# A cosmological exclusion plot: towards model-independent constraints on modified gravity from current and future growth rate data

@article{Taddei2014ACE, title={A cosmological exclusion plot: towards model-independent constraints on modified gravity from current and future growth rate data}, author={Laura Taddei and Luca Amendola}, journal={Journal of Cosmology and Astroparticle Physics}, year={2014}, volume={2015}, pages={001 - 001} }

Most cosmological constraints on modified gravity are obtained assuming that the cosmic evolution was standard ΛCDM in the past and that the present matter density and power spectrum normalization are the same as in a ΛCDM model. Here we examine how the constraints change when these assumptions are lifted. We focus in particular on the parameter Y (also called Geff) that quantifies the deviation from the Poisson equation. This parameter can be estimated by comparing with the model-independent…

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## References

SHOWING 1-10 OF 67 REFERENCES

### Probing non-standard gravity with the growth index: a background independent analysis

- Physics
- 2014

Measurements of the growth index of linear matter density fluctuations γ(z) provide a clue as to whether Einstein's field equations encompass gravity also on large cosmic scales, those where the…

### Model-independent constraints on the cosmological anisotropic stress

- Physics
- 2014

= / is a key variable in the characterisation of the physical origin of the dark energy, as it allows to test for a non-minimal coupling of the dark sector to gravity in the Jordan frame. It is…

### Precision growth index using the clustering of cosmic structures and growth data

- Physics
- 2014

We use the clustering properties of Luminous Red Galaxies (LRGs) and the growth rate data provided by the various galaxy surveys in order to constrain the growth index γ) of the linear matter…

### Constraints on modified gravity from the observed X-ray luminosity function of galaxy clusters

- Physics
- 2009

We use measurements of the growth of cosmic structure, as inferred from the observed evolution of the X-ray luminosity function (XLF) of galaxy clusters, to constrain departures from General…

### The growth factor parameterization and modified gravity

- Physics
- 2008

The growth rate of matter perturbation and the expansion rate of the Universe can be used to distinguish modified gravity and dark energy model in explaining the cosmic acceleration. The growth rate…

### Observables and unobservables in dark energy cosmologies

- Physics
- 2013

The aim of this paper is to answer the following two questions: (1) Given cosmological observations of the expansion history and linear perturbations in a range of redshifts and scales as precise as…

### THE GROWTH RATE OF COSMIC STRUCTURE FROM PECULIAR VELOCITIES AT LOW AND HIGH REDSHIFTS

- Physics
- 2012

Peculiar velocities are an important probe of the growth rate of mass density fluctuations in the universe. Most previous studies have focused exclusively on measuring peculiar velocities at…

### Testing cosmological structure formation using redshift-space distortions

- Physics
- 2008

Observations of redshift-space distortions in spectroscopic galaxy surveys offer an attractive method for observing the build-up of cosmological structure. In this paper, we develop and test a new…

### The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Measuring growth rate and geometry with anisotropic clustering

- Physics
- 2014

We use the observed anisotropic clustering of galaxies in the Baryon Oscillation Spectroscopic Survey Data Release 11 CMASS sample to measure the linear growth rate of structure, the Hubble expansion…