Cosmological perfect fluids in higher-order gravity

被引：36

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] Univ Monte S Angelo, Sez Napoli, Ist Nazl Fis Nucl, Edificio G,Via Cinthia, I-80126 Naples, Italy

[3] Tomsk State Univ Control Syst & Radioelect TUSUR, Lab Theoret Cosmol, Tomsk 634050, 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：

GENERAL RELATIVITY AND GRAVITATION | 2020年 / 52卷 / 04期

关键词：

Higher-order gravity; Cosmology; Perfect fluids; 6TH-ORDER GRAVITY; EXTENDED THEORIES; INFLATION; MODELS;

D O I：

10.1007/s10714-020-02690-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We prove that in Robertson-Walker space-times (and in generalized Robertson-Walker spacetimes of dimension greater than 3 with divergence-free Weyl tensor) all higher-order gravitational corrections of the Hilbert-Einstein Lagrangian density F(R, R, horizontal ellipsis, kR)\have the form of perfect fluids in the field equations. This statement definitively allows to deal with dark energy fluids as curvature effects.

引用

页数：9

共 28 条

[1] Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests [J].

Bamba, Kazuharu ;

Capozziello, Salvatore ;

Nojiri, Shin'ichi ;

Odintsov, Sergei D. .

ASTROPHYSICS AND SPACE SCIENCE, 2012, 342 (01) :155-228

[2] INFLATION AND THE CONFORMAL STRUCTURE OF HIGHER-ORDER GRAVITY THEORIES [J].

BARROW, JD ;

COTSAKIS, S .

PHYSICS LETTERS B, 1988, 214 (04) :515-521

[3]

Birrel N. D., 1982, Quantum Fields in Curved Space

[4]

Capozziello S, 2006, J COSMOL ASTROPART P

[5] Curvature quintessence [J].

Capozziello, S .

INTERNATIONAL JOURNAL OF MODERN PHYSICS D, 2002, 11 (04) :483-491

[6] Extended theories of gravity and their cosmological and astrophysical applications [J].

Capozziello, Salvatore ;

Francaviglia, Mauro .

GENERAL RELATIVITY AND GRAVITATION, 2008, 40 (2-3) :357-420

[7] Cosmological perfect fluids in Gauss-Bonnet gravity [J].

Capozziello, Salvatore ;

Mantica, Carlo Alberto ;

Molinari, Luca Guido .

INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS, 2019, 16 (09)

[8] Extended gravity cosmography [J].

Capozziello, Salvatore ;

D'Agostino, Rocco ;

Luongo, Orlando .

INTERNATIONAL JOURNAL OF MODERN PHYSICS D, 2019, 28 (10)

[9] Cosmological perfect-fluids in f(R) gravity [J].

Capozziello, Salvatore ;

Mantica, Carlo Alberto ;

Molinari, Luca Guido .

INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS, 2019, 16 (01)

[10] Extended Theories of Gravity [J].

Capozziello, Salvatore ;

De Laurentis, Mariafelicia .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2011, 509 (4-5) :167-320

← 1 2 3 →