WEKO3
アイテム
Class of viable modified f(R) gravities describing inflation and the onset of accelerated expansion
http://hdl.handle.net/2237/11275
http://hdl.handle.net/2237/11275c449b4c5-3a82-426f-b4e1-1670d487120d
名前 / ファイル | ライセンス | アクション |
---|---|---|
![]() |
|
Item type | 学術雑誌論文 / Journal Article(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2009-03-09 | |||||
タイトル | ||||||
タイトル | Class of viable modified f(R) gravities describing inflation and the onset of accelerated expansion | |||||
言語 | en | |||||
著者 |
Cognola, G.
× Cognola, G.× Elizalde, E.× Nojiri, S.× Odintsov, S. D.× Sebastiani, L.× Zerbini, S. |
|||||
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 | A general approach to viable modified f(R) gravity is developed in both the Jordan and the Einstein frames. A class of exponential,realistic modified gravities is introduced and investigated with care. Special focus is made on step-class models, most promising from the phenomenological viewpoint and which provide a natural way to classify all viable modified gravities. One- and two-step models are explicitly considered, but the analysis is extensible to N-step models. Both inflation in the early universe and the onset of recent accelerated expansion arise in these models in a natural,unified way. Moreover,it is demonstrated that models in this category easily pass all local tests,including stability of spherical body solution, nonviolation of Newton's law, and generation of a very heavy positive mass for the additional scalar degree of freedom. | |||||
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.77.046009 | |||||
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 77, 号 4, p. 046009-046009, 発行日 2008-02 |
|||||
フォーマット | ||||||
application/pdf | ||||||
著者版フラグ | ||||||
値 | publisher | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/11275 | |||||
識別子タイプ | HDL |