Structure Formation in Modified Gravity Scenarios

@article{Brax2012StructureFI,
title={Structure Formation in Modified Gravity Scenarios},
author={Philippe Brax and Patrick Valageas},
journal={Physical Review D},
year={2012},
volume={86},
pages={063512}
}
• Published 30 May 2012
• Physics
• Physical Review D
We study the growth of structures in modified gravity models where the Poisson equation and the relationship between the two Newtonian potentials are modified by explicit functions of space and time. This parameterisation applies to the $f(R)$ models and more generally to screened modified gravity models. We investigate the linear and weakly nonlinear regimes using the "standard" perturbative approach and a resummation technique, while we use the spherical dynamics to go beyond low-order…
• Physics
• 2013
We study the effects of screened modified gravity of the $f(R)$, dilaton and symmetron types on structure formation, from the quasi-linear to the non-linear regime, using semi-analytical methods. For
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Journal of Cosmology and Astroparticle Physics
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These lecture notes introduce analytical tools, methods and results describing the growth of cosmological structure beyond the linear regime. The presentation is focused on the single flow regime of
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We investigate the impact of modified-gravity models on the Lyman-α power spectrum. Building a simple analytical modeling, based on a truncated Zeldovich approximation, we estimate the intergalactic
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Cosmological perturbation theory is a powerful tool to understanding the large-scale structure of the Universe. However, the set of field equations describes the general linear perturbations for the
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A unified framework for theories of modified gravity will be an essential tool for interpreting the forthcoming deluge of cosmological data. We present such a formalism, the Parameterized
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