A unifying description of dark energy

  title={A unifying description of dark energy},
  author={J'erome Gleyzes and David Langlois and Filippo Vernizzi},
  journal={arXiv: High Energy Physics - Theory},
We review and extend a novel approach that we introduced recently, to describe general dark energy or scalar-tensor models. Our approach relies on an ADM formulation based on the hypersurfaces where the underlying scalar field is uniform. The advantage of this approach is that it can describe in the same language and in a minimal way a vast number of existing models, such as quintessence models, $F(R)$ theories, scalar tensor theories, their Horndeski extensions and beyond. It also naturally… 

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