Lorentz violation in brane cosmology, accelerated expansion and fundamental constants

Simple item page
dc.creatorAhmadi, F.
dc.creatorJalalzadeh, S.
dc.creatorSepangi, H. R.
dc.date2006-05-07
dc.date.accessioned2026-07-07T07:09:42Z
dc.date.available2026-07-07T07:09:42Z
dc.descriptionThe notion of Lorentz violation in four dimensions is extended to a 5-dimensional brane-world scenario by utilizing a dynamical vector field assumed to point in the bulk direction, with Lorentz invariance holding on the brane. The cosmological consequences of this theory consisting of the time variation in the gravitational coupling $G$ and cosmological term $Λ_4$ are explored. The brane evolution is addressed by studying the generalized Friedmann and Raychaudhuri equations. The behavior of the expansion scale factor is then considered for different possible scenarios where the bulk cosmological constant is zero, positive or negative.
dc.description14 pages, to appear in Class. Quantum Grav
dc.identifierhttps://arxiv.org/abs/gr-qc/0605038
dc.identifierhttp://arxiv.org/abs/gr-qc/0605038
dc.identifierClass.Quant.Grav. 23 (2006) 4069-4082
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/111167
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Theory
dc.titleLorentz violation in brane cosmology, accelerated expansion and fundamental constants
dc.typetext

Files

Collections

arXiv