The fate of (phantom) dark energy universe with string curvature corrections

M. Sami, Alexey Toporensky, Peter V. Tretjakov, Shinji Tsujikawa

研究成果: Article査読

144 被引用数 (Scopus)

抄録

We study the evolution of (phantom) dark energy universe by taking into account the higher-order string corrections to Einstein-Hilbert action with fixed dilaton and modulus fields. While the presence of a cosmological constant gives stable de Sitter fixed points in the cases of heterotic and bosonic strings, no stable de Sitter solutions exist when a phantom fluid is present. We find that the universe can exhibit a Big Crunch singularity with a finite time for type II string, whereas it reaches a Big Rip singularity for heterotic and bosonic strings. Thus the fate of dark energy universe crucially depends upon the type of string theory under consideration.

本文言語English
ページ(範囲)193-200
ページ数8
ジャーナルPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
619
3-4
DOI
出版ステータスPublished - 2005 7 21
外部発表はい

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学

フィンガープリント

「The fate of (phantom) dark energy universe with string curvature corrections」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル