Boundary Effects in Local Inflation and Spectrum of Density Perturbations

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dc.creatorErtan, Erol
dc.creatorKaya, Ali
dc.date2007-04-18
dc.date2007-11-20
dc.date.accessioned2026-07-07T11:56:37Z
dc.date.available2026-07-07T11:56:37Z
dc.descriptionWe observe that when a local patch in a radiation filled Robertson-Walker universe inflates by some reason, outside perturbations can enter into the inflating region. Generally, the physical wavelengths of these perturbations become larger than the Hubble radius as they cross into the inflating space and their amplitudes freeze out immediately. It turns out that the corresponding power spectrum is not scale invariant. Although these perturbations cannot reach out to a distance inner observer shielded by a de Sitter horizon, they still indicate a curious boundary effect in local inflationary scenarios.
dc.description11 pages, 8 figures, revtex4, v4: minor typos corrected, twocolumn version
dc.identifierhttps://arxiv.org/abs/0704.2284
dc.identifierhttp://arxiv.org/abs/0704.2284
dc.identifierGen.Rel.Grav.40:1511,2008
dc.identifierdoi:10.1007/s10714-007-0544-x
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/205598
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Theory
dc.titleBoundary Effects in Local Inflation and Spectrum of Density Perturbations
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