Inflationary dynamics in f(G) gravity

被引：6
作者：
Sharif, M. [1 ]
Ikram, Ayesha [1 ]
机构：
[1] Univ Punjab, Dept Math, Quaid E Azam Campus, Lahore 54590, Pakistan
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 2017年 / 26卷 / 04期
关键词：
Inflation; slow-roll approximation; f(G) gravity; CHAOTIC INFLATION; COSMOLOGY; UNIVERSE; VACUUM;
D O I：
10.1142/S0218271817500304
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
This paper investigates inflationary dynamics for isotropic and homogeneous universe model in the background of f(G) gravity. We construct Hubble-flow functions, slow-roll parameters, amplitude of scalar power spectrum, spectral index and tensor-scalar ratio for a particular form of equation of state which describes quasi-de Sitter expansion. The dynamics of inflationary epoch is analyzed for scalar field as well as fluid cosmology with viable power-law f(G) model. We obtain different potential functions that correspond to chaotic inflation and Starobinsky type models. The graphical behavior of these parameters shows compatible results with observational Planck 2015 data in this gravity.
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页数：22
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