Dynamics of inflation and dark energy from F (R, G) gravity

被引:83
|
作者
Odintsov, S. D. [1 ,2 ,3 ]
Oikonomou, V. K. [4 ,5 ,6 ]
Banerjee, S. [7 ]
机构
[1] ICREA, Passeig Luis Co 23, Barcelona 08010, Spain
[2] CSIC, Inst Space Sci ICE, C Can Magrans S-N, Barcelona 08193, Spain
[3] Inst Space Sci Catalonia IEEC, Barcelona, Spain
[4] Aristotle Univ Thessaloniki, Dept Phys, Thessaloniki 54124, Greece
[5] Tomsk State Univ Control Syst & Radioelect TUSUR, Lab Theoret Cosmol, Tomsk 634050, Russia
[6] Tomsk State Pedag Univ, Tomsk 634061, Russia
[7] Tata Inst Fundamental Res, Bombay, Maharashtra, India
关键词
COSMOLOGICAL SOLUTIONS; BOUNCING COSMOLOGIES; MODELS; RECONSTRUCTION; QUINTESSENCE; CONSTANT; UNIVERSE;
D O I
10.1016/j.nuclphysb.2018.07.013
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
In this work we study certain classes of F(R, G) gravity which have appealing phenomenological features, with respect to the successful realization of the dark energy and of the inflationary era. Particularly, we discuss the general formalism and we demonstrate how several inflationary and dark energy evolutions can be described in the context of F(R, G) gravity. Also we propose a unified model, in the context of which the early and late-time dynamics are controlled by the F(R, G) gravity, thus producing inflation and the dark energy era, while the intermediate era is approximately identical with standard Einstein-Hilbert gravity. Also we calculate the power spectrum of the primordial curvature perturbations corresponding to the unified F(R, G) gravity model we propose, which as we demonstrate is nearly scale invariant and compatible with the latest observational data constraints. (C) 2018 The Authors. Published by Elsevier B.V.
引用
收藏
页码:935 / 956
页数:22
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