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Parametrized post-Friedmannian framework for interacting dark energy theories

Skordis, C.; Pourtsidou, A.; Copeland, Edmund J.


C. Skordis

A. Pourtsidou


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.


Skordis, C., Pourtsidou, A., & Copeland, E. J. (2015). Parametrized post-Friedmannian framework for interacting dark energy theories. Physical Review D, 91(8), Article 083537.

Journal Article Type Article
Acceptance Date Mar 13, 2015
Online Publication Date Apr 24, 2015
Publication Date Apr 15, 2015
Deposit Date Apr 26, 2017
Publicly Available Date Apr 26, 2017
Journal Physical Review D
Print ISSN 2470-0010
Electronic ISSN 1550-2368
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 91
Issue 8
Article Number 083537
Public URL
Publisher URL


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