Inflation with Non-Minimal Coupling: Metric vs. Palatini Formulations

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dc.creatorBauer, Florian
dc.creatorDemir, Durmus A.
dc.date2008-03-18
dc.date2008-06-13
dc.date.accessioned2026-07-07T11:49:11Z
dc.date.available2026-07-07T11:49:11Z
dc.descriptionWe analyze non-minimally coupled scalar field theories in metric (second-order) and Palatini (first-order) formalisms in a comparative fashion. After contrasting them in a general setup, we specialize to inflation and find that the two formalisms differ in their predictions for various cosmological parameters. The main reason is that dependencies on the non-minimal coupling parameter are different in the two formalisms. For successful inflation, the Palatini approach prefers a much larger value for the non-minimal coupling parameter than the Metric approach. Unlike the Metric formalism, in Palatini, the inflaton stays well below the Planck scale whereby providing a natural inflationary epoch.
dc.description13 pages, reference added
dc.identifierhttps://arxiv.org/abs/0803.2664
dc.identifierhttp://arxiv.org/abs/0803.2664
dc.identifierPhys.Lett.B665:222-226,2008
dc.identifierdoi:10.1016/j.physletb.2008.06.014
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/203147
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Theory
dc.titleInflation with Non-Minimal Coupling: Metric vs. Palatini Formulations
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