The growth factor of matter perturbations in f(R) gravity

The growth of matter perturbations in the f ( R ) model proposed by Starobinsky is studied in this paper. Three different parametric forms of the growth index are considered respectively, and constraints on the model are obtained at both the 1 σ and 2 σ confidence levels, by using the current observ...

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Bibliographic Details
Published inThe European physical journal. C, Particles and fields Vol. 68; no. 1-2; pp. 271 - 276
Main Authors Fu, Xiangyun, Wu, Puxun, Yu, Hongwei
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer-Verlag 01.07.2010
Springer
Springer Nature B.V
Subjects
Astronomy
Astrophysics and Cosmology
Confidence intervals
Constraint modelling
Elementary Particles
Exact sciences and technology
Growth factors
Hadrons
Heavy Ions
Measurement Science and Instrumentation
Nuclear Energy
Nuclear Physics
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Regular Article - Theoretical Physics
String Theory
The physics of elementary particles and fields
Starobinsky Model
Accelerate Expansion
Dark Energy
Growth Index
Matter Perturbation
Models
Mathematical physics
Elementary particles
Disturbances
Gravity
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Summary:The growth of matter perturbations in the f ( R ) model proposed by Starobinsky is studied in this paper. Three different parametric forms of the growth index are considered respectively, and constraints on the model are obtained at both the 1 σ and 2 σ confidence levels, by using the current observational data for the growth factor. It is found, for all the three parametric forms of the growth index examined, that the Starobinsky model is consistent with the observations only at the 2 σ confidence level.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-010-1324-4