Coleman-Weinberg inflation in light of Planck
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Coleman-Weinberg inflation in light of Planck

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Coleman-Weinberg inflation in light of Planck

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dc.contributor.author Barenboim Szuchman, Gabriela Alejandra
dc.contributor.author Chun, Eung Jin
dc.contributor.author Lee, Hyun Min
dc.date.accessioned 2014-09-19T10:50:42Z
dc.date.available 2014-09-19T10:50:42Z
dc.date.issued 2014
dc.identifier.uri http://hdl.handle.net/10550/38925
dc.description.abstract We revisit a single field inflationary model based on Coleman-Weinberg potentials. We show that in small field Coleman-Weinberg inflation, the observed amplitude of perturbations needs an extremely small quartic coupling of the inflaton, which might be a signature of radiative origin. However, the spectral index obtained in a standard cosmological scenario turns out to be outside the 2 sigma region of the Planck data. When a non-standard cosmological framework is invoked, such as brane-world cosmology in the Randall-Sundrum model, the spectral index can be made consistent with Planck data within 1 sigma, courtesy of the modification in the evolution of the Hubble parameter in such a scheme. We also show that the required inflaton quartic coupling as well as a phenomenologically viable B-L symmetry breaking together with a natural electroweak symmetry breaking can arise dynamically in a generalized B-L extension of the Standard Model where the full potential is assumed to vanish at a high scale.
dc.language.iso eng
dc.relation.ispartof Physics Letters B, 2014, vol. 730, p. 81-88
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Barenboim Szuchman, Gabriela Alejandra Chun, Eung Jin Lee, Hyun Min 2014 Coleman-Weinberg inflation in light of Planck Physics Letters B 730 81 88
dc.subject Física
dc.title Coleman-Weinberg inflation in light of Planck
dc.type info:eu-repo/semantics/article
dc.date.updated 2014-09-19T10:50:42Z
dc.identifier.doi http://dx.doi.org/10.1016/j.physletb.2014.01.039
dc.identifier.idgrec 092999

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