Characterizing Inflationary Perturbations: The Uniform Approximation

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dc.creatorHabib, Salman
dc.creatorHeinen, Andreas
dc.creatorHeitmann, Katrin
dc.creatorJungman, Gerard
dc.creatorMolina-Paris, Carmen
dc.date2004-06-04
dc.date.accessioned2026-07-07T11:42:21Z
dc.date.available2026-07-07T11:42:21Z
dc.descriptionThe spectrum of primordial fluctuations from inflation can be obtained using a mathematically controlled, and systematically extendable, uniform approximation. Closed-form expressions for power spectra and spectral indices may be found without making explicit slow-roll assumptions. Here we provide details of our previous calculations, extend the results beyond leading order in the approximation, and derive general error bounds for power spectra and spectral indices. Already at next-to-leading order, the errors in calculating the power spectrum are less than a per cent. This meets the accuracy requirement for interpreting next-generation CMB observations.
dc.description17 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/astro-ph/0406134
dc.identifierhttp://arxiv.org/abs/astro-ph/0406134
dc.identifierPhys.Rev.D70:083507,2004
dc.identifierdoi:10.1103/PhysRevD.70.083507
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200856
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleCharacterizing Inflationary Perturbations: The Uniform Approximation
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