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

Entropy

Yusaku Ito¹  Shin’ichi Nojiri¹ 

[1] Department of Physics, Nagoya University, Nagoya 464-8602, Japan; E-Mail:

关键词: dark energy;    scalar tensor theory;    little rip;   

DOI  :  10.3390/e14081578

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.