Cosmological perfect fluids in Gauss-Bonnet gravity

被引：41

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.

引用

页数：8

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