f(R) gravity with torsion:: the metric-affine approach

被引：91
作者：
Capozziello, S.
Cianci, R.
Stornaiolo, C.
Vignolo, S.
机构：
[1] Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy
[2] Compl Univ Monte S Angelo Ed, Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy
[3] Univ Genoa, DIPTEM, Sez Metod & Modell Math, I-16129 Genoa, Italy
来源：
CLASSICAL AND QUANTUM GRAVITY | 2007年 / 24卷 / 24期
关键词：
D O I：
10.1088/0264-9381/24/24/015
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The role of torsion in f (R) gravity is considered in the framework of metric-affine formalism. We discuss the field equations in empty space and in the presence of perfect fluid matter, taking into account the analogy with the Palatini formalism. As a result, the extra curvature and torsion degrees of freedom can be dealt as an effective scalar field of a fully geometric origin. From a cosmological point of view, such a geometric description could account for the whole dark side of the universe.
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收藏
页码：6417 / 6430
页数：14
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