Impact of general reionization scenarios on extraction of inflationary parameters
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Impact of general reionization scenarios on extraction of inflationary parameters

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Impact of general reionization scenarios on extraction of inflationary parameters

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Pandolfi, Stefania; Giusarma, Elena; Kolb, Edward W.; Lattanzi, Massimiliano; Melchiorri, Alessandro; Mena Requejo, Olga; Peña Jiménez, Manuel; Cooray, Asantha; Serra, Paolo
This document is a artículoDate2010

Este documento está disponible también en : http://hdl.handle.net/10550/37756
Determination of whether the Harrison--Zel'dovich spectrum for primordial scalar perturbations is consistent with observations is sensitive to assumptions about the reionization scenario. In light of this result, we revisit constraints on inflationary models using more general reionization scenarios. While the bounds on the tensor-to-scalar ratio are largely unmodified, when different reionization schemes are addressed, hybrid models are back into the inflationary game. In the general reionization picture, we reconstruct both the shape and amplitude of the inflaton potential. We find a broader spectrum of potential shapes when relaxing the simple reionization restriction. An upper limit of 1016 GeV to the amplitude of the potential is found, regardless of the assumptions on the reionization history.

    Pandolfi, Stefania Giusarma, Elena Kolb, Edward W. Lattanzi, Massimiliano Melchiorri, Alessandro Mena Requejo, Olga Peña Jiménez, Manuel Cooray, Asantha Serra, Paolo 2010 Impact of general reionization scenarios on extraction of inflationary parameters Physical Review D

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