Modeling Dark Sector in Horndeski Gravity at First-Order Formalism

被引：7
|
作者：
Santos, F. F. [1 ]
Neves, R. M. P. [1 ]
Brito, F. A. [1 ,2 ]
机构：
[1] Univ Fed Paraiba, Dept Fis, Caixa Postal 5008, BR-58051970 Joao Pessoa, Paraiba, Brazil
[2] Univ Fed Campina Grande, Dept Fis, Caixa Postal 10071, BR-58109970 Campina Grande, Paraiba, Brazil
来源：
ADVANCES IN HIGH ENERGY PHYSICS | 2019年 / 2019卷
关键词：
ENERGY;
D O I：
10.1155/2019/3486805
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：
We investigate a cosmological scenario by finding solutions using first-order formalism in the Horndeski gravity that constrains the superpotential and implies that no free choice of scalar potential is allowed. Despite this, we show that a de Sitter phase at late-time cosmology can be realized, where the dark energy sector can be identified. The scalar field equation of state tends to the cosmological scenario at present time and allows us to conclude that it can simulate the dark energy in the Horndeski gravity.
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页数：8
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