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Jido Lab
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This theory lab explores phenomena woven by the strong force in atomic nuclei and hadrons.
AboutAbout the lab
Physical phenomena woven by the strong interaction
The Jido Lab theoretically studies the physical phenomena produced by the strong interaction, one of the forces of nature, in atomic nuclei and hadrons.
The lab aims to understand the structure and dynamics of hadrons such as protons and neutrons from the behavior of the quarks and gluons inside them.
The lab also investigates how the properties of hadrons change when they are placed inside atomic nuclei.
To visit the lab, you can inquire by email.
Key terms
- Hadron
- A collective name for particles that experience the strong interaction, such as protons, neutrons, and pions.
- Quantum chromodynamics (QCD)
- The fundamental theory describing the strong interaction acting between quarks and gluons.
- Chiral symmetry
- A symmetry that determines the low-energy properties of hadrons. It is thought to be restored at high temperature or high density.
NewsLab news
A postdoctoral researcher received the HPCI Outstanding Research Achievement Award for a research project using HPCI
Paper on the spectra of antiprotonic atoms and nuclear density distributions published in Progress of Theoretical and Experimental Physics
Paper on the properties of pions in asymmetric nuclear matter accepted for publication in Physical Review C
Paper on the dynamical breaking of chiral symmetry published in Physical Review D
Paper on the K⁻d reaction as a probe of the ΛN interaction published in Physical Review C
ResearchResearch themes
The lab conducts theoretical research on nuclear and hadron physics. Its main themes are the structure and dynamics of hadrons and hadrons inside atomic nuclei, with the aim of understanding the phenomena produced by the strong interaction.
*Illustrative imageHadrons and their excited states
The low-energy properties of hadrons are determined by chiral symmetry and its dynamical breaking. From this perspective, the lab systematically investigates the structure and dynamics of hadrons and their excited states.
*Illustrative imageExotic hadrons
Discoveries of new types of hadrons made of four or five quarks have been reported one after another. The lab examines their possible existence using QCD sum rules and models of hadronic many-body systems, and predicts new exotic hadrons.
*Illustrative imageHadrons in atomic nuclei
Inside atomic nuclei, hadrons show properties different from those they have when isolated in vacuum. Using clues such as deeply bound states of mesic atoms, the lab investigates how the properties of hadrons change depending on their environment.
*Illustrative imageChanges in the 'vacuum' and chiral symmetry
Inside atomic nuclei, chiral symmetry is thought to be partially restored, changing the 'QCD vacuum.' The lab explores ways to confirm this change, aiming to elucidate phenomena in which quark degrees of freedom appear in nuclei.
MembersFaculty
The Jido Lab consists of faculty members, postdoctoral researchers, and PhD, master's, and undergraduate students.As of 2026
- ProfessorDaisuke JidoPublications ↗
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Quantum Fluctuations” Derek Leinweber / CC BY-SA 4.0 (cropped)
- Hadrons and their excited states: “Proton and neutron” User:Harp, User:Harp File:Quark structure proton.svg: Harp File:Quark structure neutron.svg: Harp Derived work: PelicanTwo / CC BY-SA 4.0 (cropped)
- Exotic hadrons: “PQ EB ape hyp geom5 B 3D” Pedro.bicudo / CC BY-SA 4.0 (cropped)
- Hadrons in atomic nuclei: “Lead-Ion Collision at NA49-CERN” CERN PhotoLab / CC BY 4.0 (cropped)
- Changes in the 'vacuum' and chiral symmetry: “PhasDiag” Rajeev S. Bhalerao(Tata Inst.) / CC BY 4.0 (cropped)
- Related lab (藤岡研究室): “J-PARC Hadron Experimental Facility 1” Kestrel / CC BY-SA 4.0 (cropped)
- Related lab (高峰研究室): “NuclideMap stitched 2” NuclideMap.PNG: The viewer derivative work: Neokortex (talk) / Public domain (cropped)
- Related lab (平原研究室): “Graphite-layers-side-3D-balls” Benjah-bmm27 / Public domain (cropped)
- Related lab (中村研究室): “RIKEN Superconducting Ring Cyclotron P4213478” Kestrel / CC BY-SA 4.0 (cropped)
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