Dark energy and modified gravity

Shinji Tsujikawa*

*この研究の対応する著者

研究成果: Conference contribution

抄録

The current accelerated expansion of the Universe may originate from some modification of gravitational theories. We derive the conditions under which f(R) DE models are cosmologically viable, where f(R) is a function of the Ricci scalar R. We study the evolution of the equation of state of DE, matter perturbations and local gravity constraints in such models and discuss methods to distinguish modified gravity models from the ACDM cosmology.

本文言語English
ホスト出版物のタイトルKEK Cosmophysics Group Inaugural Conference - Accelerators in the Universe - Interplay between High Energy Physics and Cosmophysics
ページ18-22
ページ数5
DOI
出版ステータスPublished - 2008
外部発表はい
イベントKEK Cosmophysics Group Inaugural Conference - Accelerators in the Universe, AIU 2008 - Tsukuba, Japan
継続期間: 2008 3月 122008 3月 14

出版物シリーズ

名前AIP Conference Proceedings
1040
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

Conference

ConferenceKEK Cosmophysics Group Inaugural Conference - Accelerators in the Universe, AIU 2008
国/地域Japan
CityTsukuba
Period08/3/1208/3/14

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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