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Suyama Lab
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This theoretical cosmology lab takes on the mysteries of the beginning of the universe and black holes.
AboutAbout the lab
Taking on the key questions of cosmology
The Suyama Lab studies the origin and structure of the universe from a theoretical standpoint.
Modern cosmology, with inflation as its pillar, is now almost established, but comparison with observations has brought fundamental mysteries into sharper focus.
The lab tackles topics such as the early universe, primordial black holes, gravitational waves, and gravitational lensing, from diverse perspectives and without preconceptions.
Lab visits are accepted at any time with a prior reservation.
Key terms
- Inflation
- A period in which the newborn universe is thought to have expanded rapidly in an extremely short time.
- Primordial black hole
- A black hole thought to have formed in the early universe from irregularities in the density of matter.
- Gravitational wave
- A phenomenon in which distortions of spacetime, produced by events such as the motion of massive objects, propagate as waves.
ResearchResearch themes
The lab works on a wide range of topics concerning the origin and structure of the universe. From the physics of the early universe to probing the universe with gravitational waves and gravitational lensing, it conducts theoretical research.
*Illustrative imageInflation
Inflation, the rapid expansion at the very beginning of the universe, is central to explaining the origin of cosmic structure. The lab focuses on the properties and evolution, at small scales, of the fluctuations generated during this period.
*Illustrative imageReheating and the early universe
Reheating is the period after inflation when its energy is converted into particles and the universe moves into a hot state. Observational clues are scarce, and probing it with high-frequency gravitational waves is attracting attention.
*Illustrative imagePrimordial black holes
The lab studies primordial black holes, which can form from large density fluctuations in the early universe. They are sensitive to small-scale fluctuations and offer clues to the final stage of inflation.
*Illustrative imageGravitational-wave astronomy
The lab conducts research on cosmology and fundamental physics using gravitational waves. Gravitational waves also make it possible to test the laws of gravity in strong gravitational fields such as those around black holes.
MembersFaculty
The Suyama Lab consists of faculty members, postdocs, and PhD and master's students.As of 2026
- ProfessorTeruaki SuyamaPublications ↗
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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Notomi LabSchool of Science, Department of PhysicsNanophotonics, photonic crystals, metamaterialsThe information on this page is compiled by the LabLog team from the lab's public information and interviews. For corrections or removal requests, please contact LabLog, not the lab.
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: “Gravitational lensing in the galaxy cluster Abell 370 (captured by the Hubble Space Telescope)” NASA, ESA, the Hubble SM4 ERO Team and ST-ECF / CC BY 4.0 (cropped)
- Inflation: “WMAP 2012” NASA / WMAP Science Team / Public domain (cropped)
- Reheating and the early universe: “CMB Timeline300 no WMAP” NASA/WMAP Science Team / Public domain (cropped)
- Primordial black holes: “Black hole - Messier 87” Event Horizon Telescope / CC BY 4.0 (cropped)
- Gravitational-wave astronomy: “Aerial View Of LIGO Hanford” Caltech/MIT/LIGO Laboratory / Public domain (cropped)
- Related lab (藤澤研究室): “Dilution Fridge 008 16K” OJB Quantum / CC BY 4.0 (cropped)
- Related lab (宗宮研究室): “In-construction KAGRA gravitational-wave detector” Christopher Berry / CC BY-SA 4.0 (cropped)
- Related lab (山口研究室): “WMAP 2012” NASA / WMAP Science Team / Public domain (cropped)
- Related lab (納富研究室): “Entimus imperialis' photonic crystal” Sébastien R. Mouchet & Jean-François Colomer / CC BY-SA 4.0 (cropped)
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