f(R) and f(T) theories of modified gravity

被引：46
|
作者：
Ferraro, Rafael [1 ]
机构：
[1] Inst Astron & Fis Espacio, RA-1428 Buenos Aires, DF, Argentina
来源：
I COSMOSUL: COSMOLOGY AND GRAVITATION IN THE SOUTHERN CONE | 2012年 / 1471卷
关键词：
Modified gravity; f(R) theories; f(T) theories; PALATINI; MODELS; DYNAMICS; TENSOR;
D O I：
10.1063/1.4756821
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We briefly review f(R) theories, both in the metric and Palatini formulations, their scalar-tensor representations and the chameleon mechanism that could explain the absence of perceptible consequences in the Solar System. We also review f(T) theories, a different approach to modified gravity consisting in a deformation of the teleparallel equivalent of General Relativity. We show some applications to cosmology and cosmic strings. As f(R)'s, f(T) theories are not exempted from additional degrees of freedom; we also discuss this still open issue.
引用
收藏
页码：103 / 110
页数：8
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