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Stability of Accelerating Cosmology in Two Scalar-Tensor Theory: Little Rip versus de Sitter
Department of Physics, Nagoya University, Nagoya 464-8602, Japan
Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Nagoya 464-8602, Japan
Instituciò Catalana de Recerca i Estudis Avançats (ICREA) and Institut de Ciencies de l’Espai (IEEC-CSIC), Campus UAB, Facultat de Ciencies, Torre C5-Par-2a pl, E-08193 Bellaterra (Barcelona), Spain
Tomsk State Pedagogical University, 634041, Tomsk, Russia
* Author to whom correspondence should be addressed.
Received: 21 July 2012; in revised form: 14 August 2012 / Accepted: 16 August 2012 / Published: 23 August 2012
Abstract: 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.
Keywords: dark energy; scalar tensor theory; little rip
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Ito, Y.; Nojiri, S.; Odintsov, S.D. Stability of Accelerating Cosmology in Two Scalar-Tensor Theory: Little Rip versus de Sitter. Entropy 2012, 14, 1578-1605.
Ito Y, Nojiri S, Odintsov SD. Stability of Accelerating Cosmology in Two Scalar-Tensor Theory: Little Rip versus de Sitter. Entropy. 2012; 14(8):1578-1605.
Ito, Yusaku; Nojiri, Shin’ichi; Odintsov, Sergei D. 2012. "Stability of Accelerating Cosmology in Two Scalar-Tensor Theory: Little Rip versus de Sitter." Entropy 14, no. 8: 1578-1605.