Parametrized post-Friedmannian framework for interacting dark energy theories
Skordis, C.; Pourtsidou, A.; Copeland, Edmund J.
EDMUND COPELAND Ed.Copeland@nottingham.ac.uk
Professor of Physics
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.
|Journal Article Type||Article|
|Publication Date||Apr 15, 2015|
|Journal||Physical Review D|
|Publisher||American Physical Society|
|Peer Reviewed||Peer Reviewed|
|APA6 Citation||Skordis, C., Pourtsidou, A., & Copeland, E. J. (2015). Parametrized post-Friedmannian framework for interacting dark energy theories. Physical Review D, 91(8), https://doi.org/10.1103/PhysRevD.91.083537|
|Copyright Statement||Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf|
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf
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