Large scale structure of f(R) gravity

By Yong Song, Wayne Hu, I. Sawicki. 2006

438 citations recorded by the source corpus.

We study the evolution of linear cosmological perturbations in f(R) models of accelerated expansion in the physical frame where the gravitational dynamics are fourth order and the matter is minimally coupled. These models predict a rich and testable set of linear phenomena. For each expansion history, fixed empirically by cosmological distance measures, there exists two branches of f(R) solutions that are parametrized by B{proportional_to}d{sup 2}f/dR{sup 2}. For B 0 branch, f(R) models can reduce the large-angle CMB anisotropy, alter the shape of the linear matter power spectrum, and qualitatively change the correlations between the CMB and galaxy surveys. All of these phenomena are accessible with current and future data and provide stringent tests of general relativity on cosmological scales.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/48b6d9a3ba5f0473b470ca07e26bfca7efa4cc89

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Citations in the corpus

A Bird's Eye View of f (R)-Gravity (2009, background): “In [100] the stability condition 0 > ) (R f ! !”
Observational probes of cosmic acceleration (2012, background): “For example, modified gravity theories can mimic the effect of any particular equation of state evolution on the Hubble expansion rate and the distance-redshift relation while altering the rate of growth of large-scale structure (e.g., Lue et al. 2004; Song et al. 2007).”
FIVE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE OBSERVATIONS: COSMOLOGICAL INTERPRETATION (2008, neutral): “…et al. 2007; Linder & Cahn 2007; Upadhye 2007; Zhang et al. 2007; Yamamoto et al. 2007; Chiba & Takahashi 2007; Bean et al. 2007; Hu & Sawicki 2007; Song et al. 2007; Daniel et al. 2008; Jain & Zhang 2007; Bertschinger & Zukin 2008; Amin et al. 2007; Hu 2008), as well as for determining the mass…”
SEVEN-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE (WMAP) OBSERVATIONS: COSMOLOGICAL INTERPRETATION (2010, background): “…et al. 2007; Linder & Cahn 2007; Upadhye 2007; Zhang et al. 2007; Yamamoto et al. 2007; Chiba & Takahashi 2007; Bean et al. 2007; Hu & Sawicki 2007; Song et al. 2007; Starobinsky 2007; Daniel et al. 2008; Jain & Zhang 2008; Bertschinger & Zukin 2008; Amin et al. 2008; Hu 2008) and determine the…”