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Hukushima Lab
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The lab takes on phase transitions and computational hardness through the statistical mechanics of random systems.
AboutAbout the lab
What happens when many come together?
The Hukushima Lab is a lab grounded in statistical physics.
Building on the statistical mechanics of random systems rooted in spin glass theory, the lab focuses on random magnets and the theory of phase transitions.
From there, its research extends to the theory of glasses, computational complexity theory, data-driven science, and the development of computational physics methods.
The lab aims for "Undisciplined Science," research that is not confined by the boundaries of any field.
Key terms
- Statistical mechanics
- A theory that uses probability to study the collective behavior of systems made up of many particles.
- Spin glass
- A magnetic material in which the interactions between spins are determined randomly. It falls into a state that is frozen in a disordered configuration.
- Phase transition
- An abrupt change in the state of a substance when temperature or other conditions are varied, such as water turning into ice.
NewsLab news
Collaborative paper published in the Journal of Chemical Physics
Collaborative research on power laws in natural language accepted at TACL
A student's VAE replica paper published in JSTAT
A doctoral student received the Ikko Memorial Prize
A student's min-max paper published in TMLR
ResearchResearch themes
The Hukushima Lab is a statistical physics lab. It studies systems with many degrees of freedom using the methods of statistical mechanics, and examines phenomena specific to such systems, such as phase transitions that arise from large numbers of particles. The lab finds it fascinating that systems with the same microscopic constituents can have completely different macroscopic equations of state.
*Illustrative imageStatistical Mechanics of Random Systems
The lab mainly studies the statistical-mechanical properties of "random" systems and systems with competing interactions. Competition refers to a situation in which satisfying one side leaves the other unsatisfied. Such systems have many states in which not everyone can be fully satisfied, but everyone compromises a little. The lab investigates the properties of these many states from a physical perspective.
*Illustrative imageDevelopment of Computational Physics Methods
The lab actively uses computational physics methods. Believing that simply applying existing methods is dull, it is interested in developing methods that make possible what no one could compute before. One example is research that tries breaking the detailed balance condition in Monte Carlo methods.
*Illustrative imageData-Driven Science
When a large amount of microscopic information is obtained from experiments or numerical calculations, deciding what to extract from it is a difficult problem. The lab has pursued its research out of an interest in clarifying what can and cannot be learned from large amounts of data.
MembersFaculty
The members of the Hukushima Lab consist of faculty, doctoral and master's students, administrative assistants, and a special advisor.As of 2026
- ProfessorKoji HukushimaPublications ↗
VoicesStudent voices
Compiled from answers by students who were in the lab. Ratings and reviews reflect individual students' experiences, not the lab's official views.
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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: “Nucleation in the Ising Model (2D)” Abraham Hinteregger / CC BY-SA 3.0 (cropped)
- Statistical Mechanics of Random Systems: “Ising-tartan” Linas at English Wikipedia / CC BY-SA 3.0 (cropped)
- Development of Computational Physics Methods: “FMFluxogramaMetropolis” Llcastro / CC BY-SA 2.5 (cropped)
- Data-Driven Science: “Andrews curve for Iris data set” Fatdragon2 / CC BY-SA 4.0 (cropped)
- Related lab (Arai Lab): “Myoglobin” AzaToth / Public domain (cropped)
- Related lab (Yokogawa Lab): “Separatory funnel with oil and colored water” PRHaney / CC BY-SA 3.0 (cropped)
- Related lab (Nonequilibrium Theory Lab (Ikeda Group)): “Mayonnaise (1)” jules / CC BY 2.0 (cropped)
- Related lab (Shiomi Lab): “Magnetite-118736” Robert M. Lavinsky / CC BY-SA 3.0 (cropped)
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