Establishment and applications of cosmological integrated perturbation theory

2015 Fiscal Year Final Research Report

• Project/Area Number: 24540267
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Nagoya University
• Principal Investigator: Matsubara Takahiko 名古屋大学, 理学(系)研究科(研究院), 准教授 (00282715)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 宇宙論 / 宇宙の大規模構造 / 宇宙マイクロ波背景放射 / 非線形摂動論

Outline of Final Research Achievements

For the purpose of describing the nonlinear phenomena and observable features in the large-scale structure of the universe, the "integrated perturbation theory" is developed and completed. In the large-scale structure, there are complicated processes of dynamical nonlinear effects, nonlinear redshift-space distortions and galaxy biasing. This complicated problems are systematically treated by the theoretical method of the integrated perturbation theory. Various problems in the weakly nonlinear phenomena in the large-scale structure are actually shown to be solved by this general method. These findings are compared with large-scale numerical simulations, and the accuracy of the method and applicability region are quantified.

Free Research Field

宇宙論