MG12 - Talk detail |
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Participant |
Moraes, Bruno | |
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Institution |
LPTA - UMR 5207 - UM2/IN2P3/CNRS - BAT 13 - CC 070 - Place Eugène Bataillon - Montpellier - - France | |
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Session |
Talk |
Abstract |
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COM2 |
The growth of matter perturbations in f(R) models |
This work considers the growth of matter perturbations in some f(R) models, showing that they present an observational signature which allows us to distinguish them from $\Lambda CDM$, via the values of the growth parameter $\gamma_0$ and its derivative $\gamma_0'$. It also discusses some issues on the definition of energy densities in these models and on the scale-dependance of the effective Newton's constant, as well as experimental bounds on the models' parameters. |