Parametrized post-Friedmannian framework for interacting dark energy theories
Date
2015ISSN
1550-7998Source
Physical Review D - Particles, Fields, Gravitation and CosmologyVolume
91Issue
8Google Scholar check
Metadata
Show full item recordAbstract
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. © 2015 American Physical Society.