Scalar Tensor Cosmology With Kinetic, Gauss-Bonnet and Nonminimal Derivative Couplings and Supersymmetric Loop Corrected Potential

被引：8
作者：
El-Nabulsi, Rami Ahmad [1 ]
机构：
[1] Athens Inst Educ & Res, Math & Phys Div, 8 Valaoritou St, Athens 10671, Greece
来源：
COMMUNICATIONS IN THEORETICAL PHYSICS | 2019年 / 71卷 / 07期
关键词：
Scalar tensor cosmology; Gauss-Bonnet coupling; non-minimal derivative coupling; vacuum energy; DARK ENERGY; MODIFIED GRAVITY; INFLATION; POWER; DYNAMICS; UNIVERSE;
D O I：
10.1088/0253-6102/71/7/831
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We discuss a particular four-dimensional cosmology based on non-minimal scalar tensor theories characterized by a supersymmetric loop corrected potential and a Hubble parameter defined as a function of the scalar field. Power-law solutions are obtained in the FRW background giving rise to acceleratedly expanding universe characterized by a scale factor and a scalar field depending both on the non-minimal coupling parameter xi. Based on SNeIa data and on Hubble data X-ray gas mass fraction measurements, we find 0.116 < xi< 0.225 which results on a universe dominated by vacuum energy.
引用
收藏
页码：831 / 836
页数：6
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