Are f(R) dark energy models cosmologically viable?

Luca Amendola*, David Polarski, Shinji Tsujikawa

*この研究の対応する著者

研究成果: Article査読

403 被引用数 (Scopus)

抄録

All f(R) modified gravity theories are conformally identical to models of quintessence in which matter is coupled to dark energy with a strong coupling. This coupling induces a cosmological evolution radically different from standard cosmology. We find that, in all f(R) theories where a power of R is dominant at large or small R (which include most of those proposed so far in the literature), the scale factor during the matter phase grows as t1/2 instead of the standard law t2/3. This behavior is grossly inconsistent with cosmological observations (e.g., Wilkinson Microwave Anisotropy Probe), thereby ruling out these models even if they pass the supernovae test and can escape the local gravity constraints.

本文言語English
論文番号131302
ジャーナルPhysical Review Letters
98
13
DOI
出版ステータスPublished - 2007 3月 30
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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