Primordial non-gaussianities from multiple-field inflation

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dc.creatorSeery, David
dc.creatorLidsey, James E.
dc.date2005-06-02
dc.date2005-09-21
dc.date.accessioned2026-07-07T10:43:14Z
dc.date.available2026-07-07T10:43:14Z
dc.descriptionWe calculate the three-point correlation function evaluated at horizon crossing for a set of interacting scalar fields coupled to gravity during inflation. This provides the initial condition for the three-point function of the curvature perturbation in the Sasaki--Stewart δN formulation. We find that the effect is small, of the order of a slow-roll parameter, and that the non-gaussianity can be determined on large scales once the unperturbed background evolution is known. As an example of the use of our formalism, we calculate the primordial non-gaussianity arising in a model of assisted inflation.
dc.description24 pages, JCAP LaTeX style; replaced with version accepted by JCAP. Some corrections to Sections 2 and 5, conclusions unchanged
dc.identifierhttps://arxiv.org/abs/astro-ph/0506056
dc.identifierhttp://arxiv.org/abs/astro-ph/0506056
dc.identifierJCAP0509:011,2005
dc.identifierdoi:10.1088/1475-7516/2005/09/011
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/182170
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Theory
dc.titlePrimordial non-gaussianities from multiple-field inflation
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