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Viable mimetic completion of unified inflation-dark energy evolution in modified gravity
http://hdl.handle.net/2237/25579
http://hdl.handle.net/2237/255796b54e0a7-86df-42a6-b44f-a1367fbc9c4c
名前 / ファイル | ライセンス | アクション |
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PhysRevD_94_104050.pdf (226.1 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-02-15 | |||||
タイトル | ||||||
タイトル | Viable mimetic completion of unified inflation-dark energy evolution in modified gravity | |||||
言語 | en | |||||
著者 |
Nojiri, S.
× Nojiri, S.× Odintsov, S. D.× Oikonomou, V. K. |
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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 | © 2016 American Physical Society | |||||
抄録 | ||||||
内容記述 | In this paper, we demonstrate that a unified description of early and late-time acceleration is possible in the context of mimetic F(R) gravity. We study the inflationary era in detail and demonstrate that it can be realized even in mimetic F(R) gravity where traditional F(R) gravity fails to describe the inflation. By using standard methods we calculated the spectral index of primordial curvature perturbations and the scalar-to-tensor ratio. We use two F(R) gravity models and as it turns out, for both the models under study the observational indices are compatible with both the latest Planck and the BICEP2/Keck array data. However, this is only true under some model-dependent fine-tuning, which constrains the models we study. Finally, the graceful exit from inflation issue is addressed, and as we show, the curvature perturbations may trigger the graceful exit from inflation when the slow-roll era ends. However, fine-tuning is needed in order to produce enough inflation by the end of the slow-roll era. | |||||
言語 | en | |||||
内容記述タイプ | Abstract | |||||
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言語 | en | |||||
出版者 | American Physical Society | |||||
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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 | |||||
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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.94.104050 | |||||
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収録物識別子タイプ | PISSN | |||||
収録物識別子 | 2470-0010 | |||||
書誌情報 |
en : Physical Review D 巻 94, p. 104050-104050, 発行日 2016-11-22 |
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値 | publisher | |||||
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識別子 | https://doi.org/10.1103/PhysRevD.94.104050 | |||||
識別子タイプ | DOI | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/25579 | |||||
識別子タイプ | HDL |