The covariance of multi-field perturbations, pseudo-susy and fNL
We reconsider cosmological perturbation theory for multi-component scalars, enforcing covariance in field-space, and ensuring that phyical observations are independent of field re-definitions. We use the formalism to clarify some issues in the literature, and use pseudo-supersymmetry to derive exact...
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| Format: | Article |
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IOP Publishing
2012
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| Online Access: | https://eprints.nottingham.ac.uk/42143/ |
| _version_ | 1848796430315028480 |
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| author | Saffin, Paul M. |
| author_facet | Saffin, Paul M. |
| author_sort | Saffin, Paul M. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | We reconsider cosmological perturbation theory for multi-component scalars, enforcing covariance in field-space, and ensuring that phyical observations are independent of field re-definitions. We use the formalism to clarify some issues in the literature, and use pseudo-supersymmetry to derive exact expressions for terms of interest. |
| first_indexed | 2025-11-14T19:47:51Z |
| format | Article |
| id | nottingham-42143 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:47:51Z |
| publishDate | 2012 |
| publisher | IOP Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-421432020-05-04T16:34:10Z https://eprints.nottingham.ac.uk/42143/ The covariance of multi-field perturbations, pseudo-susy and fNL Saffin, Paul M. We reconsider cosmological perturbation theory for multi-component scalars, enforcing covariance in field-space, and ensuring that phyical observations are independent of field re-definitions. We use the formalism to clarify some issues in the literature, and use pseudo-supersymmetry to derive exact expressions for terms of interest. IOP Publishing 2012-09-04 Article PeerReviewed Saffin, Paul M. (2012) The covariance of multi-field perturbations, pseudo-susy and fNL. Journal of Cosmology and Astroparticle Physics, 2012 (09). 002/1-002/22. ISSN 1475-7516 Cosmological perturbation theory https://doi.org/10.1088/1475-7516/2012/09/002 doi:10.1088/1475-7516/2012/09/002 doi:10.1088/1475-7516/2012/09/002 |
| spellingShingle | Cosmological perturbation theory Saffin, Paul M. The covariance of multi-field perturbations, pseudo-susy and fNL |
| title | The covariance of multi-field perturbations, pseudo-susy and fNL |
| title_full | The covariance of multi-field perturbations, pseudo-susy and fNL |
| title_fullStr | The covariance of multi-field perturbations, pseudo-susy and fNL |
| title_full_unstemmed | The covariance of multi-field perturbations, pseudo-susy and fNL |
| title_short | The covariance of multi-field perturbations, pseudo-susy and fNL |
| title_sort | covariance of multi-field perturbations, pseudo-susy and fnl |
| topic | Cosmological perturbation theory |
| url | https://eprints.nottingham.ac.uk/42143/ https://eprints.nottingham.ac.uk/42143/ https://eprints.nottingham.ac.uk/42143/ |