Linear growth in power law f(T) gravity

被引：49

作者：

Basilakos, Spyros ^{[1
]}

机构：

[1] Acad Athens, Res Ctr Astron & Appl Math, Soranou Efesiou 4, Athens 11527, Greece

来源：

PHYSICAL REVIEW D | 2016年 / 93卷 / 08期

关键词：

DARK-ENERGY CONSTRAINTS; INDEX; MODEL;

D O I：

10.1103/PhysRevD.93.083007

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We provide for the first time the growth index of linear matter fluctuations of the power law f (T) proportional to (-T)(b) gravity model. We find that the asymptotic form of this particular f (T) model is gamma approximate to 6/11-6b, which obviously extends that of the ACDM model, gamma(A) approximate to 6/11. Finally, we generalize the growth index analysis of f (T) gravity in the case where gamma is allowed to vary with redshift.

引用

页数：8

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