Parametrized post-Friedmannian framework for interacting dark energy theories
We present the most general parametrization of models of dark energy in the form of a scalar field which is explicitly coupled to dark matter. We follow and extend the parametrized post-Friedmannian approach, previously applied to modified gravity theories, in order to include interacting dark energ...
| Main Authors: | , , |
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| Format: | Article |
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American Physical Society
2015
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| Online Access: | https://eprints.nottingham.ac.uk/42223/ |
| _version_ | 1848796447782207488 |
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| author | Skordis, C. Pourtsidou, A. Copeland, Edmund J. |
| author_facet | Skordis, C. Pourtsidou, A. Copeland, Edmund J. |
| author_sort | Skordis, C. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | We present the most general parametrization of models of dark energy in the form of a scalar field which is explicitly coupled to dark matter. We follow and extend the parametrized post-Friedmannian approach, previously applied to modified gravity theories, in order to include interacting dark energy. We demonstrate its use through a number of worked examples and show how the initially large parameter space of free functions can be significantly reduced and constrained to include only a few nonzero coefficients. This paves the way for a model-independent approach to classify and test interacting dark energy theories. |
| first_indexed | 2025-11-14T19:48:08Z |
| format | Article |
| id | nottingham-42223 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:48:08Z |
| publishDate | 2015 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-422232020-05-04T17:05:59Z https://eprints.nottingham.ac.uk/42223/ Parametrized post-Friedmannian framework for interacting dark energy theories Skordis, C. Pourtsidou, A. Copeland, Edmund J. We present the most general parametrization of models of dark energy in the form of a scalar field which is explicitly coupled to dark matter. We follow and extend the parametrized post-Friedmannian approach, previously applied to modified gravity theories, in order to include interacting dark energy. We demonstrate its use through a number of worked examples and show how the initially large parameter space of free functions can be significantly reduced and constrained to include only a few nonzero coefficients. This paves the way for a model-independent approach to classify and test interacting dark energy theories. American Physical Society 2015-04-24 Article PeerReviewed Skordis, C., Pourtsidou, A. and Copeland, Edmund J. (2015) Parametrized post-Friedmannian framework for interacting dark energy theories. Physical Review D, 91 (8). 083537-1-083537-11. ISSN 2470-0029 https://journals.aps.org/prd/abstract/10.1103/PhysRevD.91.083537 doi:10.1103/PhysRevD.91.083537 doi:10.1103/PhysRevD.91.083537 |
| spellingShingle | Skordis, C. Pourtsidou, A. Copeland, Edmund J. Parametrized post-Friedmannian framework for interacting dark energy theories |
| title | Parametrized post-Friedmannian framework for interacting dark energy theories |
| title_full | Parametrized post-Friedmannian framework for interacting dark energy theories |
| title_fullStr | Parametrized post-Friedmannian framework for interacting dark energy theories |
| title_full_unstemmed | Parametrized post-Friedmannian framework for interacting dark energy theories |
| title_short | Parametrized post-Friedmannian framework for interacting dark energy theories |
| title_sort | parametrized post-friedmannian framework for interacting dark energy theories |
| url | https://eprints.nottingham.ac.uk/42223/ https://eprints.nottingham.ac.uk/42223/ https://eprints.nottingham.ac.uk/42223/ |