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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 Holeum ： ウィキペディア英語版 Holeum Holeums are hypothetical stable, quantized gravitational bound states of primordial or micro black holes. Holeums were proposed by L.K. Chavda and Abhijit Chavda in 2002.〔L.K. Chavda & Abhijit Chavda, (Dark matter and stable bound states of primordial black holes )〕 They have all the properties associated with cold dark matter. Holeums are not black holes, even though they are made up of black holes. ==Properties== The binding energy $E\_$ of a holeum that consists of two identical micro black holes of mass $m$ is given by〔L.K. Chavda & Abhijit Chavda, (Dark matter and stable bound states of primordial black holes )〕 : $E\_=-\backslash frac^\}$ is the gravitational counterpart of the fine structure constant. The latter is given by : $\backslash alpha\_=\backslash frac=\backslash frac^\}$ where: : $\backslash hbar$ is the Planck constant divided by $2\backslash pi$; : $c$ is the speed of light in vacuum; : $G$ is the gravitational constant. The ''n''th excited state of a holeum then has a mass that is given by : $m\_=2m+\backslash frac\}$ The holeum's atomic transitions cause it to emit gravitational radiation. The radius of the ''n''th excited state of a holeum is given by : $r\_=\backslash left(\; \backslash frac\}\backslash right)\; \backslash left(\; \backslash frac\{c^\{2\}\}\backslash right)$ is the Schwarzschild radius of the two identical micro black holes that constitute the holeum. The holeum is a stable particle. It is the gravitational analogue of the hydrogen atom. It occupies space. Although it is made up of black holes, it itself is not a black hole. As the holeum is a purely gravitational system, it emits only gravitational radiation and no electromagnetic radiation. The holeum can therefore be considered to be a dark matter particle.〔M. Yu. Khlopov, (Primordial Black Holes )〕 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「Holeum」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.