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Clustering of quintessence on horizon scales and its imprint on HI intensity mapping
(IOP Science, 2013)
Quintessence can cluster only on horizon scales. What is the effect on the observed matter distribution? To answer this, we need a relativistic approach that goes beyond the standard Newtonian
calculation and deals properly ...
Testing gravity using large-scale redshift-space distortions
(Oxford University Press, 2013)
We use luminous red galaxies from the Sloan Digital Sky Survey (SDSS) II to test
the cosmological structure growth in two alternatives to the standard cold dark matter
( CDM)+general relativity (GR) cosmological model. ...
Matter bispectrum in cubic Galileon cosmologies
(IOP Science, 2013)
In this paper we obtain the bispectrum of dark matter density perturbations in
the frame of covariant cubic Galileon theories. This result is obtained by means of a semi-
analytic approach to second-order perturbations ...