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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 Linearized gravity ： ウィキペディア英語版 Linearized gravity Linearized gravity is an approximation scheme in general relativity in which the nonlinear contributions from the spacetime metric are ignored, simplifying the study of many problems while still producing useful approximate results. ==The method== In linearized gravity the metric tensor, $g$, of spacetime is treated as a sum of an exact solution of Einstein's equations (often Minkowski spacetime) and a perturbation $h$. :$g\; \backslash ,\; =\backslash eta+h$ where $\backslash eta$ is the nondynamical background metric that is being perturbed about, and $h$ represents the deviation of the true metric ($g$) from flat spacetime. The perturbation is treated using the methods of perturbation theory, "linearized" by ignoring all terms of order higher than one (quadratic in $h$, cubic in $h$ etc...) in the perturbation. 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「Linearized gravity」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.