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Tag: Early universe

Research
2020.07.10

Assistant Professor Takeshi Kobayashi of the Kobayashi-Maskawa Institute for the Origin of Particles and the Universe (KMI), Nagoya University, proposes that an elementary particle called the axion could have been the origin of the cosmic structure of our universe. Astrophysical studies in the past decades have established that the cosmic structure, including galaxies and galaxy clusters, arises from tiny fluctuations in the energy density when the universe was young; however the origin of this primordial density fluctuation still remains one …