Cosmic scenario with Einstein-Gauss-Bonnet gravity

被引:0
|
作者
Sarkar, Kaushik [1 ]
Modak, B. [2 ]
机构
[1] Bankura Univ, Dept Phys, Bankura 722155, India
[2] Univ Kalyani, Dept Phys, Kalyani 741235, India
关键词
Einstein-Gauss-Bonnet dilaton interaction; slow-roll approximation; bouncing solution and inflation; INFLATIONARY UNIVERSE SCENARIO; FLATNESS; HORIZON;
D O I
10.1142/S0219887824502761
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
By taking into account the Einstein-Gauss-Bonnet dilaton-coupled interaction in the background of the Robertson-Walker metric, we provide some bouncing solutions of the early universe from analytic solutions of the field equations for vanishing three space curvature. For a few potentials, the solutions involving the slow-roll-type approximation produce results that are very same to those of the early era's bouncing solutions. Considering a different approach of slow-roll approximation, the universe goes through much faster initially than standard inflation, but at a later stage, the universe enters into standard exponential inflation.
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页数:14
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