Inflation as a transient attractor in R2 cosmology

Kei Ichi Maeda*

*この研究の対応する著者

研究成果: Article査読

173 被引用数 (Scopus)

抄録

Using the equivalence between the curvature-squared gravity theory and the Einstein theory with a scalar field, we show that the potential in the latter system has a very flat plateau. It turns out that inflation is quite natural but transient in the R2 cosmology. All anisotropic Bianchi types of space-time except IX approach the de Sitter solution as an attractor, followed by the Friedmann universe after sufficient inflation. We find a similar behavior in higher- (4<D<10) dimensional theories, in which inflation is not exponential-type but power-law-type. The dilaton coupling to the R2 term is also investigated. The coupling destroys the inflationary solution.

本文言語English
ページ(範囲)858-862
ページ数5
ジャーナルPhysical Review D
37
4
DOI
出版ステータスPublished - 1988
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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