Brane-world inflation: slow-roll corrections to the spectral index

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dc.creatorKoyama, Kazuya
dc.creatorMennim, Andrew
dc.creatorWands, David
dc.date2007-09-03
dc.date.accessioned2026-07-07T11:53:04Z
dc.date.available2026-07-07T11:53:04Z
dc.descriptionWe quantify the slow-roll corrections to primordial density perturbations arising from inflation driven by a four-dimensional scalar field with a monomial potential in a five-dimensional non-compact bulk spacetime. Although the difference between the classical brane-world solutions and standard four-dimensional solutions is large at early times, the change to the amplitude at late times of perturbations generated from quantum fluctuations is first-order in slow-roll parameters, leading to second-order slow-roll corrections to the spectral index. This confirms that the leading-order effects are correctly given by previous work in the literature.
dc.description6 pages, 1 figure
dc.identifierhttps://arxiv.org/abs/0709.0294
dc.identifierhttp://arxiv.org/abs/0709.0294
dc.identifierPhys.Rev.D77:021501,2008
dc.identifierdoi:10.1103/PhysRevD.77.021501
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/204407
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Theory
dc.titleBrane-world inflation: slow-roll corrections to the spectral index
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