Matter bounce loop quantum cosmology from F(R) gravity

被引:95
|
作者
Odintsov, S. D. [1 ,2 ]
Oikonomou, V. K. [3 ]
机构
[1] CSIC, Inst Ciencies Espai IEEC, E-08193 Barcelona, Spain
[2] ICREA, Barcelona 08010, Spain
[3] Aristotle Univ Thessaloniki, Dept Theoret Phys, Thessaloniki 54124, Greece
来源
PHYSICAL REVIEW D | 2014年 / 90卷 / 12期
关键词
DARK ENERGY; ETERNAL INFLATION; CONSTANT; MODELS; ACCELERATION; UNIVERSE; PHASE;
D O I
10.1103/PhysRevD.90.124083
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Using the reconstruction method, we investigate which F(R) theories, with or without the presence of matter fluids, can produce the matter bounce scenario of holonomy corrected loop quantum cosmology. We focus our study in two limits of the cosmic time, the large cosmic time limit and the small cosmic time limit. For the former, we find that, in the presence of noninteracting and nonrelativistic matter, the F(R) gravity that reproduces the late time limit of the matter bounce solution is actually the Einstein-Hilbert gravity plus a power law term. In the early time limit, since it corresponds to large spacetime curvatures, assuming that the Jordan frame is described by a general metric that, when it is conformally transformed to the Einstein frame, produces an accelerating Friedmann-Robertson-Walker metric, we find explicitly the scalar field dependence on time. After demonstrating that the solution in the Einstein frame is indeed accelerating, we calculate the spectral index derived from the Einstein frame scalar-tensor counterpart theory of the F(R) theory and compare it with the Planck experiment data. In order to implement the resulting picture, we embed the F(R) gravity explicitly in a loop quantum cosmology framework by introducing holonomy corrections to the F(R) gravity. In this way, the resulting inflation picture corresponding to the F(R) gravity can be corrected in order that it coincides to some extent with the current experimental data.
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页数:16
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