Abstract

VALENZUELA-TOLEDO, César A.  and  RODRIGUEZ, Yeinzon. ANISOTROPÍA ESTADÍSTICA, NO GAUSSIANIDAD, Y PERTURBACIONES EN CAMPOS VECTORIALES. Rev. acad. colomb. cienc. exact. fis. nat. [online]. 2011, vol.35, n.135, pp.175-187. ISSN 0370-3908.

We study the statistical descriptors (the leve! of statistical anisotropy and the levels of nongaussianity) of the primordial curvature perturbation for cosmological inftationary models that include scalar fields as well as vector fields, the Iatter being proposed to include violations of the statistical isotropy. It is found for these models that it is possible to obtain consistency relations among the statistical descriptors, which possess an observational counterpart and that therefore allow us to keep or reject a theoretical model. Finally, we show that the obtained results agree with the most recent observational data. As a byproduct of this study, we present in this paper the definition of the true cosmological principie.

Keywords : Cosmology; Statistical anisotropy; Non-gaussianity; Primordial curvature perturbation.

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