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Constraints on f(R) gravity from probing the large-scale structure

Title
Constraints on f(R) gravity from probing the large-scale structure
Authors
Lombriser L.Slosar A.Seljak U.Hu W.
Ewha Authors
Uros Seljak
Issue Date
2012
Journal Title
Physical Review D - Particles, Fields, Gravitation and Cosmology
ISSN
1550-7998JCR Link
Citation
vol. 85, no. 12
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
We study cosmological constraints on metric f(R) gravity models that are designed to reproduce the ΛCDM 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<1.1×10 -3 at the 95% C.L. © 2012 American Physical Society.
DOI
10.1103/PhysRevD.85.124038
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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