Black hole formation and slow-roll inflation

Simple item page
dc.creatorKohri, Kazunori
dc.creatorLyth, David H.
dc.creatorMelchiorri, Alessandro
dc.date2007-11-30
dc.date2008-04-11
dc.date.accessioned2026-07-07T11:39:03Z
dc.date.available2026-07-07T11:39:03Z
dc.descriptionBlack hole formation may occur if the spectrum of the curvature perturbation ζincreases strongly as the scale decreases. As no such increase is observed on cosmological scales, black hole formation requires strongly positive running n' of the spectral index n, though the running might only kick in below the `cosmological scales' probed by the CMB anisotropy and galaxy surveys. A concrete and well-motivated way of producing this running is through the running mass model of slow roll inflation. We obtain a new observational bound n' < 0.026 on the running provided by this model, improving an earlier result by a factor two. We also discuss black hole production in more general scenarios. We show that the usual conditions ε<< 1 and |η| << 1 are enough to derive the spectrum {\cal P}_ζ(k), the introduction of higher order parameters ξ^{2} etc. being optional.
dc.description11 pages, 6 figures, version to apper in JCAP
dc.identifierhttps://arxiv.org/abs/0711.5006
dc.identifierhttp://arxiv.org/abs/0711.5006
dc.identifierJCAP0804:038,2008
dc.identifierdoi:10.1088/1475-7516/2008/04/038
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/199782
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Theory
dc.titleBlack hole formation and slow-roll inflation
dc.typetext

Files

Collections

arXiv