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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

Unimodular-mimetic cosmology

http://hdl.handle.net/2237/25094
http://hdl.handle.net/2237/25094
60c73ccd-a4b4-4835-a55d-06d528f410cd
名前 / ファイル ライセンス アクション
1601_07057.pdf 1601_07057.pdf ファイル公開:2017/05/13 (289.1 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2016-11-24
タイトル
タイトル Unimodular-mimetic cosmology
言語 en
著者 Nojiri, S.

× Nojiri, S.

WEKO 67458

en Nojiri, S.

Search repository
Odintsov, S.D.

× Odintsov, S.D.

WEKO 67459

en Odintsov, S.D.

Search repository
Oikonomou, V.K.

× Oikonomou, V.K.

WEKO 67460

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 This is an author-created, un-copyedited version of an article accepted for publication in CLASSICAL AND QUANTUM GRAVITY. The publisher is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at [http://doi.org/10.1088/0264-9381/33/12/125017].
抄録
内容記述 We combine the unimodular gravity and mimetic gravity theories into a unified theoretical framework, which is proposed to provide a suggestive proposal for a framework that may assist in the discussion and search for a solution to the cosmological constant problem and the dark matter issue. After providing the formulation of the unimodular mimetic gravity and investigating all the new features that the vacuum unimodular gravity implies, by using the underlying reconstruction method, we realize some well known cosmological evolutions, with some of these being exotic for the ordinary Einstein–Hilbert gravity. Specifically we provide the vacuum unimodular mimetic gravity description of the de Sitter cosmology and of the perfect fluid with constant equation of state cosmology. As we demonstrate, these cosmologies can be realized by vacuum mimetic unimodular gravity, without the existence of any matter fluid source. Moreover, we investigate how cosmologically viable cosmologies, which are compatible with the recent observational data, can be realized by the vacuum unimodular mimetic gravity. Since in some cases, a graceful exit from inflation problem might exist, we provide a qualitative description of the mechanism that can potentially generate the graceful exit from inflation in these theories, by searching for the unstable de Sitter solutions in the context of unimodular mimetic theories of gravity.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 IOP publishing
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 AM
出版タイプResource http://purl.org/coar/version/c_ab4af688f83e57aa
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1088/0264-9381/33/12/125017
ISSN
収録物識別子タイプ PISSN
収録物識別子 0264-9381
書誌情報 en : Classical and Quantum Gravity

巻 33, p. 125017-125017, 発行日 2016-05-13
著者版フラグ
値 author
URI
識別子 http://doi.org/10.1088/0264-9381/33/12/125017
識別子タイプ DOI
URI
識別子 http://hdl.handle.net/2237/25094
識別子タイプ HDL
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