Quintessential inflation from 5D warped product spaces on a dynamical foliation

被引:4
|
作者
Da Silva, Lucio Fabio P. [1 ]
Madriz Aguilar, Jose Edgar [1 ]
机构
[1] Univ Fed Paraiba, Dept Fis, BR-58059970 Joao Pessoa, Paraiba, Brazil
关键词
warped product metrics; dynamical foliations; induced matter; induced scalar potentials; quintessential inflation;
D O I
10.1142/S0217732308025747
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Assuming the existence of a 5D purely kinetic scalar field on the class of warped product spaces we investigate the possibility of mimic both an inflationary and a quintessential scenarios on 4D hypersurfaces, by implementing a dynamical foliation on the fifth coordinate instead of a constant one. We obtain that an induced chaotic inflationary scenario with a geometrically induced scalar potential and an induced quasi-vacuum equation of state on 4D dynamical hypersurfaces is possible. While on a constant foliation, the universe can be considered as matter-dominated today, in a family of 4D dynamical hypersurfaces, the universe can be passing period of accelerated expansion with a deceleration parameter nearly -1. This effect of the dynamical foliation results negligible at the inflationary epoch allowing for a chaotic inflationary scenario and becomes considerable at the present epoch allowing a quintessential scenario.
引用
收藏
页码:1213 / 1221
页数:9
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