The Dynamics of coset dimensional reduction
The evolution of multiple scalar fields in cosmology has been much studied, particularly when the potential is formed from a series of exponentials. For a certain subclass of such systems it is possible to get `assisted` behaviour, where the presence of multiple terms in the potential effectively ma...
| Main Authors: | , |
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| Format: | Article |
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American Physical Society
2006
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| Online Access: | https://eprints.nottingham.ac.uk/42111/ |
| _version_ | 1848796421626527744 |
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| author | Karthauser, Josef L.P. Saffin, Paul M. |
| author_facet | Karthauser, Josef L.P. Saffin, Paul M. |
| author_sort | Karthauser, Josef L.P. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The evolution of multiple scalar fields in cosmology has been much studied, particularly when the potential is formed from a series of exponentials. For a certain subclass of such systems it is possible to get `assisted` behaviour, where the presence of multiple terms in the potential effectively makes it shallower than the individual terms indicate. It is also known that when compactifying on coset spaces one can achieve a consistent truncation to an effective theory which contains many exponential terms, however, if there are too many exponentials then exact scaling solutions do not exist. In this paper we study the potentials arising from such compactifications of eleven dimensional supergravity and analyse the regions of parameter space which could lead to scaling behaviour. |
| first_indexed | 2025-11-14T19:47:43Z |
| format | Article |
| id | nottingham-42111 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:47:43Z |
| publishDate | 2006 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-421112020-05-04T16:26:24Z https://eprints.nottingham.ac.uk/42111/ The Dynamics of coset dimensional reduction Karthauser, Josef L.P. Saffin, Paul M. The evolution of multiple scalar fields in cosmology has been much studied, particularly when the potential is formed from a series of exponentials. For a certain subclass of such systems it is possible to get `assisted` behaviour, where the presence of multiple terms in the potential effectively makes it shallower than the individual terms indicate. It is also known that when compactifying on coset spaces one can achieve a consistent truncation to an effective theory which contains many exponential terms, however, if there are too many exponentials then exact scaling solutions do not exist. In this paper we study the potentials arising from such compactifications of eleven dimensional supergravity and analyse the regions of parameter space which could lead to scaling behaviour. American Physical Society 2006-04-28 Article PeerReviewed Karthauser, Josef L.P. and Saffin, Paul M. (2006) The Dynamics of coset dimensional reduction. Physical Review D, 73 (8). 084027. ISSN 2470-0029 https://journals.aps.org/prd/abstract/10.1103/PhysRevD.73.084027 doi:10.1103/PhysRevD.73.084027 doi:10.1103/PhysRevD.73.084027 |
| spellingShingle | Karthauser, Josef L.P. Saffin, Paul M. The Dynamics of coset dimensional reduction |
| title | The Dynamics of coset dimensional reduction |
| title_full | The Dynamics of coset dimensional reduction |
| title_fullStr | The Dynamics of coset dimensional reduction |
| title_full_unstemmed | The Dynamics of coset dimensional reduction |
| title_short | The Dynamics of coset dimensional reduction |
| title_sort | dynamics of coset dimensional reduction |
| url | https://eprints.nottingham.ac.uk/42111/ https://eprints.nottingham.ac.uk/42111/ https://eprints.nottingham.ac.uk/42111/ |