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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Conformal cyclic cosmology ： ウィキペディア英語版 Conformal cyclic cosmology The conformal cyclic cosmology (CCC) is a cosmological model in the framework of general relativity, advanced by the theoretical physicists Roger Penrose and Vahe Gurzadyan.〔Gurzadyan VG, Penrose R, "On CCC-predicted concentric low-variance circles in the CMB sky", Eur.Phys.J. Plus 128 (2013) 22; http://arxiv.org/abs/1302.5162〕 In CCC, the universe iterates through infinite cycles, with the future timelike infinity of each previous iteration being identified with the Big Bang singularity of the next. Penrose popularized this theory in his 2010 book ''Cycles of Time: An Extraordinary New View of the Universe''. ==Basic construction== Penrose's basic construction is to connect a countable sequence of open Friedmann–Lemaître–Robertson–Walker metric (FLRW) spacetimes, each representing a big bang followed by an infinite future expansion. Penrose noticed that the past conformal boundary of one copy of FLRW spacetime can be "attached" to the future conformal boundary of another, after an appropriate conformal rescaling. In particular, each individual FLRW metric $g\_$ is multiplied by the square of a conformal factor $\backslash Omega$ that approaches zero at timelike infinity, effectively "squashing down" the future conformal boundary to a conformally regular hypersurface (which is spacelike if there is a positive cosmological constant, as we currently believe). The result is a new solution to Einstein's equations, which Penrose takes to represent the entire universe, and which is composed of a sequence of sectors that Penrose calls "aeons". 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Conformal cyclic cosmology」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.