Precision cosmology from high-precision theoretical template for large-scale structure of the Universe

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Recent progress on cosmological observations has led to the establishment of the" standard cosmologica", and the cosmology is now going to enter the era of precision cosmology, to deeply understand the nature and origin of the Universe. In the coming decade, extremely large-scale and/or high-precision cosmological observations will be the keys to improve our understanding of the Universe, and in order to detect/measure a weak but physically important signal, highly demanding is the precision theoretical template for cosmological measurements. In this project, we have focused on the large-scale structure of the universe as a promising cosmological probe, and developed analytical frameworks to compute high-precision theoretical template for next-generation galaxy redshift surveys. Based on the perturbation theory of large-scale structure, we have succeeded to incorporate the various observational/physical systematics into the precision template, including the non-linear gravitational evolution, redshift-space distortions, and galaxy biasing. The theoretical template developed in this project will play a very crucial role to interpret cosmological data from upcoming spectroscopic surveys such as SuMIRe project(Subaru Measurement of Imaging and Redshifts) in Japanese astronomy and cosmology group.