Stability of Accelerating Cosmology in Two Scalar-Tensor Theory: Little Rip <em>versus</em> de Sitter

We develop the general reconstruction scheme in two scalar model. The quintom-like theory which may describe (different) non-singular Little Rip or de Sitter cosmology is reconstructed. The number of scalar phantom dark energy models (with Little Rip cosmology or asymptotically de Sitter evolution)...

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Bibliographic Details
Main Authors: Yusaku Ito, Shin’ichi Nojiri, Sergei D. Odintsov
Format: Article
Language:English
Published: MDPI AG 2012-08-01
Series:Entropy
Subjects:
Online Access:http://www.mdpi.com/1099-4300/14/8/1578
Description
Summary:We develop the general reconstruction scheme in two scalar model. The quintom-like theory which may describe (different) non-singular Little Rip or de Sitter cosmology is reconstructed. The number of scalar phantom dark energy models (with Little Rip cosmology or asymptotically de Sitter evolution) is presented. Stability issue of such dark energy cosmologies as well as the flow to fixed points are studied. The stability of Little Rip universe which leads to dissolution of bound objects sometime in future indicates that no classical transition to de Sitter space occurs. The possibility of unification of inflation with Little Rip dark energy in two scalar theory is briefly mentioned.
ISSN:1099-4300