Energy conditions and stability in f(R) theories of gravity with nonminimal coupling to matter

被引:156
作者
Bertolami, Orfeu [1 ,2 ]
Sequeira, Miguel Carvalho [1 ]
机构
[1] Univ Tecn Lisboa, Dept Fis, Inst Super Tecn, P-1049001 Lisbon, Portugal
[2] Univ Tecn Lisboa, Inst Plasmas & Fusao Nucl, Inst Super Tecn, P-1049001 Lisbon, Portugal
来源
PHYSICAL REVIEW D | 2009年 / 79卷 / 10期
关键词
DARK ENERGY;
D O I
10.1103/PhysRevD.79.104010
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Recently, in the context of f(R) modified theories of gravity, a new type of model has been proposed where one directly couples the scalar curvature to matter. As any model in f(R) theory, there are certain conditions which have to be satisfied in order to ensure that the model is viable and physically meaningful. In this paper, one considers this new class of models with curvature-matter coupling and study them from the point of view of the energy conditions and of their stability under the Dolgov-Kawasaki criterion.
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页数:6
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共 20 条
[11]   Modified gravity with negative and positive powers of curvature: Unification of inflation and cosmic acceleration [J].
Nojiri, S ;
Odintsov, SD .
PHYSICAL REVIEW D, 2003, 68 (12)
[12]  
Nojiri S., ARXIVHEPTH0601213
[13]  
Nojiri S, 2006, ECONF C
[14]   Introduction to modified gravity and gravitational alternative for dark energy [J].
Nojiri, Shin'ichi ;
Odintsov, Sergei D. .
INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS, 2007, 4 (01) :115-145
[15]   Constraining f(R) theories with the energy conditions [J].
Perez Bergliaffa, S. E. .
PHYSICS LETTERS B, 2006, 642 (04) :311-314
[16]   Motion of test bodies in theories with nonminimal coupling [J].
Puetzfeld, Dirk ;
Obukhov, Yuri N. .
PHYSICAL REVIEW D, 2008, 78 (12)
[17]   Energy conditions in f(R) gravity [J].
Santos, J. ;
Alcaniz, J. S. ;
Reboucas, M. J. ;
Carvalho, F. C. .
PHYSICAL REVIEW D, 2007, 76 (08)
[18]   The viability of theories with matter coupled to the Ricci scalar [J].
Sotiriou, Thomas P. .
PHYSICS LETTERS B, 2008, 664 (4-5) :225-228
[19]   Modified gravity with R-matter couplings and (non-)geodesic motion [J].
Sotiriou, Thomas P. ;
Faraoni, Valerio .
CLASSICAL AND QUANTUM GRAVITY, 2008, 25 (20)
[20]  
SOTIRIOU TP, ARXIV08051726