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  1. B100 理学部/理学研究科
  2. B100a 雑誌掲載論文
  3. 学術雑誌

Viable mimetic completion of unified inflation-dark energy evolution in modified gravity

http://hdl.handle.net/2237/25579
http://hdl.handle.net/2237/25579
6b54e0a7-86df-42a6-b44f-a1367fbc9c4c
名前 / ファイル ライセンス アクション
PhysRevD_94_104050.pdf PhysRevD_94_104050.pdf (226.1 kB)
Item type 学術雑誌論文 / Journal Article(1)
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.

WEKO 69331

en Nojiri, S.

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Odintsov, S. D.

× Odintsov, S. D.

WEKO 69332

en Odintsov, S. D.

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Oikonomou, V. K.

× Oikonomou, V. K.

WEKO 69333

en Oikonomou, V. K.

Search repository
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
出版者
言語 en
出版者 American Physical Society
言語
言語 eng
資源タイプ
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.94.104050
ISSN
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
著者版フラグ
値 publisher
URI
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
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