Large-scale perturbations on the brane and the isotropy of the cosmological singularity

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dc.contributor.authorGoheer, Naureen
dc.contributor.authorDunsby, Peter K S
dc.contributor.authorColey, Alan
dc.contributor.authorBruni, Marco
dc.date.accessioned2021-10-08T07:11:30Z
dc.date.available2021-10-08T07:11:30Z
dc.date.issued2004
dc.description.abstractWe present the complete set of propagation and constraint equations for the kinematic and non-local first order quantities which describe general linear inhomogeneous and anisotropic perturbations of a flat FRW braneworld with vanishing cosmological constant and decompose them in the standard way into their scalar, vector and tensor contributions. A detailed analysis of the perturbation dynamics is performed using dimensionless variables that are specially tailored for the different regimes of interest; namely, the low energy GR regime, the high energy regime and the dark energy regime. Tables are presented for the evolution of all the physical quantities, making it easy to do a detailed comparison of the past asymptotic behaviour of the perturbations of these models. We find results that exactly match those obtained in the analysis of the spatially inhomogeneous $G_{2}$ braneworld cosmologies presented recently; i.e., that isotropization towards the ${cal F}_b$ model occurs for $gamma > 4/3$.
dc.identifier.apacitationGoheer, N., Dunsby, P. K. S., Coley, A., & Bruni, M. (2004). Large-scale perturbations on the brane and the isotropy of the cosmological singularity. <i>Physical Review D - Particles and Fields</i>, 70(12), 174 - 177. http://hdl.handle.net/11427/34627en_ZA
dc.identifier.chicagocitationGoheer, Naureen, Peter K S Dunsby, Alan Coley, and Marco Bruni "Large-scale perturbations on the brane and the isotropy of the cosmological singularity." <i>Physical Review D - Particles and Fields</i> 70, 12. (2004): 174 - 177. http://hdl.handle.net/11427/34627en_ZA
dc.identifier.citationGoheer, N., Dunsby, P.K.S., Coley, A. & Bruni, M. 2004. Large-scale perturbations on the brane and the isotropy of the cosmological singularity. <i>Physical Review D - Particles and Fields.</i> 70(12):174 - 177. http://hdl.handle.net/11427/34627en_ZA
dc.identifier.issn0556-2821
dc.identifier.issn1089-4918
dc.identifier.ris TY - Journal Article AU - Goheer, Naureen AU - Dunsby, Peter K S AU - Coley, Alan AU - Bruni, Marco AB - We present the complete set of propagation and constraint equations for the kinematic and non-local first order quantities which describe general linear inhomogeneous and anisotropic perturbations of a flat FRW braneworld with vanishing cosmological constant and decompose them in the standard way into their scalar, vector and tensor contributions. A detailed analysis of the perturbation dynamics is performed using dimensionless variables that are specially tailored for the different regimes of interest; namely, the low energy GR regime, the high energy regime and the dark energy regime. Tables are presented for the evolution of all the physical quantities, making it easy to do a detailed comparison of the past asymptotic behaviour of the perturbations of these models. We find results that exactly match those obtained in the analysis of the spatially inhomogeneous $G_{2}$ braneworld cosmologies presented recently; i.e., that isotropization towards the ${cal F}_b$ model occurs for $gamma > 4/3$. DA - 2004 DB - OpenUCT DP - University of Cape Town IS - 12 J1 - Physical Review D - Particles and Fields LK - https://open.uct.ac.za PY - 2004 SM - 0556-2821 SM - 1089-4918 T1 - Large-scale perturbations on the brane and the isotropy of the cosmological singularity TI - Large-scale perturbations on the brane and the isotropy of the cosmological singularity UR - http://hdl.handle.net/11427/34627 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/34627
dc.identifier.vancouvercitationGoheer N, Dunsby PKS, Coley A, Bruni M. Large-scale perturbations on the brane and the isotropy of the cosmological singularity. Physical Review D - Particles and Fields. 2004;70(12):174 - 177. http://hdl.handle.net/11427/34627.en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Mathematics and Applied Mathematics
dc.publisher.facultyFaculty of Science
dc.sourcePhysical Review D - Particles and Fields
dc.source.journalissue12
dc.source.journalvolume70
dc.source.pagination174 - 177
dc.source.urihttps://dx.doi.org/10.1103/PhysRevD.70.123517
dc.subject.otherphysics of elementary particles and fields
dc.subject.otheranisotropy
dc.subject.othercomparative evaluations
dc.subject.othercosmological constant
dc.subject.othercosmology
dc.subject.otherdisturbances
dc.subject.otherevolution
dc.subject.othergeneral relativity theory
dc.subject.otherisotropy
dc.subject.othermembranes
dc.subject.othernonluminous matter
dc.subject.otherquantum field theory
dc.subject.otherscalars
dc.subject.othersingularity
dc.subject.othervectors
dc.titleLarge-scale perturbations on the brane and the isotropy of the cosmological singularity
dc.typeJournal Article
uct.type.publicationResearch
uct.type.resourceJournal Article
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