van de Bruck, C., Mifsud, J., Mimoso, J.P. et al. (1 more author) (2016) Generalized dark energy interactions with multiple fluids. Journal of Cosmology and Astroparticle Physics, 2016 (11). 031.
Abstract
In the search for an explanation for the current acceleration of the Universe, scalar fields are the most simple and useful tools to build models of dark energy. This field, however, must in principle couple with the rest of the world and not necessarily in the same way to different particles or fluids. We provide the most complete dynamical system analysis to date, consisting of a canonical scalar field conformally and disformally coupled to both dust and radiation. We perform a detailed study of the existence and stability conditions of the systems and comment on constraints imposed on the disformal coupling from Big-Bang Nucleosynthesis and given current limits on the variation of the fine-structure constant.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 IOP Publishing Ltd and Sissa Medialab srl. |
Keywords: | dark energy theory; gravity; modified gravity |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > School of Mathematics and Statistics (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 19 Oct 2017 10:08 |
Last Modified: | 19 Oct 2017 10:08 |
Published Version: | https://doi.org/10.1088/1475-7516/2016/11/031 |
Status: | Published |
Publisher: | IOP Publishing |
Refereed: | Yes |
Identification Number: | 10.1088/1475-7516/2016/11/031 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:113734 |