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Constraints on f(R) gravity from probing the large-scale structure
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Constraints on f(R) gravity from probing the large-scale structure
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We study cosmological constraints on metric f(R) gravity models that are designed to reproduce the LCDM expansion history with modifications to gravity described by a supplementary cosmological freedom, the Compton wavelength parameter B_0. We conduct a Markov chain Monte Carlo analysis on the parameter space, utilizing the geometrical constraints from supernovae distances, the baryon acoustic oscillation distances, and the Hubble constant, along with all of the cosmic microwave background data, including the largest scales, its correlation with galaxies, and a probe of the relation between weak gravitational lensing and galaxy flows. The strongest constraints, however, are obtained through the inclusion of data from cluster abundance. Using all of the data, we infer a bound of B_0<0.0011 at the 95% C.L.
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Cited by 1 Pith paper
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Forecast on $f(R)$ Gravity with HI 21cm Intensity Mapping Surveys
Fisher forecasts show BINGO and SKA1-MID 21-cm intensity mapping, combined with Planck priors, could constrain the f(R) gravity parameter B0 down to ~10⁻⁶–10⁻⁸.
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