FRW cosmology in F(R,T) gravity

FRW cosmology in F(R,T) gravity
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DOI:
10.1140/epjc/s10052-012-2203-y
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发表时间:
2012-06
期刊:
The European Physical Journal C
影响因子:
--
通讯作者:
R. Myrzakulov
R. Myrzakulov
中科院分区:
其他
文献类型:
--
作者:
R. Myrzakulov

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在本文中,我们考虑具有与度量相关的扭转的重力理论,即 F(R,T) 重力,其中 Ri 是曲率标量,T 是扭转标量。我们研究这种理论的几何根。我们特别从几何角度给出了模型的推导。然后我们提出具有两个任意函数的 F(R,T) 引力的更一般形式,并给出其一些特殊情况。特别地,通常的F(R)和F(T)引力理论是F(R,T)引力的特例。在宇宙学背景下,我们发现我们的新引力理论可以描述宇宙的加速膨胀。
In this paper, we consider a theory of gravity with a metric-dependent torsion namely theF(R,T) gravity, whereRis the curvature scalar andTis the torsion scalar. We study the geometric root of such theory. In particular we give the derivation of the model from the geometrical point of view. Then we present the more general form ofF(R,T) gravity with two arbitrary functions and give some of its particular cases. In particular, the usualF(R) andF(T) gravity theories are particular cases of theF(R,T) gravity. In the cosmological context, we find that our new gravitational theory can describe the accelerated expansion of the Universe.