Quark Nuclear Science Institute
The University of Tokyo
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In July 2024, the Quark Nuclear Science Institute (QNSI) was established with the goal of driving innovative advancements in nuclear physics by studying quantum many-body systems on the femtometer scale (one trillionth of a millimeter, or one-millionth of a nanometer) and even smaller. The institute comprises three research divisions: the Nuclear Many-Body Systems Research Division, the Quark
Many-Body Research Division, and the High-Energy QCD Research Division, which together drive research across the entire energy region of nuclear physics, from low to high energies. The research is conducted using cutting-edge particle accelerators around the world, and is further enhanced by collaboration with large-scale computational facilities and quantum computers for theoretical
studies.
We conduct research on femto-scale quantum many-body systems across all energy ranges: low, intermediate, and high energies.
Just as you cannot observe stars with a microscope or study cells with a telescope, in the femtometer world, it is essential to use the optimal observational instruments (accelerators) depending on the subject of study. At QNSI, we drive our research through a combination of experiments using state-of-the-art particle accelerators around the world, and theoretical work supported by large-scale computing facilities and quantum computers, tailored to the specific research subjects.
Nucleon Many-Body Systems Division
This division investigates the properties of atomic nuclei, which are quantum many-body systems composed of nucleons (protons and neutrons).
The RIKEN Nishina Center for Accelerator-Based Science's RI Beam Factory is a major research facility for this division.
Quark Many-Body Systems Division
This division studies the properties of quantum many-body systems composed of quarks hidden within nucleons. It conducts research on hypernuclei, which include strange quarks, as well as hadrons.
Major research facilities include the J-PARC Hadron Experimental Facility and the Jefferson Laboratory (JLab) in the United States.
High-Energy QCD Division
While nucleons are said to be composed of three quarks, the "vacuum" within nucleons is actually filled with quarks, antiquarks, and gluons, which mediate strong interactions.
To advance research in this area, we are leading the Electron-Ion Collider (EIC) project, which will be established at the Brookhaven National Laboratory (BNL) in the United States.
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