Cosmological perfect fluids in Gauss-Bonnet gravity

被引：39
|
作者：
Capozziello, Salvatore [1 ,2 ,3 ]
Mantica, Carlo Alberto [4 ,5 ]
Molinari, Luca Guido [5 ,6 ]
机构：
[1] Univ Napoli Federico II, Dipartimento Fis E Pancini, Naples, Italy
[2] Compl Univ Monte S Angelo, Sez Napoli, Ist Nazl Fis Nucl, Edificio G Via Cinthia, I-80126 Naples, Italy
[3] Tomsk State Pedag Univ, Ul Kievskaya 60, Tomsk 634061, Russia
[4] IIS Lagrange, Via L Modignani 65, I-20161 Milan, Italy
[5] Ist Nazl Fis Nucl, Sez Milano, Via Celoria 16, I-20133 Milan, Italy
[6] Univ Milan, Dipartimento Fis A Pontremoli, Milan, Italy
来源：
INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS | 2019年 / 16卷 / 09期
关键词：
Cosmology; modified gravity; Gauss-Bonnet topological invariant; EXTENDED THEORIES; DARK ENERGY; INFLATION;
D O I：
10.1142/S0219887819501330
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In a n-dimensional Friedmann-Robertson-Walker metric, it is rigorously shown that any analytical theory of gravity f (R, g), where R is the curvature scalar and g is the Gauss-Bonnet topological invariant, can be associated to a perfect-fluid stress-energy tensor. In this perspective, dark components of the cosmological Hubble flow can be geometrically interpreted.
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页数：8
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