Beyond the standard model of cosmology : a perturbative approach

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dc.contributor.advisorDunsby, Peter K Sen_ZA
dc.contributor.advisorClarkson, C Aen_ZA
dc.contributor.authorOsano, Bob Otienoen_ZA
dc.date.accessioned2014-07-31T08:10:19Z
dc.date.available2014-07-31T08:10:19Z
dc.date.issued2007en_ZA
dc.descriptionIncludes abstract.
dc.descriptionIncludes bibliographical references (p. 171-185).
dc.description.abstractThis thesis concerns higher order perturbations of the standard model of cosmology. The theme is addressed in two distinct research areas. The first area deals with linear perturbations of Bianchi type I model filled with dust whose flow is irrotational, and which is an analogue to second order perturbations about the standard model. We investigate both density perturbations and gravitational waves in the shear dominated and the matter dominated regimes. We find that whereas the analysis of the perturbations in the matter dominated regime recovers the standard FLRW results, the analysis of perturbations in the shear dominated regime reveals that density perturbations and gravitational waves decouple only when the background shear is locally rotational symmetric.en_ZA
dc.identifier.apacitationOsano, B. O. (2007). <i>Beyond the standard model of cosmology : a perturbative approach</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Mathematics and Applied Mathematics. Retrieved from http://hdl.handle.net/11427/4918en_ZA
dc.identifier.chicagocitationOsano, Bob Otieno. <i>"Beyond the standard model of cosmology : a perturbative approach."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Mathematics and Applied Mathematics, 2007. http://hdl.handle.net/11427/4918en_ZA
dc.identifier.citationOsano, B. 2007. Beyond the standard model of cosmology : a perturbative approach. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Osano, Bob Otieno AB - This thesis concerns higher order perturbations of the standard model of cosmology. The theme is addressed in two distinct research areas. The first area deals with linear perturbations of Bianchi type I model filled with dust whose flow is irrotational, and which is an analogue to second order perturbations about the standard model. We investigate both density perturbations and gravitational waves in the shear dominated and the matter dominated regimes. We find that whereas the analysis of the perturbations in the matter dominated regime recovers the standard FLRW results, the analysis of perturbations in the shear dominated regime reveals that density perturbations and gravitational waves decouple only when the background shear is locally rotational symmetric. DA - 2007 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2007 T1 - Beyond the standard model of cosmology : a perturbative approach TI - Beyond the standard model of cosmology : a perturbative approach UR - http://hdl.handle.net/11427/4918 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/4918
dc.identifier.vancouvercitationOsano BO. Beyond the standard model of cosmology : a perturbative approach. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Mathematics and Applied Mathematics, 2007 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/4918en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Mathematics and Applied Mathematicsen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherMathematics and Applied Mathematicsen_ZA
dc.titleBeyond the standard model of cosmology : a perturbative approachen_ZA
dc.typeDoctoral Thesis
dc.type.qualificationlevelDoctoral
dc.type.qualificationnamePhDen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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