| Aim of conference | The intrinsic non-linear nature of gravity brings to cosmological perturbations the statistics with deviation from Gaussian one. The origin of this non-Gaussianity of cosmological perturbations could lie either in their generation in the early universe or in their evolution through hot big bang cosmology. Moreover, its cosmological impacts are well beyond the temperature fluctuations of the cosmic microwave background: small collapsed objects such as primordial black holes and compact haloes may be more abundant, the distribution of baryonic matter may follow that of dark matter in a different manner on different distance scales, and so on. Thus the search for non-Gaussianity of cosmological perturbations is no more restricted to the cosmic microwave background, but now we have a refined, modernized view such that how much impact non-Gaussianity will bring to the observable structure in the universe. Such observable signatures will be the goals of importance for ongoing and future surveys on the cosmic microwave background and the large-scale distribution of galaxies.
The aim of the workshop is, facing the observational progress, to promote stimulating and intensive discussions among the experts on the theoretical perspectives on non-Gaussianity and to initiate possible collaborations. It will lead to deeper understanding on theoretical aspects of non-Gaussianity and the physics behind it. We plan to have per day a couple of discussion-oriented presentations by participants on various theoretical aspects of non-Gaussianity, leaving ample amount of time for further intensive discussions.
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| Invited Speakers | Alexander Vikman (CEICO), Masahide Yamaguchi (TiTech), Daisuke Yamauchi (Kanagawa U.), Atsushi Naruko (YITP) |
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| Date and Venue | Nov. 18-22, 2019
Room K102, 202, YITP, Kyoto, Japan |
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| SOC/LOC | Jinn-Ouk Gong (KASI), Shuichiro Yokoyama (Nagoya U.), Atsushi Naruko, Takahiro Nishimichi, Atsushi Taruya (YITP) |
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| Support | JSPS KAKENHI Grant No. JP19H01891. |
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