Reconstructing the universe history, from inflation to acceleration, with phantom and canonical scalar fields

被引:210
作者
Elizalde, Emilio [1 ]
Nojiri, Shin'ichi [2 ]
Odintsov, Sergei D. [1 ,3 ]
Saez-Gomez, Diego [1 ]
Faraoni, Valerio [4 ]
机构
[1] Fac Ciencies, CSIC ICE, IEEC, Campus UAB, E-08193 Barcelona, Spain
[2] Nagoya Univ, Dept Phys, Nagoya, Aichi 4648602, Japan
[3] Fac Ciencies, ICREA, E-08193 Barcelona, Spain
[4] Bishops Univ, Dept Phys, Sherbrooke, PQ J1M 0C8, Canada
关键词
D O I
10.1103/PhysRevD.77.106005
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We consider the reconstruction technique in theories with a single or multiple (phantom and/or canonical) scalar fields. With the help of several examples, it is demonstrated explicitly that the universe expansion history, unifying early-time inflation and late-time acceleration, can be realized in scalar-tensor gravity. This is generalized to the theory of a scalar field coupled nonminimally to the curvature and to a Brans-Dicke-like theory. Different examples of unification of inflation with cosmic acceleration, in which de Sitter, phantom, and quintessence type fields play the fundanfental role-in different combinations-are worked out. Specifically, the frame dependence and stability properties of de Sitter space scalar field theory are studied. Finally, for two-scalar theories, the late-time acceleration and early-time inflation epochs are successfully reconstructed, in realistic situations in which the more and more stringent observational bounds are satisfied, using the freedom of choice of the scalar field potential, and of the kinetic factor.
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页数:16
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