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Observational Constraints on Brans-Dicke Theory with a Variable Cosmological Term
http://hdl.handle.net/2298/18115
http://hdl.handle.net/2298/1811507674ae1-cecf-4bf3-9486-92ddaa6dfb98
名前 / ファイル | ライセンス | アクション |
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PR0013_217-226.pdf (2.0 MB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2011-02-25 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Observational Constraints on Brans-Dicke Theory with a Variable Cosmological Term | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ | departmental bulletin paper | |||||
著者 |
Thushari, E.P.B.A.
× Thushari, E.P.B.A.× 中村, 理央× Hashimoto, Masa-aki× 荒井, 賢三 |
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内容記述 | ||||||
内容記述 | We investigate Big-Bang nucleosynthesis in the Brans-Dicke model with a variable cosmological term (BDA) for the coupling constant ω=10^4. The model parameters are constrained from comparison between the resulting abundance of ^4He, D and ^7Li and the observed ones. Furthermore, we examine the magnitude redshift (m-z) relation for the BDA with and without another constant cosmological term in a flat universe. Observational data of Type Ia Supernovae (SNIa) are used in the redshift range 0.01<z<2. It is found that BDA is inconsistent with the present accelerating universe but the model with a constant cosmological term with the value 0.7 can explain the SNIa data. The model parameters are insensitive to the m-z relation. | |||||
書誌情報 |
en : Physics Reports of Kumamoto University 巻 13, 号 2, p. 217-226, 発行年 2010 |
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ISSN | ||||||
収録物識別子 | 0303-4070 | |||||
NCID | ||||||
収録物識別子 | AA00774081 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
日本十進分類法 | ||||||
主題 | 443.5 | |||||
出版者 | ||||||
言語 | ja | |||||
出版者 | 熊本大学 |