Work

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

Year: 2005

Type: article

Abstract: 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.

Source: Physics Letters B

DOI: 10.1016/j.physletb.2005.06.017

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

Institutions: Inter-University Centre for Astronomy and Astrophysics, Lomonosov Moscow State University, National Institute of Technology, Gunma College

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid:

Funder: Japan Society for the Promotion of Science