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Beyond the standard model of cosmology : a perturbative approach
Includes abstract.
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Mathematics and Applied Mathematics
2014
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| _version_ | 1867613529251512320 |
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| access_status_str | Open Access |
| author | Osano, Bob Otieno |
| author2 | Dunsby, Peter K S |
| author_browse | Dunsby, Peter K S Osano, Bob Otieno |
| author_facet | Dunsby, Peter K S Osano, Bob Otieno |
| author_sort | Osano, Bob Otieno |
| collection | Thesis |
| description | Includes abstract. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/4918 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:37:35.820Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | Department of Mathematics and Applied Mathematics |
| publisherStr | Department of Mathematics and Applied Mathematics |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/4918 Beyond the standard model of cosmology : a perturbative approach Osano, Bob Otieno Dunsby, Peter K S Clarkson, C A Mathematics and Applied Mathematics Includes abstract. Includes bibliographical references (p. 171-185). 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. 2014-07-31T08:10:19Z 2014-07-31T08:10:19Z 2007 Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/4918 eng application/pdf Department of Mathematics and Applied Mathematics Faculty of Science University of Cape Town |
| spellingShingle | Mathematics and Applied Mathematics Osano, Bob Otieno Beyond the standard model of cosmology : a perturbative approach |
| thesis_degree_str | Doctoral |
| title | Beyond the standard model of cosmology : a perturbative approach |
| title_full | Beyond the standard model of cosmology : a perturbative approach |
| title_fullStr | Beyond the standard model of cosmology : a perturbative approach |
| title_full_unstemmed | Beyond the standard model of cosmology : a perturbative approach |
| title_short | Beyond the standard model of cosmology : a perturbative approach |
| title_sort | beyond the standard model of cosmology a perturbative approach |
| topic | Mathematics and Applied Mathematics |
| url | http://hdl.handle.net/11427/4918 |
| work_keys_str_mv | AT osanobobotieno beyondthestandardmodelofcosmologyaperturbativeapproach |