Higher Order Slow-Roll Predictions for Inflation

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dc.creatorCasadio, R.
dc.creatorFinelli, F.
dc.creatorLuzzi, M.
dc.creatorVenturi, G.
dc.date2005-06-07
dc.date2005-11-09
dc.date.accessioned2026-07-07T11:43:00Z
dc.date.available2026-07-07T11:43:00Z
dc.descriptionWe study the WKB approximation beyond leading order for cosmological perturbations during inflation. To first order in the slow-roll parameters, we show that an improved WKB approximation leads to analytical results agreeing to within 0.1% with the standard slow-roll results. Moreover, the leading WKB approximation to second order in the slow-roll parameters leads to analytical predictions in qualitative agreement with those obtained by the Green's function method.
dc.descriptionReplaced to match published version
dc.identifierhttps://arxiv.org/abs/gr-qc/0506043
dc.identifierhttp://arxiv.org/abs/gr-qc/0506043
dc.identifierPhys.Lett.B625:1-6,2005
dc.identifierdoi:10.1016/j.physletb.2005.08.056
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201084
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Theory
dc.titleHigher Order Slow-Roll Predictions for Inflation
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