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Collective effects in multi-field inflation
We present a new model of multi-field inflation in the limit when, N, the number of fields is very large. To implement this limit, we reformulate the problem in terms of a colourless bilocal field [(x; y) which encodes the collective degrees of freedom of the N scalar fields. As a concrete example,...
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| Format: | Thesis |
| Language: | English |
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Department of Mathematics and Applied Mathematics
2014
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| _version_ | 1867613327806431232 |
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| access_status_str | Open Access |
| author | Hassan, Sultan |
| author2 | Murugan, Jeffrey |
| author_browse | Hassan, Sultan Murugan, Jeffrey |
| author_facet | Murugan, Jeffrey Hassan, Sultan |
| author_sort | Hassan, Sultan |
| collection | Thesis |
| description | We present a new model of multi-field inflation in the limit when, N, the number of fields is very large. To implement this limit, we reformulate the problem in terms of a colourless bilocal field [(x; y) which encodes the collective degrees of freedom of the N scalar fields. As a concrete example, we apply the collective field theory formalism to the bosonic O(N) vector model with quartic self interaction minimally coupled to gravity and show how this may be used to model the quantum to classical transition out of inflation. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/6618 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:34:23.309Z |
| 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:11427/6618 Collective effects in multi-field inflation Hassan, Sultan Murugan, Jeffrey Weltman, Amanda We present a new model of multi-field inflation in the limit when, N, the number of fields is very large. To implement this limit, we reformulate the problem in terms of a colourless bilocal field [(x; y) which encodes the collective degrees of freedom of the N scalar fields. As a concrete example, we apply the collective field theory formalism to the bosonic O(N) vector model with quartic self interaction minimally coupled to gravity and show how this may be used to model the quantum to classical transition out of inflation. 2014-08-20T19:14:32Z 2014-08-20T19:14:32Z 2013 Master Thesis Masters MSc http://hdl.handle.net/11427/6618 eng application/pdf Department of Mathematics and Applied Mathematics Faculty of Science University of Cape Town |
| spellingShingle | Hassan, Sultan Collective effects in multi-field inflation |
| thesis_degree_str | Master's |
| title | Collective effects in multi-field inflation |
| title_full | Collective effects in multi-field inflation |
| title_fullStr | Collective effects in multi-field inflation |
| title_full_unstemmed | Collective effects in multi-field inflation |
| title_short | Collective effects in multi-field inflation |
| title_sort | collective effects in multi field inflation |
| url | http://hdl.handle.net/11427/6618 |
| work_keys_str_mv | AT hassansultan collectiveeffectsinmultifieldinflation |