Scalar perturbations in Randall-Sundrum braneworld cosmology

Simple item page
dc.creatorCardoso, Antonio
dc.date2007-10-24
dc.date.accessioned2026-07-07T12:57:54Z
dc.date.available2026-07-07T12:57:54Z
dc.descriptionWe study the evolution of scalar perturbations in the radiation-dominated era of Randall-Sundrum braneworld cosmology by numerically solving the coupled bulk and brane master wave equations. We find that density perturbations with wavelengths less than a critical value (set by the bulk curvature length) are amplified during horizon re-entry. Conversely, we explicitly confirm from simulations that the spectrum is identical to GR on large scales. Although this magnification is not relevant for the cosmic microwave background or measurements of large scale structure, it may have some bearing on the formation of primordial black holes in Randall-Sundrum models.
dc.description5 pages, 2 figures. Talk given at the Cargese Summer School: Cosmology and Particle Physics Beyond the Standard Models
dc.identifierhttps://arxiv.org/abs/0710.4507
dc.identifierhttp://arxiv.org/abs/0710.4507
dc.identifierPoS Cargese2007:019,2007
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/225067
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Theory
dc.titleScalar perturbations in Randall-Sundrum braneworld cosmology
dc.typetext

Files

Collections

arXiv