Skewness as a probe of non-Gaussian initial conditions - art. no. 021301

We compute the skewness of the matter distribution arising from nonlinear e volution and from non-Gaussian initial perturbations. We apply our result t o a very generic class of models with non-Gaussian initial conditions and w e estimate analytically the ratio between the skewness due to nonlinear clu stering and the part due to the intrinsic non-Gaussianity of the models. We finally extend our estimates to higher moments.