics and Astronomy (A8) Tomotake MATSUMURA IPMU tomotake.matsumura[at] We study the physics of early universe using the measurement of cosmic microwave background (CMB) polarization. The theory of cosmic inflation can be tested by measuring the B-mode pattern in the CMB polarization experimentally. We are active member of LiteBIRD, the post ESA Planck satellite, to measure the CMB B-mode polarization. We develop observational hardware (polarization modulator), study systematics effects, develop new calibration strategy and prepare for the data analysis. We also participate POLARBEAR/Simons Array, and PILOT in development and characterization of hardware, operation, calibration and data analysis.
Astrophysics and Astronomy (A8) Shinji MIYOKI Institute for Cosmic Ray Research I am working toward the direct detection of gravitational waves that is predicted by general theory of relativity. We have finished research and developments for over 20 years by using proto-type laser interferometers, and then we are now developing "KAGRA" Large-scale Cryogenic laser interferometer Telescope. I would like to detect gravitational waves and to start gravitational wave astronomy as one of GW detectors as LIGO, VIRGO and GEO600 in the world. In addition to gravitational wave research, I am trying to observe macroscopic quantum mechanics by using ultra-precise length measurement technique.
Astrophysics and Astronomy (A8) Shigetaka MORIYAMA Institute for Cosmic Ray Research My fields of interest include dark matter, axions, neutrino physics, and proton decay. My research comprises of two experimental approaches. The first approach involves the use of a liquid xenon target that is sensitive to an energy scale ranging from sub-keV to MeV. The XENONnT detector with ~10 ton of liquid xenon is used to discover dark matter particle in the Universe with the world best sensitivity. The second approach involves the use of Super-Kamiokande. The hierarchy of neutrino masses and CP violation in the lepton sector may be crucial for understanding the existence of matter in the Universe, and an observation of proton decay clearly indicates a large framework of particle physics. We are working to realize a much larger detector, the Hyper-Kamiokande.
Astrophysics and Astronomy (A8) Kimihiro OKUMURA Institute for Cosmic Ray Research okumura(atmark) My research field is about neutrino which is the lightest elementary particle.We measure neutrino oscillation precisely using atmospheric neutrino and accelerator neutrino, and aim at discovering the unknown properties. In future I would like to attain the measurement of CP violation and mass hierarchy which may give a hint for the origin of the matter in the universe, and therefore will promote the research and?@development of the detector for future neutrino experiment.
Astrophysics and Astronomy (A8) Masami OUCHI Institute for Cosmic Ray Research We study the early universe by observations. Armed with the state-of-the art telescopes such as Subaru and Hubble (+ALMA), we aim to push the today's observational frontier towards the very high redshift universe that no one has ever seen by observations. Our goal is understanding physical processes of galaxy formation at the early stage and the relevant event of cosmic reionization.
Astrophysics and Astronomy (A8) Takashi SAKO Institute for Cosmic Ray Research
Astrophysics and Astronomy (A8) Hiroyuki SEKIYA Institute for Cosmic Ray Research Neutrino experiments and dark matter searches using Super-Kamiokande, EGADS, XMASS and other detectors. In order to detect the diffuse supernova neutrino background, R&Ds for Super-Kamiokande Gd project are ongoing.
Astrophysics and Astronomy (A8) Masato SHIOZAWA Institute for Cosmic Ray Research
Astrophysics and Astronomy (A8) Takashi UCHIYAMA Institute for Cosmic Ray Research
Astrophysics and Astronomy (A8) Mark VAGINS IPMU My research is focused on developing new methods of observing neutrinos, both through the enhancement of existing detectors like Super-Kamiokande (Super-K) and via the design and construction of future facilities like Hyper-Kamiokande. One of my main goals is to measure, for the first time, the diffuse supernova neutrino background (DSNB), often called the “relic” supernova neutrinos. Adding water-soluble gadolinium to Super-K - an idea I co-invented - should allow us to detect these relic neutrinos without having to build an all-new experiment. Enhancing Super-K in this manner will also make possible other new physics, including high-statistics reactor antineutrino oscillation studies, as well as improve studies of neutrino oscillations and proton decay searches.
Astrophysics and Astronomy (A8) Takanori YOSHIKOSHI Institute for Cosmic Ray Research T.Y. researches physics of celestial objects emitting very high energy gamma rays using imaging atmospheric Cherenkov telescope arrays. In particular, he aims to resolve the mystery of the origin of cosmic rays by observing supernova remnants, pulsar wind nebulae, etc. He is also doing R & D studies for next generation atmospheric Cherenkov telescopes.