Power-law solutions in f (T) gravity

被引：41
|
作者：
Setare, M. R. [2 ]
Darabi, F. [1 ,3 ]
机构：
[1] Azarbaijan Shahid Madani Univ, Dept Phys, Tabriz 53714161, Iran
[2] Payame Noor Univ, Dept Sci, Bijar, Iran
[3] RIAAM, Maragha 55134441, Iran
来源：
GENERAL RELATIVITY AND GRAVITATION | 2012年 / 44卷 / 10期
关键词：
Power-law; f(T) gravity; Phantom phase; DARK ENERGY; COSMOLOGICAL CONSEQUENCES; QUINTOM MODEL; PHANTOM;
D O I：
10.1007/s10714-012-1408-6
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We have considered an action of the form T + f (T) + L (m) describing Einstein's gravity plus a function of the torsion scalar. By considering an exact power-law solution we have obtained the Friedmann equation as a differential equation for the function f (T) in spatially flat universe and obtained the real valued solutions of this equation for some power-law solutions. We have also studied the power-law solutions when the universe enters a Phantom phase and shown that such solutions may exist for some f (T) solutions.
引用
收藏
页码：2521 / 2527
页数：7
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