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

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dc.creatorSami, M.
dc.creatorToporensky, Alexey
dc.creatorTretjakov, Peter V.
dc.creatorTsujikawa, Shinji
dc.date2005-04-19
dc.date2005-06-09
dc.date.accessioned2026-07-07T13:11:36Z
dc.date.available2026-07-07T13:11:36Z
dc.descriptionWe study the evolution of (phantom) dark energy universe by taking into account the higher-order string corrections to Einstein-Hilbert action with a fixed dilaton. 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.
dc.description6 pages and 3 figures, discussion on dynamically evolving dilaton and modulus included, references added, version to appear in Physics Letters B
dc.identifierhttps://arxiv.org/abs/hep-th/0504154
dc.identifierhttp://arxiv.org/abs/hep-th/0504154
dc.identifierPhys.Lett.B619:193,2005
dc.identifierdoi:10.1016/j.physletb.2005.06.017
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/229332
dc.subjectHigh Energy Physics - Theory
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Phenomenology
dc.titleThe fate of (phantom) dark energy universe with string curvature corrections
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