Solution of a Braneworld Big Crunch/Big Bang Cosmology

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dc.creatorMcFadden, Paul
dc.creatorTurok, Neil
dc.creatorSteinhardt, Paul J.
dc.date2005-12-12
dc.date2006-01-08
dc.date.accessioned2026-07-07T11:27:20Z
dc.date.available2026-07-07T11:27:20Z
dc.descriptionWe solve for the cosmological perturbations in a five-dimensional background consisting of two separating or colliding boundary branes, as an expansion in the collision speed V divided by the speed of light c. Our solution permits a detailed check of the validity of four-dimensional effective theory in the vicinity of the event corresponding to the big crunch/big bang singularity. We show that the four-dimensional description fails at the first nontrivial order in (V/c)^2. At this order, there is nontrivial mixing of the two relevant four-dimensional perturbation modes (the growing and decaying modes) as the boundary branes move from the narrowly-separated limit described by Kaluza-Klein theory to the well-separated limit where gravity is confined to the positive-tension brane. We comment on the cosmological significance of the result and compute other quantities of interest in five-dimensional cosmological scenarios.
dc.description54 pages, 12 figures, URL updated & 3 references added
dc.identifierhttps://arxiv.org/abs/hep-th/0512123
dc.identifierhttp://arxiv.org/abs/hep-th/0512123
dc.identifierPhys.Rev.D76:104038,2007
dc.identifierdoi:10.1103/PhysRevD.76.104038
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/196118
dc.subjectHigh Energy Physics - Theory
dc.titleSolution of a Braneworld Big Crunch/Big Bang Cosmology
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