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Yokoyama Lab
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A lab that explores the beginning of the universe through theories of particle physics and general relativity.

AboutAbout the lab
Decoding the beginning of the universe through theory.
The Yokoyama Lab carries out theoretical research in cosmology, focusing on the early universe, the period right after the universe began.
It mainly deals with particle-physics and relativistic cosmology, and with how the structure of the universe has evolved.
The lab draws on both fundamental theories such as quantum field theory and general relativity, and observational data such as the cosmic microwave background.
It also conducts fundamental research in related areas, such as gravitational theory and non-equilibrium quantum field theory, as needed.
Key terms
- Cosmic microwave background
- Microwave radiation released about 380,000 years after the universe was born, which still reaches us today from all directions in space
- General relativity
- Einstein's theory that explains gravity as the curvature of space and time
- Quantum field theory
- A theory of quantum mechanics that treats elementary particles as fluctuations of "fields" spread throughout space
NewsLab news
View More ↗ResearchResearch themes
The lab pursues theoretical research in cosmology, focusing on particle-physics and relativistic cosmology and on the evolution of cosmic structure. It conducts top-down research that starts from fundamental theories and bottom-up research that starts from observational data in parallel.
View More ↗MembersFaculty
The members of the Yokoyama Lab consist of faculty members, project researchers, research fellows, visiting collaborative researchers, and doctoral and master's students.
- ProfessorJun'Ichi YokoyamaPublications ↗
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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: “Oldest Light in the Universe (SVS30133)” NASA's Scientific Visualization Studio - Marit Jentoft-Nilsen, Global Science and Technology, Inc./Mark Malanoski / Public domain (cropped)
- Theory of the Early Universe: “Cosmic Microwave Background ( )” Mark McCaughrean / CC BY-SA 4.0 (cropped)
- Related lab (Liang Lab): “NuclideMap stitched 2” NuclideMap.PNG: The viewer derivative work: Neokortex (talk) / Public domain (cropped)
- Related lab (Fukushima Lab): “Lead-Ion Collision at NA49-CERN” CERN PhotoLab / CC BY 4.0 (cropped)
- Related lab (Yamazaki Lab): “E8Petrie with color 3D vertices” Jgmoxness / CC BY-SA 4.0 (cropped)
- Related lab (Yako Lab (CNS Experimental Nuclear Physics)): “RIKEN Superconducting Ring Cyclotron P4213478” Kestrel / CC BY-SA 4.0 (cropped)
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