Bartolo, NicolaBellini, EmilioBertacca, DanieleMatarrese, Sabino2018-02-162018-02-162013Bartolo, N, et al. (2013). Matter bispectrum in cubic Galileon cosmologies. Journal of Cosmology and Astroparticle Physics, 341475-7516http://dx.doi.org/10.1088/1475-7516/2013/03/034http://hdl.handle.net/10566/3504In 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 in Galileon cosmologies, assuming Gaussian initial conditions. In particular, we show that, even in the presence of large deviations of the linear growth-rate w.r.t. the CDM one, at the bispectrum level such deviations are reduced to a few percent.enThis is the pre-print version (From arXiv:1301.4831) of the article published online at: http://dx.doi.org/10.1088/1475-7516/2013/03/034Modi ed gravityGalileonMatter BispectrumCosmological perturbationsArticle