Non-Gaussianity from Broken Symmetries

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dc.creatorKolb, Edward W.
dc.creatorRiotto, Antonio
dc.creatorVallinotto, Alberto
dc.date2005-11-07
dc.date.accessioned2026-07-07T11:24:56Z
dc.date.available2026-07-07T11:24:56Z
dc.descriptionRecently we studied inflation models in which the inflaton potential is characterized by an underlying approximate global symmetry. In the first work we pointed out that in such a model curvature perturbations are generated after the end of the slow-roll phase of inflation. In this work we develop further the observational implications of the model and compute the degree of non-Gaussianity predicted in the scenario. We find that the corresponding nonlinearity parameter, $f_{NL}$, can be as large as 10^2.
dc.description7 pages, 1 figure
dc.identifierhttps://arxiv.org/abs/astro-ph/0511198
dc.identifierhttp://arxiv.org/abs/astro-ph/0511198
dc.identifierPhys.Rev.D73:023522,2006
dc.identifierdoi:10.1103/PhysRevD.73.023522
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/195362
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.titleNon-Gaussianity from Broken Symmetries
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