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Delicate f(R) gravity models with a disappearing cosmological constant and observational constraints on the model parameters
http://hdl.handle.net/2237/11278
http://hdl.handle.net/2237/11278757f56d4-481e-45d4-81a2-9e591a1828ab
名前 / ファイル | ライセンス | アクション |
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PhysRevD_78_083515.pdf (364.8 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2009-03-09 | |||||
タイトル | ||||||
タイトル | Delicate f(R) gravity models with a disappearing cosmological constant and observational constraints on the model parameters | |||||
言語 | en | |||||
著者 |
Dev, Abha
× Dev, Abha× Jain, Deepak× Jhingan, S.× Nojiri, S.× Sami, M.× Thongkool, I. |
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アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | American Physical Society, All rights reserved. | |||||
抄録 | ||||||
内容記述 | We study the f(R) theory of gravity using the metric approach. In particular we investigate the recently proposed model by Hu and Sawicki; Appleby and Battye; and Starobinsky. In this model, the cosmologicalconstant is zero in flat space time. The model passes both the solar system and the laboratory tests. But the model parameters need to be fine-tuned to avoid the finite time singularity recently pointed to in the literature. We check the concordance of this model with the H(z) and baryon acoustic oscillation data. We find that the model resembles the ΛCDM at high redshift. However, for some parameter values there are variations in the expansion history of the universe at low redshift. | |||||
言語 | en | |||||
内容記述タイプ | Abstract | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | American Physical Society | |||||
言語 | ||||||
言語 | eng | |||||
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資源タイプresource | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1103/PhysRevD.78.083515 | |||||
ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 1550-7998 | |||||
書誌情報 |
en : PHYSICAL REVIEW D 巻 78, 号 8, p. 083515-083515, 発行日 2008-10 |
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application/pdf | ||||||
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値 | publisher | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/11278 | |||||
識別子タイプ | HDL |