Energy conditions in modified f(G) gravity

被引：149

作者：

Bamba, Kazuharu ^{[1
]}

Ilyas, M. ^{[2
]}

Bhatti, M. Z. ^{[3
]}

Yousaf, Z. ^{[3
]}

机构：

[1] Fukushima Univ, Fac Symbiot Syst Sci, Div Human Support Syst, Fukushima 9601296, Japan

[2] Univ Punjab, Ctr High Energy Phys, Quaid I Azam Campus, Lahore 54590, Pakistan

[3] Univ Punjab, Dept Math, Quaid I Azam Campus, Lahore 54590, Pakistan

来源：

GENERAL RELATIVITY AND GRAVITATION | 2017年 / 49卷 / 08期

关键词：

Relativistic fluids; Modified gravity; Stability; F R; EXTENDED THEORIES; DARK ENERGY; CONSTRAINTS; EPOCH; INFLATION; EXPANSION; COSMOLOGY; EVOLUTION; HISTORY;

D O I：

10.1007/s10714-017-2276-x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this paper, we have considered flat Friedmann-Lemaitre-Robertson-Walker metric in the framework of perfect fluid models and modified f (G) gravity (where G is the Gauss Bonnet invariant). Particularly, we have considered particular realistic f (G) configurations that could be used to cure finite-time future singularities arising in the late-time cosmic accelerating epochs. We have then developed the viability bounds of these models induced by weak and null energy conditions, by using the recent estimated numerical figures of the deceleration, Hubble, snap and jerk parameters.

引用

页数：17

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